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Firouzeh S, Hossain MA, Cuerva JM, Álvarez de Cienfuegos L, Pramanik S. Chirality-Induced Spin Selectivity in Composite Materials: A Device Perspective. Acc Chem Res 2024; 57:1478-1487. [PMID: 38687873 DOI: 10.1021/acs.accounts.4c00077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
ConspectusMagnetism is an area of immense fundamental and technological importance. At the atomic level, magnetism originates from electron "spin". The field of nanospintronics (or nanoscale spin-based electronics) aims to control spins in nanoscale systems, which has resulted in astronomical improvement in data storage and magnetic field sensing technologies over the past few decades, recognized by the 2007 Nobel Prize in Physics. Spins in nanoscale solid-state devices can also act as quantum bits or qubits for emerging quantum technologies, such as quantum computing and quantum sensing.Due to the fundamental connection between magnetism and spins, ferromagnets play a key role in many solid-state spintronic devices. This is because at the Fermi level, electron density of states is spin-polarized, which permits ferromagnets to act as electrical injectors and detectors of spins. Ferromagnets, however, have limitations in terms of low spin polarization at the Fermi level, stray magnetic fields, crosstalk, and thermal instability at the nanoscale. Therefore, new physics and new materials are needed to propel spintronic and quantum device technologies to the true atomic limit. Emerging new phenomena such as chirality induced spin selectivity or CISS, in which an intriguing correlation between carrier spin and medium chirality is observed, could therefore be instrumental in nanospintronics. This effect could allow molecular-scale, chirality controlled spin injection and detection without the need for any ferromagnet, thus opening a fundamentally new direction for device spintronics.While CISS finds a myriad of applications in diverse areas such as chiral separation, recognition, detection, and asymmetric catalysis, in this focused Account, we exclusively review spintronic device results of this effect due to its immense potential for future spintronics. The first generation of CISS-based spintronic devices have primarily used chiral bioorganic molecules; however, many practical limitations of these materials have also been identified. Therefore, our discussion revolves around the family of chiral composite materials, which may emerge as an ideal platform for CISS due to their ability to assimilate various desirable material properties on a single platform. This class of materials has been extensively studied by the organic chemistry community in the past decades, and we discuss the various chirality transfer mechanisms that have been identified, which play a central role in CISS. Next, we discuss CISS device studies performed on some of these chiral composite materials. Emphasis is given to the family of chiral organic-carbon allotrope composites, which have been extensively studied by the authors of this Account over the past several years. Interestingly, due to the presence of multiple materials, CISS signals from hybrid chiral systems sometimes differ from those observed in purely chiral systems. Given the sheer diversity of chiral composite materials, CISS device studies so far have been limited to only a few varieties, and this Account is expected to draw increased attention to the family of chiral composites and motivate further studies of their CISS applications.
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Affiliation(s)
- Seyedamin Firouzeh
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Md Anik Hossain
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Juan Manuel Cuerva
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
- Instituto de Investigación Biosanitaria ibs., Avda. De Madrid, 15, E-18016 Granada, Spain
| | - Sandipan Pramanik
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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Firouzeh S, Illescas-Lopez S, Hossain MA, Cuerva JM, Álvarez de Cienfuegos L, Pramanik S. Chirality-Induced Spin Selectivity in Supramolecular Chirally Functionalized Graphene. ACS Nano 2023; 17:20424-20433. [PMID: 37668559 PMCID: PMC10604086 DOI: 10.1021/acsnano.3c06903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 08/30/2023] [Indexed: 09/06/2023]
Abstract
Chiral graphene hybrid materials have attracted significant attention in recent years due to their various applications in the areas of chiral catalysis, chiral separation and recognition, enantioselective sensing, etc. On the other hand, chiral materials are also known to exhibit chirality-dependent spin transmission, commonly dubbed "chirality induced spin selectivity" or CISS. However, CISS properties of chiral graphene materials are largely unexplored. As such, it is not clear whether graphene is even a promising material for the CISS effect given its weak spin-orbit interaction. Here, we report the CISS effect in chiral graphene sheets, in which a graphene derivative (reduced graphene oxide or rGO) is noncovalently functionalized with chiral Fmoc-FF (Fmoc-diphenylalanine) supramolecular fibers. The graphene flakes acquire a "conformational chirality" postfunctionalization, which, combined with other factors, is presumably responsible for the CISS signal. The CISS signal correlates with the supramolecular chirality of the medium, which depends on the thickness of graphene used. Quite interestingly, the noncovalent supramolecular chiral functionalization of conductive materials offers a simple and straightforward methodology to induce chirality and CISS properties in a multitude of easily accessible advanced conductive materials.
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Affiliation(s)
- Seyedamin Firouzeh
- Department
of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Sara Illescas-Lopez
- Universidad
de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina
y Medioambiente, C. U.
Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
| | - Md Anik Hossain
- Department
of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Juan Manuel Cuerva
- Universidad
de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina
y Medioambiente, C. U.
Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Universidad
de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina
y Medioambiente, C. U.
Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
- Instituto
de Investigación Biosanitaria ibs., Avda. De Madrid, 15, E-18016 Granada, Spain
| | - Sandipan Pramanik
- Department
of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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Firouzeh S, Illescas-Lopez S, Hossain MA, Cuerva JM, Álvarez de Cienfuegos L, Pramanik S. Chirality-induced spin selectivity in functionalized carbon nanotube networks: The role of spin-orbit coupling. J Chem Phys 2023; 159:034708. [PMID: 37466230 DOI: 10.1063/5.0156348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/28/2023] [Indexed: 07/20/2023] Open
Abstract
Spin-orbit coupling in a chiral medium is generally assumed to be a necessary ingredient for the observation of the chirality-induced spin selectivity (CISS) effect. However, some recent studies have suggested that CISS may manifest even when the chiral medium has zero spin-orbit coupling. In such systems, CISS may arise due to an orbital polarization effect, which generates an electromagnetochiral anisotropy in two-terminal conductance. Here, we examine these concepts using a chirally functionalized carbon nanotube network as the chiral medium. A transverse measurement geometry is used, which nullifies any electromagnetochiral contribution but still exhibits the tell-tale signs of the CISS effect. This suggests that CISS may not be explained solely by electromagnetochiral effects. The role of nanotube spin-orbit coupling on the observed pure CISS signal is studied by systematically varying nanotube diameter. We find that the magnitude of the CISS signal scales proportionately with the spin-orbit coupling strength of the nanotubes. We also find that nanotube diameter dictates the supramolecular chirality of the medium, which in turn determines the sign of the CISS signal.
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Affiliation(s)
- Seyedamin Firouzeh
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Sara Illescas-Lopez
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
| | - Md Anik Hossain
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Juan Manuel Cuerva
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
- Instituto de Investigación Biosanitaria ibs, Avda. De Madrid, 15, E-18016 Granada, Spain
| | - Sandipan Pramanik
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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Furuta A, Coleman M, Casares R, Seepersaud R, Orvis A, Brokaw A, Quach P, Nguyen S, Sweeney E, Sharma K, Wallen G, Sanghavi R, Mateos-Gil J, Cuerva JM, Millán A, Rajagopal L. CD1 and iNKT cells mediate immune responses against the GBS hemolytic lipid toxin induced by a non-toxic analog. PLoS Pathog 2023; 19:e1011490. [PMID: 37384812 DOI: 10.1371/journal.ppat.1011490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 06/14/2023] [Indexed: 07/01/2023] Open
Abstract
Although hemolytic lipids have been discovered from many human pathogens including Group B Streptococcus (GBS), strategies that neutralize their function are lacking. GBS is a leading cause of pregnancy-associated neonatal infections, and adult GBS infections are on the rise. The GBS hemolytic lipid toxin or granadaene, is cytotoxic to many immune cells including T and B cells. We previously showed that mice immunized with a synthetic nontoxic analog of granadaene known as R-P4 had reduced bacterial dissemination during systemic infection. However, mechanisms important for R-P4 mediated immune protection was not understood. Here, we show that immune serum from R-P4-immunized mice facilitate GBS opsonophagocytic killing and protect naïve mice from GBS infection. Further, CD4+ T cells isolated from R-P4-immunized mice proliferated in response to R-P4 stimulation in a CD1d- and iNKT cell-dependent manner. Consistent with these observations, R-P4 immunized mice lacking CD1d or CD1d-restricted iNKT cells exhibit elevated bacterial burden. Additionally, adoptive transfer of iNKT cells from R-P4 vaccinated mice significantly reduced GBS dissemination compared to adjuvant controls. Finally, maternal R-P4 vaccination provided protection against ascending GBS infection during pregnancy. These findings are relevant in the development of therapeutic strategies targeting lipid cytotoxins.
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Affiliation(s)
- Anna Furuta
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
| | - Michelle Coleman
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Raquel Casares
- Department of Organic Chemistry, University of Granada, Granada, Spain
| | - Ravin Seepersaud
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Austyn Orvis
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Alyssa Brokaw
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
| | - Phoenicia Quach
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Shayla Nguyen
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Erin Sweeney
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Kavita Sharma
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Grace Wallen
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
| | - Rhea Sanghavi
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
| | - Jaime Mateos-Gil
- Department of Organic Chemistry, University of Granada, Granada, Spain
| | | | - Alba Millán
- Department of Organic Chemistry, University of Granada, Granada, Spain
| | - Lakshmi Rajagopal
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, Washington, United States of America
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Pediatrics, University of Washington, Seattle, Washington, United States of America
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5
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Medina-Carmona E, Gutierrez-Rus LI, Manssour-Triedo F, Newton MS, Gamiz-Arco G, Mota AJ, Reiné P, Cuerva JM, Ortega-Muñoz M, Andrés-León E, Ortega-Roldan JL, Seelig B, Ibarra-Molero B, Sanchez-Ruiz JM. Cell Survival Enabled by Leakage of a Labile Metabolic Intermediate. Mol Biol Evol 2023; 40:7036845. [PMID: 36788592 PMCID: PMC9989741 DOI: 10.1093/molbev/msad032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 01/19/2023] [Accepted: 02/07/2023] [Indexed: 02/16/2023] Open
Abstract
Many metabolites are generated in one step of a biochemical pathway and consumed in a subsequent step. Such metabolic intermediates are often reactive molecules which, if allowed to freely diffuse in the intracellular milieu, could lead to undesirable side reactions and even become toxic to the cell. Therefore, metabolic intermediates are often protected as protein-bound species and directly transferred between enzyme active sites in multi-functional enzymes, multi-enzyme complexes, and metabolons. Sequestration of reactive metabolic intermediates thus contributes to metabolic efficiency. It is not known, however, whether this evolutionary adaptation can be relaxed in response to challenges to organismal survival. Here, we report evolutionary repair experiments on Escherichia coli cells in which an enzyme crucial for the biosynthesis of proline has been deleted. The deletion makes cells unable to grow in a culture medium lacking proline. Remarkably, however, cell growth is efficiently restored by many single mutations (12 at least) in the gene of glutamine synthetase. The mutations cause the leakage to the intracellular milieu of a highly reactive phosphorylated intermediate common to the biosynthetic pathways of glutamine and proline. This intermediate is generally assumed to exist only as a protein-bound species. Nevertheless, its diffusion upon mutation-induced leakage enables a new route to proline biosynthesis. Our results support that leakage of sequestered metabolic intermediates can readily occur and contribute to organismal adaptation in some scenarios. Enhanced availability of reactive molecules may enable the generation of new biochemical pathways and the potential of mutation-induced leakage in metabolic engineering is noted.
