1
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Lu Y, Liu D, Wei X, Song J, Xiao Q, Du K, Shi X, Gao H. Synthesis and Thermoreversible Gelation of Coil-Rod Copolymers with a Dendritic Polyethylene Core and Multiple Helical Poly(γ-benzyl-L-glutamate) Arms. Polymers (Basel) 2023; 15:4351. [PMID: 38006076 PMCID: PMC10675438 DOI: 10.3390/polym15224351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/02/2023] [Accepted: 11/03/2023] [Indexed: 11/26/2023] Open
Abstract
Coil-rod copolymers with a dendritic polyethylene (DPE) core and multiple helical poly(γ-benzyl-L-glutamate) (PBLG) arms (DPE-(PBLG)n) were prepared by palladium-catalyzed copolymerization in tandem with ring-opening polymerization (ROP). Macroinitiator (DPE-(NH2)11) was firstly prepared by the group transformation of DPE-(OH)11 generated from palladium-catalyzed copolymerization of ethylene and acrylate comonomer. Coil-helical DPE-(PBLG)11 copolymers were prepared by ROP of γ-benzyl-L-glutamate-N-carboxyanhydride (BLG-NCA). These DPE-(PBLG)11 copolymers could form thermoreversible gels in toluene solvent, and the dendritic topology of the DPE core increased the critical gelation concentrations. The self-assembled nanostructure of gels was fully characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), small-angle X-ray scattering (SAXS), and wide-angle X-ray diffraction (WAXD), and the morphology of the fibrous structure was a twisted flat ribbon through a self-assembled nanoribbon mechanism. The self-assembled fibers formed by DPE-(PBLG45)11 are more heterogeneous and ramified than previously observed fibers formed by PBLG homopolymer and block copolymers.
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Affiliation(s)
- Yuliang Lu
- China National Offshore Oil Corporation Energy Technology & Services Limited Shenzhen Branch, Shenzhen 518067, China; (Y.L.); (D.L.); (X.W.); (J.S.); (Q.X.); (K.D.)
| | - Dongtao Liu
- China National Offshore Oil Corporation Energy Technology & Services Limited Shenzhen Branch, Shenzhen 518067, China; (Y.L.); (D.L.); (X.W.); (J.S.); (Q.X.); (K.D.)
| | - Xinjie Wei
- China National Offshore Oil Corporation Energy Technology & Services Limited Shenzhen Branch, Shenzhen 518067, China; (Y.L.); (D.L.); (X.W.); (J.S.); (Q.X.); (K.D.)
| | - Jiming Song
- China National Offshore Oil Corporation Energy Technology & Services Limited Shenzhen Branch, Shenzhen 518067, China; (Y.L.); (D.L.); (X.W.); (J.S.); (Q.X.); (K.D.)
| | - Qiaogang Xiao
- China National Offshore Oil Corporation Energy Technology & Services Limited Shenzhen Branch, Shenzhen 518067, China; (Y.L.); (D.L.); (X.W.); (J.S.); (Q.X.); (K.D.)
| | - Kezheng Du
- China National Offshore Oil Corporation Energy Technology & Services Limited Shenzhen Branch, Shenzhen 518067, China; (Y.L.); (D.L.); (X.W.); (J.S.); (Q.X.); (K.D.)
| | - Xinbo Shi
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-Sen University, Guangzhou 510275, China;
- Chain Walking New Material Technology (Guangzhou) Co., Ltd., Guangzhou 511457, China
| | - Haiyang Gao
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-Sen University, Guangzhou 510275, China;
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2
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Pei L, Ma H, Jiang Y, Zheng H, Gao H. Amphiphilic Polyethylene-b-poly(L-lysine) Block Copolymer: Synthesis, Self-Assembly, and Responsivity. Int J Mol Sci 2023; 24:ijms24065495. [PMID: 36982576 PMCID: PMC10052655 DOI: 10.3390/ijms24065495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/07/2023] [Accepted: 03/09/2023] [Indexed: 03/16/2023] Open
Abstract
Polyethylene-b-polypeptide copolymers are biologically interesting, but studies of their synthesis and properties are very few. This paper reports synthesis and characterization of well-defined amphiphilic polyethylene-block-poly(L-lysine) (PE-b-PLL) block copolymers by combining nickel-catalyzed living ethylene polymerization with controlled ring-opening polymerization (ROP) of ε-benzyloxycarbonyl-L-lysine-N-carboxyanhydride (Z-Lys-NCA) and sequential post-functionalization. Amphiphilic PE-b-PLL block copolymers self-assembled into spherical micelles with a hydrophobic PE core in aqueous solution. The pH and ionic responsivities of PE-b-PLL polymeric micelles were investigated by means of fluorescence spectroscopy, dynamic light scattering, UV-circular dichroism, and transmission electron microscopy. The variation of pH values led to the conformational alteration of PLL from α-helix to coil, thereby changing the micelle dimensions.
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Affiliation(s)
- Lixia Pei
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China
| | - Hongyu Ma
- Daqing Chemical Engineering Research Center, Petrochemical Research Institute, Daqing 163714, China
| | - Yan Jiang
- Daqing Chemical Engineering Research Center, Petrochemical Research Institute, Daqing 163714, China
| | - Handou Zheng
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
| | - Haiyang Gao
- School of Materials Science and Engineering, PCFM Lab, GD HPPC Lab, Sun Yat-sen University, Guangzhou 510275, China
- Correspondence:
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3
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Myosin assembly of smooth muscle: from ribbons and side polarity to a row polar helical model. J Muscle Res Cell Motil 2022; 43:113-133. [PMID: 35841444 PMCID: PMC9420085 DOI: 10.1007/s10974-022-09622-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 06/04/2022] [Indexed: 10/31/2022]
Abstract
After decades of debate over the structure of smooth muscle myosin filaments, it is still unclear whether they are helical, as in all other muscle types, or square in shape. In both cases bipolar building units are proposed, but the deduced cross-bridge arrangements are fundamentally different. The opposite polarity of the adjusting longitudinal rows is proposed for the helical structure, while in the case of square filaments, or myosin ribbons, only their two faces are appositively polarized. Analysis of our unpublished archival data on light meromyosin (LMM) paracrystals and myosin rod assemblies as well as the filaments themselves indicated that the rods were assembled with a 6°-7° tilt angle from the rods' longitudinal axis, in contrast to the lack of tilt in LMM, both exhibiting a 14.3 nm myosin periodicity. Optical diffraction analysis of EM images of the rod assemblies and those of intact myosin confirmed their helical architecture characterized by 28 nm residue translations, 172 nm repeats and 516 nm pitch. A detailed helical model of these filaments was elucidated with bipolar tetramer building units made of two polar trimers. The filaments elongate at their two ends in a head-to-head manner, enabling targeted cross-bridge polarity of the adjacent rows, in the form of a unique Boerdijk-Coxeter type helix, similar to that of collagen or desmin fibers, with the covalent links replaced by a head-to-head clasp.
