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Chatziefthimiou SD, Inclán M, Giastas P, Papakyriakou A, Yannakopoulou K, Mavridis IM. Molecular recognition of N-acetyltryptophan enantiomers by β-cyclodextrin. Beilstein J Org Chem 2017; 13:1572-1582. [PMID: 28904606 PMCID: PMC5564276 DOI: 10.3762/bjoc.13.157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 07/18/2017] [Indexed: 01/08/2023] Open
Abstract
The enantioselectivity of β-cyclodextrin (β-CD) towards L- and D-N-acetyltryptophan (NAcTrp) has been studied in aqueous solution and the crystalline state. NMR studies in solution show that β-CD forms complexes of very similar but not identical geometry with both L- and D-NAcTrp and exhibits stronger binding with L-NAcTrp. In the crystalline state, only β-CD–L-NAcTrp crystallizes readily from aqueous solutions as a dimeric complex (two hosts enclosing two guest molecules). In contrast, crystals of the complex β-CD–D-NAcTrp were never obtained, although numerous conditions were tried. In aqueous solution, the orientation of the guest in both complexes is different than in the β-CD–L-NAcTrp complex in the crystal. Overall, the study shows that subtle differences observed between the β-CD–L,D-NAcTrp complexes in aqueous solution are magnified at the onset of crystallization, as a consequence of accumulation of many soft host–guest interactions and of the imposed crystallographic order, thus resulting in very dissimilar propensity of each enantiomer to produce crystals with β-CD.
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Affiliation(s)
- Spyros D Chatziefthimiou
- Institute of Nanoscience & Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou E' & Neapoleos 27, 15310 Aghia Paraskevi Attikis, Greece
| | - Mario Inclán
- Institute of Nanoscience & Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou E' & Neapoleos 27, 15310 Aghia Paraskevi Attikis, Greece
| | - Petros Giastas
- Institute of Nanoscience & Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou E' & Neapoleos 27, 15310 Aghia Paraskevi Attikis, Greece
| | - Athanasios Papakyriakou
- Institute of Nanoscience & Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou E' & Neapoleos 27, 15310 Aghia Paraskevi Attikis, Greece
| | - Konstantina Yannakopoulou
- Institute of Nanoscience & Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou E' & Neapoleos 27, 15310 Aghia Paraskevi Attikis, Greece
| | - Irene M Mavridis
- Institute of Nanoscience & Nanotechnology, National Center for Scientific Research "Demokritos", Patriarchou Gregoriou E' & Neapoleos 27, 15310 Aghia Paraskevi Attikis, Greece
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Manivannan C, Vijay Solomon R, Venuvanalingam P, Renganathan R. Studies on the inclusion behavior of 9-Aminoacridine into cyclodextrins: spectroscopic and theoretical evidences. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 103:18-24. [PMID: 23257326 DOI: 10.1016/j.saa.2012.11.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 10/28/2012] [Accepted: 11/05/2012] [Indexed: 06/01/2023]
Abstract
9-Aminoacridine (9-AA) is an important attractive pharmaceutical drug employed as chemotheraptic agent for wound dressings. However, 9-AA possesses limited solubility and rapid metabolic decomposition renders this potential drug to limit its applications. Here we propose cyclodextrins (CDs) as a drug carrier to improve the bioavailability, solubility of 9-AA. The interaction between 9-AA and CDs (α-CD and β-CD) has been studied using UV-Vis absorption, steady state time resolved fluorescence, (1)H NMR and FT-IR spectroscopy techniques. The spectroscopic measurements show that 9-AA does not form stable complex with α-CD and also confirmed by DFT calculations. On the other hand, 9-AA forms inclusion complex with β-CD in a 1:1 stoichiometry ratio. Our DFT results suggest that 9-AA stabilizes inside the CD environment through hydrogen bonding that has unambiguously confirmed by AIM analysis. Thus our studies provide a useful insights in the development of Aminoacridine based drugs & its delivery through a suitable carrier like CDs.
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Affiliation(s)
- C Manivannan
- School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, India
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3
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Determination of the Absolute Configuration of Aegelinol by Crystallization of Its Inclusion Complex with β-Cyclodextrin. CRYSTALS 2012. [DOI: 10.3390/cryst2041441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Aree T, Arunchai R, Koonrugsa N, Intasiri A. Fluorometric and theoretical studies on inclusion complexes of β-cyclodextrin and D-, L-phenylalanine. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 96:736-743. [PMID: 22885088 DOI: 10.1016/j.saa.2012.07.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 06/28/2012] [Accepted: 07/11/2012] [Indexed: 06/01/2023]
Abstract
Inclusion complexes of β-cyclodextrin (β-CD) with L- and D-phenylalanine (Phe) have been characterized in solution by fluorometry and in gas phase by semiempirical PM3 calculations. The unimolar stoichiometric ratio of both β-CD-L-Phe and β-CD-D-Phe complexes and the stability constants (K) were deduced from fluorometric titrations. The β-CD-L-Phe complex is more stable than the β-CD-D-Phe complex as indicated by the larger K values, 21.1 vs. 6.86 M(-1). This is consistent with the stabilization energies (ΔE(stb)) and inclusion geometries obtained from PM3 calculations. The β-CD-L-Phe complex with L-Phe residing in the central β-CD cavity and pointing its COOH group downwards to the O6 end has ΔE(stb)=-62.7 kJ mol(-1), whereas the β-CD-D-Phe complex with D-Phe placing at 3Å beneath the β-CD O4-plane and pointing its COOH group upwards to the O2/O3 end has ΔE(stb)=-53.3 kJ mol(-1). The unison of host-guest intermolecular hydrogen bonds, hydrophobic interactions and molecular deformations plays an essential role in forming and stabilizing the inclusion complexes. Our results show that the β-CD-L-Phe and β-CD-D-Phe inclusion complexes are relatively stable and differentiable, suggesting the applications of CDs in foods and drugs.