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Affiliation(s)
- Encarnación Medina-Carmona
- Departamento de Quimica Fisica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain.,School of Biosciences, University of Kent, Canterbury, United Kingdom
| | - Luis I Gutierrez-Rus
- Departamento de Quimica Fisica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Fadia Manssour-Triedo
- Departamento de Quimica Fisica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Matilda S Newton
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN.,BioTechnology Institute, University of Minnesota, St Paul, MN
| | - Gloria Gamiz-Arco
- Departamento de Quimica Fisica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Antonio J Mota
- Departamento de Quimica Inorganica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Pablo Reiné
- Departamento de Quimica Organica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Juan Manuel Cuerva
- Departamento de Quimica Organica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Mariano Ortega-Muñoz
- Departamento de Quimica Organica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Eduardo Andrés-León
- Unidad de Bioinformática, Instituto de Parasitología y Biomedicina "Lopez Neyra", CSIC, Armilla, Granada, Spain
| | | | - Burckhard Seelig
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN.,BioTechnology Institute, University of Minnesota, St Paul, MN
| | - Beatriz Ibarra-Molero
- Departamento de Quimica Fisica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
| | - Jose M Sanchez-Ruiz
- Departamento de Quimica Fisica, Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Granada, Spain
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6
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Hossain MA, Illescas-Lopez S, Nair R, Cuerva JM, Álvarez de Cienfuegos L, Pramanik S. Transverse magnetoconductance in two-terminal chiral spin-selective devices. Nanoscale Horiz 2023; 8:320-330. [PMID: 36740957 DOI: 10.1039/d2nh00502f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The phenomenon of chirality induced spin selectivity (CISS) has triggered significant activity in recent years, although many aspects of it remain to be understood. For example, most investigations are focused on spin polarizations collinear to the charge current, and hence longitudinal magnetoconductance (MC) is commonly studied in two-terminal transport experiments. Very little is known about the transverse spin components and transverse MC - their existence, as well as any dependence of this component on chirality. Furthermore, the measurement of the CISS effect via two-terminal MC experiments remains a controversial topic. Detection of this effect in the linear response regime is debated, with contradicting reports in the literature. Finally, the potential influence of the well-known electric magnetochiral effect on CISS remains unclear. To shed light on these issues, in this work we have investigated the bias dependence of the CISS effect using planar carbon nanotube networks functionalized with chiral molecules. We find that (a) transverse MC exists and exhibits tell-tale signs of the CISS effect, (b) transverse CISS MC vanishes in the linear response regime establishing the validity of Onsager's relation in two-terminal CISS systems, and finally (c) the CISS signal remains present even in the absence of electric magneto chiral effects, suggesting the existence of an alternative physical origin of CISS MC.
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Affiliation(s)
- Md Anik Hossain
- Department of Electrical and Computer Engineering, University of Alberta, Alberta, T6G 1H9, Canada.
| | - Sara Illescas-Lopez
- Departamento de Química Orgánica, Universidad de Granada, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071, Granada, Spain
| | - Rahul Nair
- Department of Electrical and Computer Engineering, University of Alberta, Alberta, T6G 1H9, Canada.
- School of Electronics Engineering, Vellore Institute of Technology, Chennai, 600127, India
| | - Juan Manuel Cuerva
- Departamento de Química Orgánica, Universidad de Granada, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071, Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Departamento de Química Orgánica, Universidad de Granada, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. Avda. De Madrid, 15, E-18016, Granada, Spain
| | - Sandipan Pramanik
- Department of Electrical and Computer Engineering, University of Alberta, Alberta, T6G 1H9, Canada.