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4
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Saleem S, Muhammad G, Iqbal MM, Hussain MA, Raza MA, Shafiq Z, Razzaq H. Polysaccharide‐Based Liquid Crystals. POLYSACCHARIDES 2021. [DOI: 10.1002/9781119711414.ch27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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5
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Jones AOF, Resel R, Schrode B, Machado-Charry E, Röthel C, Kunert B, Salzmann I, Kontturi E, Reishofer D, Spirk S. Structural Order in Cellulose Thin Films Prepared from a Trimethylsilyl Precursor. Biomacromolecules 2019; 21:653-659. [PMID: 31774663 DOI: 10.1021/acs.biomac.9b01377] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Biopolymer cellulose is investigated in terms of the crystallographic order within thin films. The films were prepared by spin-coating of a trimethylsilyl cellulose precursor followed by an exposure to HCl vapors; two different source materials were used. Careful precharacterization of the films was performed by infrared spectroscopy and atomic force microscopy. Subsequently, the films were investigated by grazing incidence X-ray diffraction using synchrotron radiation. The results showed broad diffraction peaks, indicating a rather short correlation length of the molecular packing in the range of a few nanometers. The analysis of the diffraction patterns was based on the known structures of crystalline cellulose, as the observed peak pattern was comparable to cellulose phase II and phase III. The dominant fraction of the film is formed by two different types of layers, which are oriented parallel to the substrate surface. The stacking of the layers results in a one-dimensional crystallographic order with a defined interlayer distance of either 7.3 or 4.2 Å. As a consequence, two different preferred orientations of the polymer chains are observed. In both cases, polymer chain axes are aligned parallel to the substrate surface, and the orientation of the cellulose molecules are concluded to be either edge-on or flat-on. A minor fraction of the cellulose molecules form nanocrystals that are randomly distributed within the films. In this case, the molecular packing density was found to be smaller in comparison to the known crystalline phases of cellulose.
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Affiliation(s)
- Andrew O F Jones
- Institute of Solid State Physics , Graz University of Technology , Petersgasse 16 , 8010 Graz , Austria
| | - Roland Resel
- Institute of Solid State Physics , Graz University of Technology , Petersgasse 16 , 8010 Graz , Austria
| | - Benedikt Schrode
- Institute of Solid State Physics , Graz University of Technology , Petersgasse 16 , 8010 Graz , Austria
| | - Eduardo Machado-Charry
- Institute of Solid State Physics , Graz University of Technology , Petersgasse 16 , 8010 Graz , Austria
| | - Christian Röthel
- Institute of Solid State Physics , Graz University of Technology , Petersgasse 16 , 8010 Graz , Austria.,Institute for Pharmaceutical Sciences, Department of Pharmaceutical Technology , Karl-Franzens University of Graz , 8010 Graz , Austria
| | - Birgit Kunert
- Institute of Solid State Physics , Graz University of Technology , Petersgasse 16 , 8010 Graz , Austria
| | - Ingo Salzmann
- Department of Physics, Department of Chemistry and Biochemistry , Concordia University , H4B 1R6 Montréal , Canada
| | - Eero Kontturi
- Department of Bioproducts and Biosystems , Aalto University , P.O. Box 16300, 00076 Aalto , Finland
| | - David Reishofer
- Institute of Paper, Pulp and Fiber Technology , Graz University of Technology , 8010 Graz , Austria
| | - Stefan Spirk
- Institute of Paper, Pulp and Fiber Technology , Graz University of Technology , 8010 Graz , Austria
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6
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Alam MM, Jack KS, Hill DJ, Whittaker AK, Peng H. Gradient copolymers – Preparation, properties and practice. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.04.028] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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7
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Hasegawa H, Terao K, Sato T, Nagata Y, Suginome M. Lyotropic Liquid Crystallinity of Linear and Star Poly(quinoxaline-2,3-diyl)s: Isotropic-Liquid Crystal Phase Equilibria in Tetrahydrofuran. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hirokazu Hasegawa
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Materials Characterization Laboratories, Toray Research Center, Inc., 3-3-7, Sonoyama, Otsu, Shiga 520-8567, Japan
| | - Ken Terao
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Takahiro Sato
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Yuuya Nagata
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Michinori Suginome
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan
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8
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Gangloff N, Höferth M, Stepanenko V, Sochor B, Schummer B, Nickel J, Walles H, Hanke R, Würthner F, Zuckermann RN, Luxenhofer R. Linking two worlds in polymer chemistry: The influence of block uniformity and dispersity in amphiphilic block copolypeptoids on their self‐assembly. Biopolymers 2019; 110:e23259. [DOI: 10.1002/bip.23259] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/21/2018] [Accepted: 01/03/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Niklas Gangloff
- Lehrstuhl für Chemische Technologie der Materialsynthese Universität Würzburg Würzburg Germany
| | - Marcel Höferth
- Lehrstuhl für Chemische Technologie der Materialsynthese Universität Würzburg Würzburg Germany
| | - Vladimir Stepanenko
- Institut für Organische Chemie & Center for Nanosystems Chemistry (CNC) Universität Würzburg Würzburg Germany
- Bavarian Polymer Institute (BPI) Universität Würzburg Würzburg Germany
| | - Benedikt Sochor
- Lehrstuhl für Röntgenmikroskopie Universität Würzburg Würzburg Germany
| | - Bernhard Schummer
- Lehrstuhl für Röntgenmikroskopie Universität Würzburg Würzburg Germany
| | - Joachim Nickel
- Lehrstuhl für Tissue Engineering und Regenerative Medizin Universitätsklinikum Würzburg Würzburg Germany
| | - Heike Walles
- Lehrstuhl für Tissue Engineering und Regenerative Medizin Universitätsklinikum Würzburg Würzburg Germany
| | - Randolf Hanke
- Lehrstuhl für Röntgenmikroskopie Universität Würzburg Würzburg Germany
| | - Frank Würthner
- Institut für Organische Chemie & Center for Nanosystems Chemistry (CNC) Universität Würzburg Würzburg Germany
- Bavarian Polymer Institute (BPI) Universität Würzburg Würzburg Germany
| | - Ronald N. Zuckermann
- Molecular Foundry, Biological Nanostructures, Lawrence Berkeley National Laboratory United States of America
| | - Robert Luxenhofer
- Lehrstuhl für Chemische Technologie der Materialsynthese Universität Würzburg Würzburg Germany
- Bavarian Polymer Institute (BPI) Universität Würzburg Würzburg Germany
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9
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Liu S, Zheng C, Ye Z, Blanc B, Zhi X, Shi L, Zhang Z. Filamentous Viruses Grafted with Thermoresponsive Block Polymers: Liquid Crystal Behaviors of a Rodlike Colloidal Model with “True” Attractive Interactions. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00674] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Shuaiyu Liu
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071 Tianjin, China
| | - Chunxiong Zheng
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071 Tianjin, China
| | - Zihan Ye
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071 Tianjin, China
| | - Baptiste Blanc
- Department of Physics, Brandeis University, Waltham, Massachusetts 02453, United States
| | - Xueli Zhi
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071 Tianjin, China