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Affiliation(s)
- Thammarat Aree
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand.
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5
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Cheng X, Lu Z, Li Y, Wang Q, Lu C, Meng Q. An interesting molecular-assembly of β-cyclodextrin pipelines with embedded hydrophilic nickel maleonitriledithiolate. Dalton Trans 2011; 40:11788-94. [DOI: 10.1039/c1dt10532a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Ghosh K, Sarkar T, Chattopadhyay AP. Anthracene appended pyridinium amide-urea conjugate in selective fluorometric sensing of L-N-acetylvaline salt. Beilstein J Org Chem 2010; 6:1211-8. [PMID: 21283560 PMCID: PMC3028924 DOI: 10.3762/bjoc.6.139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2010] [Accepted: 11/16/2010] [Indexed: 11/23/2022] Open
Abstract
A new anthracene labeled pyridinium amide-urea conjugate 1 has been designed and synthesized. The receptor shows a different fluorometric response with L-N-acetylvaline and L-N-acetylalanine salts in CH₃CN in contrast to the other salts of L-N-acetyl α-amino acids and (S)-α-hydroxy acids studied. Upon complexation of the tetrabutylammonium salt of L-N-acetylvaline, the emission of 1 increases accompanied by the formation of a new band at higher wavelength and this characteristic change distinguishes it from other anionic substrates studied. The binding interaction has been studied by ¹H NMR, fluorescence and UV titration experiments.
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Affiliation(s)
- Kumaresh Ghosh
- Department of Chemistry, University of Kalyani, Kalyani-741235, India, Fax +91-33-25828282.
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7
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Cheng X, Wang Q, Lu C, Meng Q. Watching the Conformational Changes of Maleonitriledithiolate Chromophores Inside the Inclusion Complexes with Cyclodextrins: Probed by ICD Spectra and DFT Calculations. J Phys Chem A 2010; 114:7230-40. [DOI: 10.1021/jp103118z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xian Cheng
- Nanjing National Laboratory of Microstructures, Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Qi Wang
- Nanjing National Laboratory of Microstructures, Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Changsheng Lu
- Nanjing National Laboratory of Microstructures, Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
| | - Qingjin Meng
- Nanjing National Laboratory of Microstructures, Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P.R. China
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8
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Structural and physical–chemical evaluation of Bradykinin Potentiating Peptide and its high soluble supramolecular complex. J INCL PHENOM MACRO 2010. [DOI: 10.1007/s10847-009-9723-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Lien N, Telford J. An investigation of the inclusion complex of cyclomaltoheptaose (β-cyclodextrin) with N-methylanthranilic acid in the solid state. Carbohydr Res 2009; 344:2606-8. [DOI: 10.1016/j.carres.2009.09.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Revised: 09/14/2009] [Accepted: 09/16/2009] [Indexed: 10/20/2022]
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10
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Zhao YL, Benítez D, Yoon I, Stoddart J. Inclusion Behavior of β-Cyclodextrin with Bipyridine Molecules: Factors Governing Host-Guest Inclusion Geometries. Chem Asian J 2009; 4:446-56. [DOI: 10.1002/asia.200800373] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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11
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Influence of the substituent on amide nitrogen atom of N-acetyl tyrosine on interactions with β-cyclodextrin. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.09.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Xu GC, Ding YJ, Okamura TA, Huang YQ, Liu GX, Sun WY, Ueyama N. Structure diversity and reversible anion exchange properties of cadmium(ii) complexes with 1,3,5-tris(imidazol-1-ylmethyl)benzene: counteranion-directed flexible ligand conformational variation. CrystEngComm 2008. [DOI: 10.1039/b803236j] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Fan Z, Diao CH, Guo MJ, Du RJ, Song YF, Jing ZL, Yu M. An investigation of the inclusion complex of β-cyclodextrin with p-nitrobenzoic acid in the solid state. Carbohydr Res 2007; 342:2500-3. [PMID: 17669379 DOI: 10.1016/j.carres.2007.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2007] [Revised: 07/09/2007] [Accepted: 07/09/2007] [Indexed: 11/20/2022]
Abstract
The weak inclusion complex of cyclomaltoheptaose (beta-cyclodextrin, betaCD) with p-nitrobenzoic acid was investigated in the solid state. Crystallography shows that two betaCD molecules co-crystallize with two p-nitrobenzoic acids and 28.5 water molecules [2(C(42)H(70)O(35))x2(C(7)H(5)NO(4))x28.5H(2)O] in the triclinic system.