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Rahman MW, Mañas-Torres MC, Firouzeh S, Illescas-Lopez S, Cuerva JM, Lopez-Lopez MT, de Cienfuegos LÁ, Pramanik S. Chirality-Induced Spin Selectivity in Heterochiral Short-Peptide-Carbon-Nanotube Hybrid Networks: Role of Supramolecular Chirality. ACS Nano 2022; 16:16941-16953. [PMID: 36219724 DOI: 10.1021/acsnano.2c07040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Supramolecular short-peptide assemblies have been widely used for the development of biomaterials with potential biomedical applications. These peptides can self-assemble in a multitude of chiral hierarchical structures triggered by the application of different stimuli, such as changes in temperature, pH, solvent, etc. The self-assembly process is sensitive to the chemical composition of the peptides, being affected by specific amino acid sequence, type, and chirality. The resulting supramolecular chirality of these materials has been explored to modulate protein and cell interactions. Recently, significant attention has been focused on the development of chiral materials with potential spintronic applications, as it has been shown that transport of charge carriers through a chiral environment polarizes the carrier spins. This effect, named chirality-induced spin selectivity or CISS, has been studied in different chiral organic molecules and materials, as well as carbon nanotubes functionalized with chiral molecules. Nevertheless, this effect has been primarily explored in homochiral systems in which the chirality of the medium, and hence the resulting spin polarization, is defined by the chirality of the molecule, with limited options for tunability. Herein, we have developed heterochiral carbon-nanotube-short-peptide materials made by the combination of two different chiral sources: that is, homochiral peptides (l/d) + glucono-δ-lactone. We show that the presence of a small amount of glucono-δ-lactone with fixed chirality can alter the supramolecular chirality of the medium, thereby modulating the sign of the spin signal from "up" to "down" and vice versa. In addition, small amounts of glucono-δ-lactone can even induce nonzero spin polarization in an otherwise achiral and spin-inactive peptide-nanotube composite. Such "chiral doping" strategies could allow the development of complementary CISS-based spintronic devices and circuits on a single material platform.
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Affiliation(s)
- Md Wazedur Rahman
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AlbertaT6G 1H9, Canada
| | - Mari C Mañas-Torres
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071Granada, Spain
| | - Seyedamin Firouzeh
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AlbertaT6G 1H9, Canada
| | - Sara Illescas-Lopez
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071Granada, Spain
| | - Juan Manuel Cuerva
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071Granada, Spain
| | - Modesto T Lopez-Lopez
- Universidad de Granada, Departamento de Física Aplicada, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071Granada, Spain
- Instituto de Investigación Biosanitaria ibs.Avda. De Madrid, 15, E-18012Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Universidad de Granada, Departamento de Química Orgánica, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071Granada, Spain
- Instituto de Investigación Biosanitaria ibs.Avda. De Madrid, 15, E-18012Granada, Spain
| | - Sandipan Pramanik
- Department of Electrical and Computer Engineering, University of Alberta, Edmonton, AlbertaT6G 1H9, Canada
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8
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Rahman MW, Mañas-Torres MC, Firouzeh S, Cuerva JM, Álvarez de Cienfuegos L, Pramanik S. Molecular Functionalization and Emergence of Long-Range Spin-Dependent Phenomena in Two-Dimensional Carbon Nanotube Networks. ACS Nano 2021; 15:20056-20066. [PMID: 34870421 DOI: 10.1021/acsnano.1c07739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Molecular functionalization of CNTs is a routine procedure in the field of nanotechnology. However, whether and how these molecules affect the spin polarization of the charge carriers in CNTs are largely unknown. In this work we demonstrate that spin polarization can indeed be induced in two-dimensional (2D) CNT networks by "certain" molecules and the spin signal routinely survives length scales significantly exceeding 1 μm. This result effectively connects the area of molecular spintronics with that of carbon-based 2D nanoelectronics. By using the versatility of peptide chemistry, we further demonstrate how spin polarization depends on molecular structural features such as chirality as well as molecule-nanotube interactions. A chirality-independent effect was detected in addition to the more common chirality-dependent effect, and the overall spin signal was found to be a combination of both. Finally, the magnetic field dependence of the spin signals has been explored, and the "chirality-dependent" signal has been found to exist only in certain field angles.