| | - Linqi Shi
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071 Tianjin, China
| | - Zhenkun Zhang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, 300071 Tianjin, China
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10
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Lin Y, An B, Bagheri M, Wang Q, Harden JL, Kaplan DL. Electrochemically Directed Assembly of Designer Coiled-Coil Telechelic Proteins. ACS Biomater Sci Eng 2017; 3:3195-3206. [PMID: 33445361 DOI: 10.1021/acsbiomaterials.7b00599] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report the design and characterization of a de novo electrogelation protein comprising a central spider silk glue motif flanked by terminal pH-triggered coiled-coil domains. The coiled-coiled domains were designed to form intramolecular helix bundles below a sharply defined pH-trigger point (∼pH 5.3), whereas the spider silk glue protein, because of its substantial Glu content, serves both as an anionic electrophoretic transport element at neutral and elevated pH and as a disordered linker chain between the associated helix bundles at reduced pH. We show that in an electrochemical cell, a solution of these telechelic proteins migrates toward the anode where the terminal coiled-coil domains are triggered to form coiled-coil assemblies that act as transient cross-links for the e-gel state. Upon cessation of the current, the coiled-coil domains become denatured and the e-gel transforms back into a fluid solution of polypeptides in a fully reversible manner. This simplified triblock protein design mimics many of the characteristics of more complex electrogelation proteins, such as silk fibroin. As such, it provides some insight into possible general mechanisms of protein electrogelation. Moreover, this general class of electrogelation proteins has the potential for biomedical applications of electrochemically triggered gelation, such as externally switchable delivery of therapeutic cell and drugs from a responsive matrix.
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Affiliation(s)
- Yinan Lin
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Bo An
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Mehran Bagheri
- Department of Physics, University of Ottawa, Ontario K1N 6N5, Canada
| | - Qianrui Wang
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - James L Harden
- Department of Physics, University of Ottawa, Ontario K1N 6N5, Canada
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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11
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Barkley DA, Rokhlenko Y, Marine JE, David R, Sahoo D, Watson MD, Koga T, Osuji CO, Rudick JG. Hexagonally Ordered Arrays of α-Helical Bundles Formed from Peptide-Dendron Hybrids. J Am Chem Soc 2017; 139:15977-15983. [PMID: 29043793 DOI: 10.1021/jacs.7b09737] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Combining monodisperse building blocks that have distinct folding properties serves as a modular strategy for controlling structural complexity in hierarchically organized materials. We combine an α-helical bundle-forming peptide with self-assembling dendrons to better control the arrangement of functional groups within cylindrical nanostructures. Site-specific grafting of dendrons to amino acid residues on the exterior of the α-helical bundle yields monodisperse macromolecules with programmable folding and self-assembly properties. The resulting hybrid biomaterials form thermotropic columnar hexagonal mesophases in which the peptides adopt an α-helical conformation. Bundling of the α-helical peptides accompanies self-assembly of the peptide-dendron hybrids into cylindrical nanostructures. The bundle stoichiometry in the mesophase agrees well with the size found in solution for α-helical bundles of peptides with a similar amino acid sequence.
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Affiliation(s)
- Deborah A Barkley
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Yekaterina Rokhlenko
- Department of Chemical and Environmental Engineering, Yale University , New Haven, Connecticut 06511, United States
| | - Jeannette E Marine
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Rachelle David
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Dipankar Sahoo
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Matthew D Watson
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
| | - Tadanori Koga
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States.,Department of Materials Science and Engineering, Stony Brook University , Stony Brook, New York 11794, United States
| | - Chinedum O Osuji
- Department of Chemical and Environmental Engineering, Yale University , New Haven, Connecticut 06511, United States
| | - Jonathan G Rudick
- Department of Chemistry, Stony Brook University , Stony Brook, New York 11794, United States
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12
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Lei WW, Shi LY, Li H, Li CX, Diao YF, Zhang YL, Ran R. A novel self-assembled hybrid organogel of polypeptide-based block copolymers with inclusion of polypeptide-functionalized graphene. RSC Adv 2017. [DOI: 10.1039/c6ra24677j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Self-assembled hybrid organogels of polypeptide-based BCPs with incorporation of functionalized graphene were generated, and showed enhanced mechanical performance for the potential nanomaterials application.
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Affiliation(s)
- Wei-Wei Lei
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Ling-Ying Shi
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Hang Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Chen-Xi Li
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yong-Fu Diao
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yu-Lin Zhang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Rong Ran
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
- Chengdu 610065
- China
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13
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Magnotti EL, Hughes SA, Dillard RS, Wang S, Hough L, Karumbamkandathil A, Lian T, Wall JS, Zuo X, Wright ER, Conticello VP. Self-Assembly of an α-Helical Peptide into a Crystalline Two-Dimensional Nanoporous Framework. J Am Chem Soc 2016; 138:16274-16282. [PMID: 27936625 PMCID: PMC5739522 DOI: 10.1021/jacs.6b06592] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Sequence-specific peptides have been demonstrated to self-assemble into structurally defined nanoscale objects including nanofibers, nanotubes, and nanosheets. The latter structures display significant promise for the construction of hybrid materials for functional devices due to their extended planar geometry. Realization of this objective necessitates the ability to control the structural features of the resultant assemblies through the peptide sequence. The design of a amphiphilic peptide, 3FD-IL, is described that comprises two repeats of a canonical 18 amino acid sequence associated with straight α-helical structures. Peptide 3FD-IL displays 3-fold screw symmetry in a helical conformation and self-assembles into nanosheets based on hexagonal packing of helices. Biophysical evidence from TEM, cryo-TEM, SAXS, AFM, and STEM measurements on the 3FD-IL nanosheets support a structural model based on a honeycomb lattice, in which the length of the peptide determines the thickness of the nanosheet and the packing of helices defines the presence of nanoscale channels that permeate the sheet. The honeycomb structure can be rationalized on the basis of geometrical packing frustration in which the channels occupy defect sites that define a periodic superlattice. The resultant 2D materials may have potential as materials for nanoscale transport and controlled release applications.
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Affiliation(s)
| | - Spencer A. Hughes
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Rebecca S. Dillard
- Department of Pediatrics, Emory University School of Medicine, Children’s Healthcare of Atlanta, Atlanta, Georgia 30322, United States
| | - Shengyuan Wang
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Lillian Hough
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | | | - Tianquan Lian
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Joseph S. Wall
- Brookhaven National Laboratory, P.O. Box 5000, Upton, New York 11973, United States
| | - Xiaobing Zuo
- X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Elizabeth R. Wright
- Department of Pediatrics, Emory University School of Medicine, Children’s Healthcare of Atlanta, Atlanta, Georgia 30322, United States
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14
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Lahtinen T, Haataja JS, Tero TR, Häkkinen H, Ikkala O. Template-Free Supracolloidal Self-Assembly of Atomically Precise Gold Nanoclusters: From 2D Colloidal Crystals to Spherical Capsids. Angew Chem Int Ed Engl 2016; 55:16035-16038. [PMID: 27879034 DOI: 10.1002/anie.201609036] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 10/15/2016] [Indexed: 01/03/2023]
Abstract
We report supracolloidal self-assembly of atomically precise and strictly monodisperse gold nanoclusters involving p-mercaptobenzoic acid ligands (Au102 -pMBA44 ) under aqueous conditions into hexagonally packed monolayer-thick two-dimensional facetted colloidal crystals (thickness 2.7 nm) and their bending to closed shells leading to spherical capsids (d ca. 200 nm), as controlled by solvent conditions. The 2D colloidal assembly is driven in template-free manner by the spontaneous patchiness of the pMBA ligands around the Au102 -pMBA44 nanoclusters preferably towards equatorial plane, thus promoting inter-nanocluster hydrogen bonds and high packing to planar sheets. More generally, the findings encourage to explore atomically precise nanoclusters towards highly controlled colloidal self-assemblies.
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Affiliation(s)
- Tanja Lahtinen
- Departments of Chemistry and Physics, Nanoscience centre, University of Jyväskylä, Survontie 9, 40014, Jyväskylä, Finland
| | - Johannes S Haataja
- Department of Applied Physics, Molecular Materials Group, Aalto University School of Science, Puumiehenkuja 2, Espoo, 02150, Finland
| | - Tiia-Riikka Tero
- Departments of Chemistry and Physics, Nanoscience centre, University of Jyväskylä, Survontie 9, 40014, Jyväskylä, Finland
| | - Hannu Häkkinen
- Departments of Chemistry and Physics, Nanoscience centre, University of Jyväskylä, Survontie 9, 40014, Jyväskylä, Finland
| | - Olli Ikkala
- Department of Applied Physics, Molecular Materials Group, Aalto University School of Science, Puumiehenkuja 2, Espoo, 02150, Finland
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15
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Nonappa, Lahtinen T, Haataja JS, Tero TR, Häkkinen H, Ikkala O. Template-Free Supracolloidal Self-Assembly of Atomically Precise Gold Nanoclusters: From 2D Colloidal Crystals to Spherical Capsids. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609036] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Nonappa
- Department of Applied Physics, Molecular Materials Group; Aalto University School of Science; Puumiehenkuja 2 Espoo 02150 Finland
| | - Tanja Lahtinen
- Departments of Chemistry and Physics, Nanoscience centre; University of Jyväskylä; Survontie 9 40014 Jyväskylä Finland
| | - Johannes. S. Haataja
- Department of Applied Physics, Molecular Materials Group; Aalto University School of Science; Puumiehenkuja 2 Espoo 02150 Finland
| | - Tiia-Riikka Tero
- Departments of Chemistry and Physics, Nanoscience centre; University of Jyväskylä; Survontie 9 40014 Jyväskylä Finland
| | - Hannu Häkkinen
- Departments of Chemistry and Physics, Nanoscience centre; University of Jyväskylä; Survontie 9 40014 Jyväskylä Finland
| | - Olli Ikkala
- Department of Applied Physics, Molecular Materials Group; Aalto University School of Science; Puumiehenkuja 2 Espoo 02150 Finland
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16
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Zhang HV, Polzer F, Haider MJ, Tian Y, Villegas JA, Kiick KL, Pochan DJ, Saven JG. Computationally designed peptides for self-assembly of nanostructured lattices. SCIENCE ADVANCES 2016; 2:e1600307. [PMID: 27626071 PMCID: PMC5017825 DOI: 10.1126/sciadv.1600307] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 08/09/2016] [Indexed: 05/21/2023]
Abstract
Folded peptides present complex exterior surfaces specified by their amino acid sequences, and the control of these surfaces offers high-precision routes to self-assembling materials. The complexity of peptide structure and the subtlety of noncovalent interactions make the design of predetermined nanostructures difficult. Computational methods can facilitate this design and are used here to determine 29-residue peptides that form tetrahelical bundles that, in turn, serve as building blocks for lattice-forming materials. Four distinct assemblies were engineered. Peptide bundle exterior amino acids were designed in the context of three different interbundle lattices in addition to one design to produce bundles isolated in solution. Solution assembly produced three different types of lattice-forming materials that exhibited varying degrees of agreement with the chosen lattices used in the design of each sequence. Transmission electron microscopy revealed the nanostructure of the sheetlike nanomaterials. In contrast, the peptide sequence designed to form isolated, soluble, tetrameric bundles remained dispersed and did not form any higher-order assembled nanostructure. Small-angle neutron scattering confirmed the formation of soluble bundles with the designed size. In the lattice-forming nanostructures, the solution assembly process is robust with respect to variation of solution conditions (pH and temperature) and covalent modification of the computationally designed peptides. Solution conditions can be used to control micrometer-scale morphology of the assemblies. The findings illustrate that, with careful control of molecular structure and solution conditions, a single peptide motif can be versatile enough to yield a wide range of self-assembled lattice morphologies across many length scales (1 to 1000 nm).
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Affiliation(s)
- Huixi Violet Zhang
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Frank Polzer
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Michael J. Haider
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Yu Tian
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Jose A. Villegas
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kristi L. Kiick
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
- Corresponding author. (D.J.P.); (K.L.K.); (J.G.S.)
| | - Darrin J. Pochan
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
- Corresponding author. (D.J.P.); (K.L.K.); (J.G.S.)
| | - Jeffery G. Saven
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104, USA
- Corresponding author. (D.J.P.); (K.L.K.); (J.G.S.)