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Affiliation(s)
- Md Wazedur Rahman
- Department of Electrical and Computer Engineering, University of Alberta, Alberta T6G 1H9, Canada
| | - Mari C Mañas-Torres
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071 Granada, Spain
| | - Seyedamin Firouzeh
- Department of Electrical and Computer Engineering, University of Alberta, Alberta T6G 1H9, Canada
| | - Juan Manuel Cuerva
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071 Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Departamento de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia de Química Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071 Granada, Spain
| | - Sandipan Pramanik
- Department of Electrical and Computer Engineering, University of Alberta, Alberta T6G 1H9, Canada
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9
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Gutierrez-Rus LI, Gamiz-Arco G, Risso VA, Ibarra-Molero B, Hoshino Y, Petrović D, Justicia J, Manuel Cuerva J, Romero-Rivera A, Seelig B, Gavira JA, Kamerlin SC, Gaucher EA, Sanchez-Ruiz JM. Resurrected Ancestral TIM-Barrel Glycosidase Displays Heme Binding and Allosteric Modulation. Biophys J 2021. [DOI: 10.1016/j.bpj.2020.11.971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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10
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Gamiz-Arco G, Gutierrez-Rus LI, Risso VA, Ibarra-Molero B, Hoshino Y, Petrović D, Justicia J, Cuerva JM, Romero-Rivera A, Seelig B, Gavira JA, Kamerlin SCL, Gaucher EA, Sanchez-Ruiz JM. Heme-binding enables allosteric modulation in an ancient TIM-barrel glycosidase. Nat Commun 2021; 12:380. [PMID: 33452262 PMCID: PMC7810902 DOI: 10.1038/s41467-020-20630-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 12/11/2020] [Indexed: 12/11/2022] Open
Abstract
Glycosidases are phylogenetically widely distributed enzymes that are crucial for the cleavage of glycosidic bonds. Here, we present the exceptional properties of a putative ancestor of bacterial and eukaryotic family-1 glycosidases. The ancestral protein shares the TIM-barrel fold with its modern descendants but displays large regions with greatly enhanced conformational flexibility. Yet, the barrel core remains comparatively rigid and the ancestral glycosidase activity is stable, with an optimum temperature within the experimental range for thermophilic family-1 glycosidases. None of the ∼5500 reported crystallographic structures of ∼1400 modern glycosidases show a bound porphyrin. Remarkably, the ancestral glycosidase binds heme tightly and stoichiometrically at a well-defined buried site. Heme binding rigidifies this TIM-barrel and allosterically enhances catalysis. Our work demonstrates the capability of ancestral protein reconstructions to reveal valuable but unexpected biomolecular features when sampling distant sequence space. The potential of the ancestral glycosidase as a scaffold for custom catalysis and biosensor engineering is discussed. Family 1 glycosidases (GH1) are present in the three domains of life and share classical TIM-barrel fold. Structural and biochemical analyses of a resurrected ancestral GH1 enzyme reveal heme binding, not known in its modern descendants. Heme rigidifies the TIM-barrel and allosterically enhances catalysis.
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Affiliation(s)
- Gloria Gamiz-Arco
- Departamento de Quimica Fisica. Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071, Granada, Spain
| | - Luis I Gutierrez-Rus
- Departamento de Quimica Fisica. Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071, Granada, Spain
| | - Valeria A Risso
- Departamento de Quimica Fisica. Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071, Granada, Spain
| | - Beatriz Ibarra-Molero
- Departamento de Quimica Fisica. Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071, Granada, Spain
| | - Yosuke Hoshino
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA
| | - Dušan Petrović
- Science for Life Laboratory, Department of Chemistry-BMC, Uppsala University, BMC Box 576, S-751 23, Uppsala, Sweden.,Hit Discovery, Discovery Sciences, Biopharmaceutical R&D, AstraZeneca, 431 50, Gothenburg, Sweden
| | - Jose Justicia
- Departamento de Quimica Organica. Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071, Granada, Spain
| | - Juan Manuel Cuerva
- Departamento de Quimica Organica. Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071, Granada, Spain
| | - Adrian Romero-Rivera
- Science for Life Laboratory, Department of Chemistry-BMC, Uppsala University, BMC Box 576, S-751 23, Uppsala, Sweden
| | - Burckhard Seelig
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota, United States of America, & BioTechnology Institute, University of Minnesota, St. Paul, MN, USA
| | - Jose A Gavira
- Laboratorio de Estudios Cristalograficos, Instituto Andaluz de Ciencias de la Tierra, CSIC, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, Avenida de las Palmeras 4, Granada, 18100, Armilla, Spain
| | - Shina C L Kamerlin
- Science for Life Laboratory, Department of Chemistry-BMC, Uppsala University, BMC Box 576, S-751 23, Uppsala, Sweden.
| | - Eric A Gaucher
- Department of Biology, Georgia State University, Atlanta, GA, 30303, USA.
| | - Jose M Sanchez-Ruiz
- Departamento de Quimica Fisica. Facultad de Ciencias, Unidad de Excelencia de Quimica Aplicada a Biomedicina y Medioambiente (UEQ), Universidad de Granada, 18071, Granada, Spain.
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11
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Ortuño AM, Reiné P, Resa S, Álvarez de Cienfuegos L, Blanco V, Paredes JM, Mota AJ, Mazzeo G, Abbate S, Ugalde JM, Mujica V, Longhi G, Miguel D, Cuerva JM. Extended enantiopure ortho-phenylene ethylene ( o-OPE)-based helical systems as scaffolds for supramolecular architectures: a study of chiroptical response and its connection to the CISS effect. Org Chem Front 2021. [DOI: 10.1039/d1qo00822f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Versatile enantiopure helical systems are described and are of interest owing to their intense chiroptical responses, their attractive architecture for metallosupramolecular chemistry and CISS effect.
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Affiliation(s)
- Ana M. Ortuño
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | - Pablo Reiné
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | - Sandra Resa
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | - Victor Blanco
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
| | | | - Antonio J. Mota
- Department of Inorganic Chemistry, Faculty of Science, UGR-UEQ
| | - Giuseppe Mazzeo
- Department of Molecular and Translational Medicine, Università di Brescia, Brescia, Italy
- Istituto Nazionale di Ottica – CNR, Brescia Research Unit, via Branze 45, 25123 Brescia, Italy
| | - Sergio Abbate
- Department of Molecular and Translational Medicine, Università di Brescia, Brescia, Italy
- Istituto Nazionale di Ottica – CNR, Brescia Research Unit, via Branze 45, 25123 Brescia, Italy
| | - Jesus M. Ugalde
- Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC), P. K. 1072, 20080 Donostia, Euskadi, Spain
| | - Vladimiro Mujica
- Kimika Fakultatea, Euskal Herriko Unibertsitatea and Donostia International Physics Center (DIPC), P. K. 1072, 20080 Donostia, Euskadi, Spain
- Arizona State University, School of Molecular Sciences, Tempe, AZ 85287, USA
| | - Giovanna Longhi
- Department of Molecular and Translational Medicine, Università di Brescia, Brescia, Italy
- Istituto Nazionale di Ottica – CNR, Brescia Research Unit, via Branze 45, 25123 Brescia, Italy
| | - Delia Miguel
- Department of Physical Chemistry, Faculty of Pharmacy, UGR-UEQ
| | - Juan Manuel Cuerva
- Department of Organic Chemistry, Faculty of Science, Universidad de Granada (UGR), Unidad de Excelencia de Química (UEQ), E-18071 Granada, Spain
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12
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Gila-Vilchez C, Mañas-Torres MC, González-Vera JA, Franco-Montalban F, Tamayo JA, Conejero-Lara F, Cuerva JM, Lopez-Lopez MT, Orte A, Álvarez de Cienfuegos L. Insights into the co-assemblies formed by different aromatic short-peptide amphiphiles. Polym Chem 2021. [DOI: 10.1039/d1py01366a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The mechanism of co-assembly of different aromatic dipeptides has been studied using a combination of microscopy and spectroscopy techniques. At an equimolar ratio, the kinetics of the process is favored giving rise to alternate copolymers.
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Affiliation(s)
- Cristina Gila-Vilchez
- Universidad de Granada, Departamento de Física Aplicada, Facultad de Ciencias, 18071 Granada, Spain
| | - Mari C. Mañas-Torres
- Universidad de Granada, Dpto de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ), 18071-Granada, Spain
| | - Juan A. González-Vera
- Universidad de Granada, Nanoscopy-UGR Laboratory. Dpto de FisicoQuímica, Facultad de Farmacia, UEQ, 18072-Granada, Spain
| | - Francisco Franco-Montalban
- Universidad de Granada, Dpto de Química Farmacéutica y Orgánica, Facultad de Farmacia, 18072-Granada, Spain
| | - Juan A. Tamayo
- Universidad de Granada, Dpto de Química Farmacéutica y Orgánica, Facultad de Farmacia, 18072-Granada, Spain
| | | | - Juan Manuel Cuerva
- Universidad de Granada, Dpto de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ), 18071-Granada, Spain
| | - Modesto T. Lopez-Lopez
- Universidad de Granada, Departamento de Física Aplicada, Facultad de Ciencias, 18071 Granada, Spain
- Instituto de Investigación Biosanitaria ibs.GRANADA, Spain
| | - Angel Orte
- Universidad de Granada, Nanoscopy-UGR Laboratory. Dpto de FisicoQuímica, Facultad de Farmacia, UEQ, 18072-Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Universidad de Granada, Dpto de Química Orgánica, Facultad de Ciencias, Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ), 18071-Granada, Spain
- Instituto de Investigación Biosanitaria ibs.GRANADA, Spain
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13
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Armistead B, Whidbey C, Iyer LM, Herrero-Foncubierta P, Quach P, Haidour A, Aravind L, Cuerva JM, Jaspan HB, Rajagopal L. Corrigendum: The cyl Genes Reveal the Biosynthetic and Evolutionary Origins of the Group B Streptococcus Hemolytic Lipid, Granadaene. Front Microbiol 2020; 11:325. [PMID: 32161580 PMCID: PMC7052477 DOI: 10.3389/fmicb.2020.00325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 02/14/2020] [Indexed: 11/17/2022] Open
Affiliation(s)
- Blair Armistead
- Department of Global Health, University of Washington, Seattle, WA, United States.,Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States
| | - Christopher Whidbey
- Department of Global Health, University of Washington, Seattle, WA, United States.,Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States
| | - Lakshminarayan M Iyer
- Computational Biology Branch, National Center for Biotechnology Information, National Institutes of Health, Bethesda, MD, United States
| | | | - Phoenicia Quach
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States
| | - Ali Haidour
- Department of Organic Chemistry, University of Granada, Granada, Spain
| | - L Aravind
- Computational Biology Branch, National Center for Biotechnology Information, National Institutes of Health, Bethesda, MD, United States
| | | | - Heather B Jaspan
- Department of Global Health, University of Washington, Seattle, WA, United States.,Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States.,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States.,Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Lakshmi Rajagopal
- Department of Global Health, University of Washington, Seattle, WA, United States.,Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States.,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
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14
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Armistead B, Whidbey C, Iyer LM, Herrero-Foncubierta P, Quach P, Haidour A, Aravind L, Cuerva JM, Jaspan HB, Rajagopal L. The cyl Genes Reveal the Biosynthetic and Evolutionary Origins of the Group B Streptococcus Hemolytic Lipid, Granadaene. Front Microbiol 2020; 10:3123. [PMID: 32038561 PMCID: PMC6985545 DOI: 10.3389/fmicb.2019.03123] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 12/24/2019] [Indexed: 01/31/2023] Open
Abstract
Group B Streptococcus (GBS) is a β-hemolytic, Gram-positive bacterium that commonly colonizes the female lower genital tract and is associated with fetal injury, preterm birth, spontaneous abortion, and neonatal infections. A major factor promoting GBS virulence is the β-hemolysin/cytolysin, which is cytotoxic to several host cells. We recently showed that the ornithine rhamnolipid pigment, Granadaene, produced by the gene products of the cyl operon, is hemolytic. Here, we demonstrate that heterologous expression of the GBS cyl operon conferred hemolysis, pigmentation, and cytoxicity to Lactococcus lactis, a model non-hemolytic Gram-positive bacterium. Similarly, pigment purified from L. lactis is hemolytic, cytolytic, and identical in structure to Granadaene extracted from GBS, indicating the cyl operon is sufficient for Granadaene production in a heterologous host. Using a systematic survey of phyletic patterns and contextual associations of the cyl genes, we identify homologs of the cyl operon in physiologically diverse Gram-positive bacteria and propose undescribed functions of cyl gene products. Together, these findings bring greater understanding to the biosynthesis and evolutionary foundations of a key GBS virulence factor and suggest that such potentially toxic lipids may be encoded by other bacteria.