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17
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Chen Y, Zhao Z, Bian Z, Jin R, Kang C, Qiu X, Guo H, Du Z, Gao L. Hexagonal Lyotropic Liquid Crystal from Simple "Abiotic" Foldamers. ChemistryOpen 2016; 5:386-94. [PMID: 27547649 PMCID: PMC4981060 DOI: 10.1002/open.201600007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Indexed: 12/04/2022] Open
Abstract
The motivation of foldamer chemistry is to identify novel building blocks that have the potential to imitate natural species. Peptides and peptide mimetics can form stable helical conformations and further self-assemble into diverse aggregates in water, where it is difficult to isolate a single helix. In contrast, most "abiotic" foldamers may fold into helical structures in solution, but are difficult to assemble into tertiary ones. It remains a challenge to obtain "abiotic" species similar to peptides. In this paper, a novel foldamer scaffold, in which p-phenyleneethynylene units are linked by chiral carbon atoms, was designed and prepared. In very dilute solutions, these oligomers were random coils. The hexamer and octamers could form a hexagonal lyotropic liquid crystal (LC) in CH2Cl2 when the concentrations reached the critical values. The microscopic observations indicated that they could assemble into the nanofibers in the LC. Interestingly, after some LC phases were diluted at room temperature, the nanofibers could be preserved. The good stabilities of the assemblies are possibly attributed to a more compact backbone and more rigid side chains.
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Affiliation(s)
- Yu Chen
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Zhiqiang Zhao
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
- University of Chinese Academy of SciencesBeijing100049P. R. China
| | - Zheng Bian
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
| | - Rizhe Jin
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
| | - Chuanqing Kang
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
| | - Xuepeng Qiu
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
| | - Haiquan Guo
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
| | - Zhijun Du
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
| | - Lianxun Gao
- State Key Laboratory of Polymer Physics and ChemistryChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P. R. China
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18
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Zhu M, Liu W, Xiao J, Ling Y, Tang H. Synthesis and UCST-type phase behaviors of OEGylated random copolypeptides in alcoholic solvents. ACTA ACUST UNITED AC 2016. [DOI: 10.1002/pola.28232] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Mengxiang Zhu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Wenjun Liu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Jiang Xiao
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Ying Ling
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
| | - Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry, Xiangtan University; Xiangtan Hunan 411105 China
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19
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Lin X, He X, Hu C, Chen Y, Mai Y, Lin S. Disk-like micelles with cylindrical pores from amphiphilic polypeptide block copolymers. Polym Chem 2016. [DOI: 10.1039/c6py00152a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An unprecedented 2-dimensional disk-like micelle with cylindrical pores was achieved by self-assembly of amphiphilic block copolypeptides PEG-b-PBLG with an α-helical conformation of PBLG blocks.
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Affiliation(s)
- Xue Lin
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Xiaohua He
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Chaoqun Hu
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Yuxiang Chen
- Department of Chemistry
- School of Chemistry and Molecular Engineering
- East China Normal University
- Shanghai 200241
- China
| | - Yiyong Mai
- School of Chemistry & Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Shaoliang Lin
- The Key Laboratory of Advanced Polymer Materials of Shanghai
- School of Materials Science and Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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20
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Tang M, Ding S, Min X, Jiao Y, Li L, Li H, Zhou C. Collagen films with stabilized liquid crystalline phases and concerns on osteoblast behaviors. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 58:977-85. [DOI: 10.1016/j.msec.2015.09.058] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 08/19/2015] [Accepted: 09/13/2015] [Indexed: 11/30/2022]
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21
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Zhu M, Xu Y, Ge C, Ling Y, Tang H. Synthesis and UCST-type phase behavior of OEGylated poly(γ-benzyl-l-glutamate) in organic media. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27982] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mengxiang Zhu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
| | - Yanzhi Xu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
| | - Chenglong Ge
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
| | - Ying Ling
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
| | - Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province, College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
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22
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Song Z, Kim H, Ba X, Baumgartner R, Lee JS, Tang H, Leal C, Cheng J. Polypeptide vesicles with densely packed multilayer membranes. SOFT MATTER 2015; 11:4091-4098. [PMID: 25939493 DOI: 10.1039/c5sm00820d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Multilamellar membranes are important building blocks for constructing self-assembled structures with improved barrier properties, such as multilamellar lipid vesicles. Polymeric vesicles (polymersomes) have attracted growing interest, but multilamellar polymersomes are much less explored. Here, we report the formation of polypeptide vesicles with unprecedented densely packed multilayer membrane structures with poly(ethylene glycol)-block-poly(γ-(4,5-dimethoxy-2-nitrobenzyl)-l-glutamate) (PEG-b-PL), an amphiphilic diblock rod-coil copolymer containing a short PEG block and a short hydrophobic rod-like polypeptide segment. The polypeptide rods undergo smectic ordering with PEG buried between the hydrophobic polypeptide layers. The size of both blocks and the rigidity of the hydrophobic polypeptide block are critical in determining the membrane structures. Increase of the PEG length in PEG-b-PL results in the formation of bilayer sheets, while using random-coil polypeptide block leads to the formation of large compound micelles. UV treatment causes ester bond cleavage of the polypeptide side chain, which induces helix-to-coil transition, change of copolymer amphiphilicity, and eventual disassembly of vesicles. These polypeptide vesicles with unique membrane structures provide a new insight into self-assembly structure control by precisely tuning the composition and conformation of polymeric amphiphiles.
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Affiliation(s)
- Ziyuan Song
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, 1304 West Green Street, Urbana, Illinois 61801, USA.
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23
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Hu Q, Yuan Q, Deng Y, Ling Y, Tang H. Synthesis and solid-state properties of thermotropic liquid crystalline polypeptide bearing imidazolium and p-tolyl groups. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2014.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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24
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Liu B, Cao Y, Huang Z, Duan Y, Che S. Silica biomineralization via the self-assembly of helical biomolecules. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:479-97. [PMID: 25339438 DOI: 10.1002/adma.201401485] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 07/06/2014] [Indexed: 05/27/2023]
Abstract
The biomimetic synthesis of relevant silica materials using biological macromolecules as templates via silica biomineralization processes attract rapidly rising attention toward natural and artificial materials. Biomimetic synthesis studies are useful for improving the understanding of the formation mechanism of the hierarchical structures found in living organisms (such as diatoms and sponges) and for promoting significant developments in the biotechnology, nanotechnology and materials chemistry fields. Chirality is a ubiquitous phenomenon in nature and is an inherent feature of biomolecular components in organisms. Helical biomolecules, one of the most important types of chiral macromolecules, can self-assemble into multiple liquid-crystal structures and be used as biotemplates for silica biomineralization, which renders them particularly useful for fabricating complex silica materials under ambient conditions. Over the past two decades, many new silica materials with hierarchical structures and complex morphologies have been created using helical biomolecules. In this review, the developments in this field are described and the recent progress in silica biomineralization templating using several classes of helical biomolecules, including DNA, polypeptides, cellulose and rod-like viruses is summarized. Particular focus is placed on the formation mechanism of biomolecule-silica materials (BSMs) with hierarchical structures. Finally, current research challenges and future developments are discussed in the conclusion.
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Affiliation(s)
- Ben Liu
- School of Chemistry and Chemical Technology, State Key Laboratory of Composite Materials, Shanghai Jiao Tong University, Shanghai, 200240, China
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25
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Abstract
Complexation of biomacromolecules (e.g., nucleic acids, proteins, or viruses) with surfactants containing flexible alkyl tails, followed by dehydration, is shown to be a simple generic method for the production of thermotropic liquid crystals. The anhydrous smectic phases that result exhibit biomacromolecular sublayers intercalated between aliphatic hydrocarbon sublayers at or near room temperature. Both this and low transition temperatures to other phases enable the study and application of thermotropic liquid crystal phase behavior without thermal degradation of the biomolecular components.
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26
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Yuan Q, Liu D, Deng Y, Ling Y, Tang H. Facile Synthesis and Solid-State Properties of Liquid-Crystalline Polypeptides Bearing Biphenyl Mesogens and Alkyl Tails. MACROMOL CHEM PHYS 2014. [DOI: 10.1002/macp.201400362] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Qiulin Yuan
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province; Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
| | - Dan Liu
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province; Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
| | - Yong Deng
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province; Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
| | - Ying Ling
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province; Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
| | - Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province; Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
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27
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Gkikas M, Haataja JS, Seitsonen J, Ruokolainen J, Ikkala O, Iatrou H, Houbenov N. Extended Self-Assembled Long Periodicity and Zig-Zag Domains from Helix–Helix Diblock Copolymer Poly(γ-benzyl-l-glutamate)-block-poly(O-benzyl-l-hydroxyproline). Biomacromolecules 2014; 15:3923-30. [DOI: 10.1021/bm5009734] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Manos Gkikas
- University of Athens, Department of Chemistry, Panepistimiopolis, Zografou, 15771 Athens, Greece
- Molecular
Materials, Department of Applied Physics, Aalto University School of Science and Technology (previously Helsinki University of Technology), P.O. Box 15100, FIN-00076 Aalto, Espoo, Finland
| | - Johannes S. Haataja
- Molecular
Materials, Department of Applied Physics, Aalto University School of Science and Technology (previously Helsinki University of Technology), P.O. Box 15100, FIN-00076 Aalto, Espoo, Finland
| | - Jani Seitsonen
- Molecular
Materials, Department of Applied Physics, Aalto University School of Science and Technology (previously Helsinki University of Technology), P.O. Box 15100, FIN-00076 Aalto, Espoo, Finland
- Nanomicroscopy
Center, Aalto University School of Science and Technology, P.O. Box 11000, FIN-00076 Aalto, Espoo, Finland
| | - Janne Ruokolainen
- Molecular
Materials, Department of Applied Physics, Aalto University School of Science and Technology (previously Helsinki University of Technology), P.O. Box 15100, FIN-00076 Aalto, Espoo, Finland
- Nanomicroscopy
Center, Aalto University School of Science and Technology, P.O. Box 11000, FIN-00076 Aalto, Espoo, Finland
| | - Olli Ikkala
- Molecular
Materials, Department of Applied Physics, Aalto University School of Science and Technology (previously Helsinki University of Technology), P.O. Box 15100, FIN-00076 Aalto, Espoo, Finland
| | - Hermis Iatrou
- University of Athens, Department of Chemistry, Panepistimiopolis, Zografou, 15771 Athens, Greece
| | - Nikolay Houbenov
- Molecular
Materials, Department of Applied Physics, Aalto University School of Science and Technology (previously Helsinki University of Technology), P.O. Box 15100, FIN-00076 Aalto, Espoo, Finland
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28
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Naderi S, van der Schoot P. Effect of bending flexibility on the phase behavior and dynamics of rods. J Chem Phys 2014; 141:124901. [DOI: 10.1063/1.4895730] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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29
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Gao H, Li G, Hu Z, Xiao Z, Liang G, Wu Q. Synthesis of amphiphilic polyethylene-b-poly(l-glutamate) block copolymers with vastly different solubilities and their stimuli-responsive polymeric micelles in aqueous solution. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.07.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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30
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Gagner JE, Kim W, Chaikof EL. Designing protein-based biomaterials for medical applications. Acta Biomater 2014; 10:1542-57. [PMID: 24121196 PMCID: PMC3960372 DOI: 10.1016/j.actbio.2013.10.001] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/29/2013] [Accepted: 10/01/2013] [Indexed: 02/01/2023]
Abstract
Biomaterials produced by nature have been honed through billions of years, evolving exquisitely precise structure-function relationships that scientists strive to emulate. Advances in genetic engineering have facilitated extensive investigations to determine how changes in even a single peptide within a protein sequence can produce biomaterials with unique thermal, mechanical and biological properties. Elastin, a naturally occurring protein polymer, serves as a model protein to determine the relationship between specific structural elements and desirable material characteristics. The modular, repetitive nature of the protein facilitates the formation of well-defined secondary structures with the ability to self-assemble into complex three-dimensional architectures on a variety of length scales. Furthermore, many opportunities exist to incorporate other protein-based motifs and inorganic materials into recombinant protein-based materials, extending the range and usefulness of these materials in potential biomedical applications. Elastin-like polypeptides (ELPs) can be assembled into 3-D architectures with precise control over payload encapsulation, mechanical and thermal properties, as well as unique functionalization opportunities through both genetic and enzymatic means. An overview of current protein-based materials, their properties and uses in biomedicine will be provided, with a focus on the advantages of ELPs. Applications of these biomaterials as imaging and therapeutic delivery agents will be discussed. Finally, broader implications and future directions of these materials as diagnostic and therapeutic systems will be explored.
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Affiliation(s)
- Jennifer E Gagner
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, and the Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215, USA
| | - Wookhyun Kim
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, and the Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215, USA
| | - Elliot L Chaikof
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, and the Wyss Institute of Biologically Inspired Engineering of Harvard University, Boston, MA 02215, USA.
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31
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Wang E, Desai MS, Heo K, Lee SW. Graphene-based materials functionalized with elastin-like polypeptides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2223-2229. [PMID: 24512378 DOI: 10.1021/la404333b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Graphene-based materials commonly require functionalization for biological applications in order to control their physical/colloidal properties and to introduce additional capabilities, such as stimuli-responsiveness and affinity to specific biomolecules. Here, we functionalized CVD-grown graphene and graphene oxide with a genetically engineered elastin-like polypeptide fused to a graphene binding peptide and then showed that the resulting hybrid materials exhibit thermo- and photoresponsive behaviors. Furthermore, we demonstrate that our genetic engineering strategy allows for the facile introduction of bioactivity to reduced graphene oxide. The stimuli-responsiveness and genetic tunability of our graphene-protein nanocomposites are attractive for addressing future biomedical applications.