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Affiliation(s)
- Blair Armistead
- Department of Global Health, University of Washington, Seattle, WA, United States.,Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States
| | - Christopher Whidbey
- Department of Global Health, University of Washington, Seattle, WA, United States.,Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States
| | - Lakshminarayan M Iyer
- Computational Biology Branch, National Center for Biotechnology Information, National Institutes of Health, Bethesda, MD, United States
| | | | - Phoenicia Quach
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States
| | - Ali Haidour
- Department of Organic Chemistry, University of Granada, Granada, Spain
| | - L Aravind
- Computational Biology Branch, National Center for Biotechnology Information, National Institutes of Health, Bethesda, MD, United States
| | | | - Heather B Jaspan
- Department of Global Health, University of Washington, Seattle, WA, United States.,Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States.,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States.,Department of Pathology, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa
| | - Lakshmi Rajagopal
- Department of Global Health, University of Washington, Seattle, WA, United States.,Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, United States.,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
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15
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Luque-Muñoz A, Tapia R, Haidour A, Justicia J, Cuerva JM. Quantification of oleacein and oleuropein aglycone in olive oil using deuterated surrogates by normal-phase ultra high performance liquid chromatography with quadrupole time-of-flight mass spectrometry. J Sep Sci 2018; 41:4272-4280. [PMID: 30298978 DOI: 10.1002/jssc.201800677] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 09/14/2018] [Accepted: 09/24/2018] [Indexed: 12/18/2022]
Abstract
An analytical method for the analysis of relevant secoiridoid-based components in olive oil, oleacein and oleuropein aglycone, is described using for the first time deuterated surrogates. 0.2 g of sample was necessary to perform the analysis using liquid-liquid extraction and ultrasound-assisted extraction with a mixture of methanol/water (4:1, v/v). To avoid the formation of by-products, normal-phase ultra high performance liquid chromatography was chosen for the chromatographic separation. The selected mobile phase was a gradient mixture of tetrahydrofurane and hexane, and an ACE Excel 3 CN-ES column as stationary phase. The detection and quantification was performed with a SYNAPT G2-Si mass spectrometer. The calibration curves for oleacein and oleuropein aglycone were linear and quadratic, respectively. The validation was done at three levels of concentration. Relative errors from 0.1 to 10.5% and relative standard deviations lower than 9% were obtained. The method was applied to study different samples of olive oil.
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Affiliation(s)
- Antonio Luque-Muñoz
- Nuclear Magnetic Resonance Unit, Scientific Instrumentation Center, University of Granada, Granada, Spain
| | - Ruben Tapia
- Department of Organic Chemistry, University of Granada, Campus Fuentenueva s/n, Granada, Spain
| | - Ali Haidour
- Nuclear Magnetic Resonance Unit, Scientific Instrumentation Center, University of Granada, Granada, Spain
| | - Jose Justicia
- Department of Organic Chemistry, University of Granada, Campus Fuentenueva s/n, Granada, Spain
| | - Juan Manuel Cuerva
- Department of Organic Chemistry, University of Granada, Campus Fuentenueva s/n, Granada, Spain
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16
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Zhang YQ, Jakoby V, Stainer K, Schmer A, Klare S, Bauer M, Grimme S, Cuerva JM, Gansäuer A. Titelbild: Amid-substituierte Titanocene für die H-Atom-Transfer-Katalyse (Angew. Chem. 4/2016). Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yong-Qiang Zhang
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Verena Jakoby
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Katharina Stainer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Alexander Schmer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Sven Klare
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Mirko Bauer
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Deutschland
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Deutschland
| | - Juan Manuel Cuerva
- Department of Organic Chemistry, Faculty of Sciences; Universität Granada; 18071 Granada Spanien
| | - Andreas Gansäuer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
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17
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Zhang YQ, Jakoby V, Stainer K, Schmer A, Klare S, Bauer M, Grimme S, Cuerva JM, Gansäuer A. Cover Picture: Amide-Substituted Titanocenes in Hydrogen-Atom Transfer Catalysis (Angew. Chem. Int. Ed. 4/2016). Angew Chem Int Ed Engl 2016. [DOI: 10.1002/anie.201510992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yong-Qiang Zhang
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Verena Jakoby
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Katharina Stainer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Alexander Schmer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Sven Klare
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Mirko Bauer
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Germany
| | - Juan Manuel Cuerva
- Department of Organic Chemistry, Faculty of Sciences; Universität Granada; 18071 Granada Spain
| | - Andreas Gansäuer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
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18