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Affiliation(s)
- Eddie Wang
- Department of Bioengineering, University of California, Berkeley , Berkeley, California 94720, United States
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32
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Shih KY, Lin YC, Hsiao TS, Deng SL, Kuo SW, Hong JL. Amorphous and crystalline blends from polytyrosine and pyridine-functionalized anthracene: hydrogen-bond interactions, conformations, intramolecular charge transfer and aggregation-induced emission. Polym Chem 2014. [DOI: 10.1039/c4py00706a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new pyridine-terminated fluorophore of (E)-4-(2-(anthracen-9-yl)vinyl)pyridine (AnPy) with intramolecular charge transfer and aggregation-induced emission properties was synthesized and was blended with polytyrosine (PTyr) through hydrogen-bond interactions.
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Affiliation(s)
- Ke-Ying Shih
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424, Republic of China
| | - Yung-Chih Lin
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424, Republic of China
| | - Tai-Shen Hsiao
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424, Republic of China
| | - Shiang-Lin Deng
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424, Republic of China
| | - Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424, Republic of China
| | - Jin-Long Hong
- Department of Materials and Optoelectronic Science
- National Sun Yat-Sen University
- Kaohsiung 80424, Republic of China
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33
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Naderi S, van der Schoot P. Collective stringlike motion of semiflexible filamentous particles in columnar liquid crystalline phases. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2013; 88:032307. [PMID: 24125268 DOI: 10.1103/physreve.88.032307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Indexed: 06/02/2023]
Abstract
We study, by means of Brownian dynamics simulations, heterogeneous dynamics in a dense columnar phase of monodisperse hard filamentous particles, and find that in a background of barely moving particles, some particles occasionally engage in a fast coherent string-type motion similar to what is observed in glassy states of isometric particles. This fast motion is triggered by the exchange of particles between two or more columns at different positions in the columns, which leads to sudden displacement of particles between these positions. The distribution of particle displacements shows a pronounced peak at one particle length. We perform our simulations with particles of different persistence lengths and find that for more flexible particles, the number of jump events increases. As the number of particles in the columns increases with system size for a given linear fraction of particles in the columns, the peak in the distribution becomes wider and, for sufficiently large systems, the peak disappears completely. This is associated with the increase in the magnitude of fluctuations in the motion of particles as the system size increases. Our simulation results explain recent experimental observations on single-particle motion in dense columnar phases in aqueous dispersions of filamentous virus particles.
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Affiliation(s)
- Saber Naderi
- Faculteit Technische Natuurkunde, Technische Universiteit Eindhoven, Postbus 513, 5600 MB Eindhoven, The Netherlands and Dutch Polymer Institute, P.O. Box 902, 5600 AX Eindhoven, The Netherlands
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34
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Synthesis and thermoreversible gelation of coil-helical polyethylene-block-poly(γ-benzyl-l-glutamate) diblock copolymer. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.06.055] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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35
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Tang H, Zhang D. Solid state self-assembly of the single-walled carbon nanotubes and poly(γ-benzyl-l
-glutamate)s with different conformations. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Haoyu Tang
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province; Key Laboratory of Advanced Functional Polymer Materials of Colleges and Universities of Hunan Province; College of Chemistry; Xiangtan University; Xiangtan Hunan 411105 China
- Department of Chemistry and Macromolecular Studies Group; Louisiana State University; Baton Rouge Louisiana 70803
| | - Donghui Zhang
- Department of Chemistry and Macromolecular Studies Group; Louisiana State University; Baton Rouge Louisiana 70803
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36
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Wang E, Desai MS, Lee SW. Light-controlled graphene-elastin composite hydrogel actuators. NANO LETTERS 2013; 13:2826-30. [PMID: 23647361 PMCID: PMC3737518 DOI: 10.1021/nl401088b] [Citation(s) in RCA: 303] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Hydrogels actuators (HAs) that can reversibly respond to stimuli have applications in diverse fields. However, faster response rates and improved control over actuation timing and location are required to fulfill their potential. To address these criteria, we synthesized near-infrared light-driven HAs by interfacing genetically engineered elastin-like polypeptides with reduced-graphene oxide sheets. The resulting nanocomposites exhibited rapid and tunable motions controlled by light position, intensity, and path, including finger-like flexing and crawling. This work demonstrates the ability of rationally designed proteins to be combined with synthetic nanoparticles for the creation of macroscale functional materials.
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Affiliation(s)
- Eddie Wang
- Department of Bioengineering, University of California, Berkeley, Berkeley, California 94720, USA.Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
| | - Malav S. Desai
- Department of Bioengineering, University of California, Berkeley, Berkeley, California 94720, USA.Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
| | - Seung-Wuk Lee
- Department of Bioengineering, University of California, Berkeley, Berkeley, California 94720, USA.Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 USA
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37
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Oyamada K, Terao K, Suwa M, Kitamura S, Sato T. Lyotropic Liquid Crystallinity of Amylose Tris(alkylcarbamates): Cholesteric and Smectic Phase Formation in Different Solvents. Macromolecules 2013. [DOI: 10.1021/ma400787c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Keiko Oyamada
- Department of Macromolecular Science,
Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Ken Terao
- Department of Macromolecular Science,
Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Masayori Suwa
- Department of Chemistry, Graduate
School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Shinichi Kitamura
- Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Gakuen-cho, Nakaku, Sakai,
599-8531, Japan
| | - Takahiro Sato
- Department of Macromolecular Science,
Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
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38
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Wu IL, Patterson MA, Carpenter Desai HE, Mehl RA, Giorgi G, Conticello VP. Multiple Site-Selective Insertions of Noncanonical Amino Acids into Sequence-Repetitive Polypeptides. Chembiochem 2013; 14:968-78. [DOI: 10.1002/cbic.201300069] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Indexed: 11/11/2022]
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39
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Jahanshahi K, Botiz I, Reiter R, Thomann R, Heck B, Shokri R, Stille W, Reiter G. Crystallization of Poly(γ-benzyl l-glutamate) in Thin Film Solutions: Structure and Pattern Formation. Macromolecules 2013. [DOI: 10.1021/ma3024602] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaiwan Jahanshahi
- Institute of Physics, Faculty
of Mathematics and Physics, Albert-Ludwigs-University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg,
Germany
- Freiburg Materials Research Center (FMF), Stefan-Meier-Strasse 21, 79104
Freiburg, Germany
| | - Ioan Botiz
- Institute of Physics, Faculty
of Mathematics and Physics, Albert-Ludwigs-University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg,
Germany