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Zhang YQ, Jakoby V, Stainer K, Schmer A, Klare S, Bauer M, Grimme S, Cuerva JM, Gansäuer A. Amid-substituierte Titanocene für die H-Atom-Transfer-Katalyse. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509548] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yong-Qiang Zhang
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Verena Jakoby
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Katharina Stainer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Alexander Schmer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Sven Klare
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
| | - Mirko Bauer
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Deutschland
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Deutschland
| | - Juan Manuel Cuerva
- Department of Organic Chemistry, Faculty of Sciences; Universität Granada; 18071 Granada Spanien
| | - Andreas Gansäuer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Deutschland
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19
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Zhang YQ, Jakoby V, Stainer K, Schmer A, Klare S, Bauer M, Grimme S, Cuerva JM, Gansäuer A. Amide-Substituted Titanocenes in Hydrogen-Atom Transfer Catalysis. Angew Chem Int Ed Engl 2015; 55:1523-6. [DOI: 10.1002/anie.201509548] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Yong-Qiang Zhang
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Verena Jakoby
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Katharina Stainer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Alexander Schmer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Sven Klare
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
| | - Mirko Bauer
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische Chemie und Theoretische Chemie; Universität Bonn; Beringstraße 4 53115 Bonn Germany
| | - Juan Manuel Cuerva
- Department of Organic Chemistry, Faculty of Sciences; Universität Granada; 18071 Granada Spain
| | - Andreas Gansäuer
- Kekulé-Institut für Organische Chemie und Biochemie; Universität Bonn; Gerhard-Domagk-Straße 1 53121 Bonn Germany
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20
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Rosa-Fraile M, Rodríguez-Granger J, Haidour-Benamin A, Cuerva JM, Sampedro A. Granadaene: proposed structure of the group B Streptococcus polyenic pigment. Appl Environ Microbiol 2006; 72:6367-70. [PMID: 16957264 PMCID: PMC1563658 DOI: 10.1128/aem.00756-06] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The goal of this work was to determine the chemical nature of the red pigment produced by Streptococcus agalactiae, which has been thought to be a carotene. We extracted the pigment with 0.1 M KOH and purified it by column chromatography on Sephadex LH. Data from elemental analysis and mass and nuclear magnetic resonance spectra lead us to propose the structure to be that of a new ornithine rhamno-polyene with 12 conjugated double bonds, to which we have assigned the trivial name granadaene.
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Affiliation(s)
- Manuel Rosa-Fraile
- Servicio de Microbiología, Hospital Virgen de las Nieves, 18014 Granada, Spain.
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21
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Gansäuer A, Justicia J, Rosales A, Worgull D, Rinker B, Cuerva JM, Oltra JE. Transition-Metal-Catalyzed Allylic Substitution and Titanocene-Catalyzed Epoxypolyene Cyclization as a Powerful Tool for the Preparation of Terpenoids. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600389] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Gansäuer A, Narayan S, Schiffer-Ndene N, Bluhm H, Oltra JE, Cuerva JM, Rosales A, Nieger M. An improved synthesis of Kagan’s menthyl substituted titanocene and zirconocene dichloride, comparison of their crystal structures, and preliminary catalyst evaluation. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.10.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Barrero AF, Cuerva JM, Herrador MM, Valdivia MV. A New Strategy for the Synthesis of Cyclic Terpenoids Based on the Radical Opening of Acyclic Epoxypolyenes. J Org Chem 2001; 66:4074-8. [PMID: 11375041 DOI: 10.1021/jo0155207] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A F Barrero
- Institute of Biotechnology, Departamento de Química Orgánica, Facultad de Ciencias, 18071 Granada, Spain.
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24
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Barrero AF, Alvarez-Manzaneda EJ, Alvarez-Manzaneda R, Chahboun R, Meneses R, Cuerva JM, Aparicio M, Romera JL. Approach to the synthesis of antitumor quassinoids from labdane diterpenes: an efficient synthesis of a picrasane-related intermediate. Org Lett 2001; 3:647-50. [PMID: 11259027 DOI: 10.1021/ol0065322] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[structure: see text]. The tetracyclic ketal 24, a suitable intermediate for the synthesis of antitumor pentacyclic quassinoids, has been efficiently prepared from communic acids (5a-c), via methyl ketone 9. The synthetic sequence from 9 to 24 consists of 15 steps in 12% overall yield.
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Affiliation(s)
- A F Barrero
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
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Gómez-Bengoa E, Cuerva JM, Echavarren AM, Martorell G. Cationic Intermediates in the Intramolecular Insertion of Alkenes into(η3-Allyl)palladium(II) Complexes. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/anie.199707671] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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26
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Gómez-Bengoa E, Cuerva JM, Echavarren AM, Martorell G. Kationische Zwischenstufen bei der intramolekularen Insertion von Alkenen in (η3-Allyl)palladium(II)-Komplexe. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971090727] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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