- Freiburg Institute for Advanced Studies (FRIAS), Albertstrasse 19, 79104
Freiburg, Germany
| | - Renate Reiter
- Institute of Physics, Faculty
of Mathematics and Physics, Albert-Ludwigs-University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg,
Germany
| | - Ralf Thomann
- Freiburg Materials Research Center (FMF), Stefan-Meier-Strasse 21, 79104
Freiburg, Germany
| | - Barbara Heck
- Institute of Physics, Faculty
of Mathematics and Physics, Albert-Ludwigs-University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg,
Germany
| | - Roozbeh Shokri
- Institute of Physics, Faculty
of Mathematics and Physics, Albert-Ludwigs-University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg,
Germany
- Freiburg Materials Research Center (FMF), Stefan-Meier-Strasse 21, 79104
Freiburg, Germany
| | - Werner Stille
- Institute of Physics, Faculty
of Mathematics and Physics, Albert-Ludwigs-University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg,
Germany
| | - Günter Reiter
- Institute of Physics, Faculty
of Mathematics and Physics, Albert-Ludwigs-University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg,
Germany
- Freiburg Materials Research Center (FMF), Stefan-Meier-Strasse 21, 79104
Freiburg, Germany
- Freiburg Institute for Advanced Studies (FRIAS), Albertstrasse 19, 79104
Freiburg, Germany
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40
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Ikeda M. Bioinspired Supramolecular Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2013. [DOI: 10.1246/bcsj.20120254] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Masato Ikeda
- Department of Biomolecular Science, Graduate School of Engineering, Gifu University
- United Graduate School of Drug Discovery and Medical Information Science, Gifu University
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41
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The Wonder of Life in Its Chemical Aspect. HIERARCHICAL MACROMOLECULAR STRUCTURES: 60 YEARS AFTER THE STAUDINGER NOBEL PRIZE I 2013. [DOI: 10.1007/12_2013_261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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42
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Ordering of Polypeptides in Liquid Crystals, Gels and Micelles. CONTROLLED POLYMERIZATION AND POLYMERIC STRUCTURES 2013. [DOI: 10.1007/12_2013_221] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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43
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Bhatt MP, Sista P, Hao J, Hundt N, Biewer MC, Stefan MC. Electronic properties-morphology correlation of a rod-rod semiconducting liquid crystalline block copolymer containing poly(3-hexylthiophene). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:12762-12770. [PMID: 22889166 DOI: 10.1021/la301731w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The influence of the solvent and annealing temperature on the field-effect mobilities and morphologies of poly(3-hexylthiophene)-b-poly(γ-benzyl-L-glutamate) (P3HT-b-PBLG) rod-rod diblock copolymer has been investigated. Thin film X-ray diffraction studies show peaks originating from both P3HT and PBLG indicating that the crystalline nature of both the blocks is conserved after the formation of the block copolymer. It has been observed that the field-effect mobilities of the diblock copolymer are independent of the annealing temperatures for thin films deposited from both 1,2,4-trichlorobenzene and chloroform solvents. The correlation between the field-effect mobility and morphology indicates that the P3HT block self-assembles at the surface SiO(2) dielectric.
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Affiliation(s)
- Mahesh P Bhatt
- Department of Chemistry, University of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080, United States
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44
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Ganesan V, Kumar NA, Pryamitsyn V. Blockiness and Sequence Polydispersity Effects on the Phase Behavior and Interfacial Properties of Gradient Copolymers. Macromolecules 2012. [DOI: 10.1021/ma301136y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Venkat Ganesan
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - N. Arun Kumar
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Victor Pryamitsyn
- Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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45
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Hollenbeck JJ, Danner DJ, Landgren RM, Rainbolt TK, Roberts DS. Designed ankyrin repeat proteins as scaffolds for multivalent recognition. Biomacromolecules 2012; 13:1996-2002. [PMID: 22681396 DOI: 10.1021/bm300455f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ankyrin repeat (AR) proteins are composed of tandem repeats of a basic structural motif of ca. 33 amino acid residues that form a β-turn followed by two antiparallel α-helices. Multiple repeats stack together in a modular fashion to form a scaffold that is ideally suited for the presentation of multiple functional groups and/or recognition elements. Here we describe a biosynthetic strategy that takes advantage of the modular nature of these proteins to generate multivalent ligands that are both chemically homogeneous and structurally well-defined. Glycosylated AR proteins cluster the tetrameric lectin concanavalin A (Con A) at a rate that is comparable to the rate of Con A aggregation mediated by globular protein conjugates and variable density linear polymers. Thus, AR proteins define a new class of multivalent ligand scaffolds that have significant potential application in the study and control of a variety of multivalent interactions.
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Affiliation(s)
- Jessica J Hollenbeck
- Department of Chemistry, Trinity University, San Antonio, Texas 78212, United States.
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46
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Kotharangannagari VK, Sánchez-Ferrer A, Ruokolainen J, Mezzenga R. Thermoreversible Gel–Sol Behavior of Rod–Coil–Rod Peptide-Based Triblock Copolymers. Macromolecules 2012. [DOI: 10.1021/ma2026379] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Venkata Krishna Kotharangannagari
- Department of Physics and Frimat
Center for Nanomaterials, University of Fribourg, Chemin du Museé 3, 1700 Fribourg, Switzerland
- Food & Soft Materials Science, Institute of Food, Nutrition & Health, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland
| | - Antoni Sánchez-Ferrer
- Food & Soft Materials Science, Institute of Food, Nutrition & Health, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland
| | - Janne Ruokolainen
- Department of Applied Physics, AALTO University, P.O. Box 15100, 00076 Helsinki, Finland
| | - Raffaele Mezzenga
- Food & Soft Materials Science, Institute of Food, Nutrition & Health, ETH Zurich, Schmelzbergstrasse 9, 8092 Zurich, Switzerland
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47
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Chang DHC, Johnston APR, Wark KL, Breheney K, Caruso F. Engineered Bacterially Expressed Polypeptides: Assembly into Polymer Particles with Tailored Degradation Profiles. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201106033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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48
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Li ST, Lin YC, Kuo SW, Chuang WT, Hong JL. Aggregation induced emission enhancement in relation to the secondary structures of poly(γ-benzyl-l-glutamate) containing a fluorescent tetraphenylthiophene moiety. Polym Chem 2012. [DOI: 10.1039/c2py20221b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Engineered Bacterially Expressed Polypeptides: Assembly into Polymer Particles with Tailored Degradation Profiles. Angew Chem Int Ed Engl 2011; 51:460-4. [DOI: 10.1002/anie.201106033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Revised: 10/13/2011] [Indexed: 12/16/2022]
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50
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Kuo SW, Chen CJ. Using Hydrogen-Bonding Interactions To Control the Peptide Secondary Structures and Miscibility Behavior of Poly(l-glutamate)s with Phenolic Resin. Macromolecules 2011. [DOI: 10.1021/ma200721e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shiao-Wei Kuo
- Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Chi-Jen Chen
- Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung, Taiwan
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