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Affiliation(s)
- Zhi Fan
- College of Sciences, Tianjin University of Science and Technology, Tianjin 300222, PR China.
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14
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Waibel B, Scheiber J, Meier C, Hammitzsch M, Baumann K, Scriba GKE, Holzgrabe U. Comparison of Cyclodextrin-Dipeptide Inclusion Complexes in the Absence and Presence of Urea by Means of Capillary Electrophoresis, Nuclear Magnetic Resonance and Molecular Modeling. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700052] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Xu Y, McCarroll ME. Chiral recognition of 1,1′-binaphthyl-2,2′-diyl hydrogenphosphate using fluorescence anisotropy. J Photochem Photobiol A Chem 2007. [DOI: 10.1016/j.jphotochem.2006.09.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Zhou YH, Fu H, Zhao WX, Tong ML, Su CY, Sun H, Ji LN, Mao ZW. An Effective Metallohydrolase Model with a Supramolecular Environment: Structures, Properties, and Activities. Chemistry 2007; 13:2402-9. [PMID: 17163565 DOI: 10.1002/chem.200601302] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A supramolecular inclusion complex, [Zn(L1)(H2O)2(beta-CD)](ClO4)2.9.5 H2O (1) was synthesized and characterized structurally and its first-order active species for hydrolysis of esters, [Zn(L1)(H2O)(OH)(beta-CD)](ClO4) (2), was isolated (L1=4-(4'-tert-butylbenzyl)diethylenetriamine; beta-CD=beta-cyclodextrin). The apparent inclusion stability constant of the host and the guest measured in aqueous solution was (5.91+/-0.03)x10(3) for 1. The measured values of the first- and second-order pK(a) values of coordinated water molecules were 8.20+/-0.08 and 10.44+/-0.08, respectively, and were assigned to water molecules occupying the plane and remaining axial positions in a distorted trigonal bipyramid of the [Zn(L1)(H2O)2(beta-CD)]2+ sphere according to the structural analysis of [Zn(L2)(H2O)}2(mu-OH)](ClO4)3 (3) (L2=4-benzyldiethylenetriamine). p-Nitrophenyl acetate (pNA) hydrolysis catalyzed by 1 at pH 7.5-9.1 and 25.0+/-0.1 degrees C exhibited a first-order reaction with various concentrations of pNA and 1, but the pH profile did not indicate saturated kinetic behavior. Second-order rate constants of 0.59 and 24.0 M(-1) s(-1) were calculated for [Zn(L1)(H2O)(OH)(beta-CD)]+ and [Zn(L1)(OH)2(beta-CD)], respectively; the latter exhibited a potent catalytic activity relative to the reported mononuclear and polynuclear Zn(II) species.
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Affiliation(s)
- Ying-Hua Zhou
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275 (People's Republic of China)
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Katoh M, Kohmoto S, Kishikawa K. A hexagonal columnar packing structure of C7 symmetric supramolecules: a superstructure of a 2:3 complex of heptakis-(6-O-tert-butyldimethylsilyl)-β-cyclodextrin and ethyl acetate. CRYSTAL RESEARCH AND TECHNOLOGY 2006. [DOI: 10.1002/crat.200610757] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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18
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Fan Z, Diao CH, Yu M, Jing ZL, Chen X, Deng QL. An Investigation of the Inclusion Complex of β-Cyclodextrin with 8-Nitro-Quinoline in the Solid State. Supramol Chem 2006. [DOI: 10.1080/10610270500245766] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Zhi Fan
- a College of Sciences, Tianjin University of Science and Technology , Tianjin, 300222, P. R. China
| | - Chun-Hua Diao
- a College of Sciences, Tianjin University of Science and Technology , Tianjin, 300222, P. R. China
| | - Ming Yu
- a College of Sciences, Tianjin University of Science and Technology , Tianjin, 300222, P. R. China
| | - Zuo-Liang Jing
- a College of Sciences, Tianjin University of Science and Technology , Tianjin, 300222, P. R. China
| | - Xin Chen
- a College of Sciences, Tianjin University of Science and Technology , Tianjin, 300222, P. R. China
| | - Qi-Liang Deng
- a College of Sciences, Tianjin University of Science and Technology , Tianjin, 300222, P. R. China
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Preparation and Characterization of the Solid Inclusion Compounds of α-, β-Cyclodextrin with Phenylalanine (D-, L- and DL-Phe) and Tryptophan (D-, L- and DL-Trp). J INCL PHENOM MACRO 2006. [DOI: 10.1007/s10847-005-7970-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Yi Z, Qasim MA, Qasim S, Warrington TL, Laskowski M. Ring-Toss: Capping highly exposed tyrosyl or tryptophyl residues in proteins with beta-cyclodextrin. Biochim Biophys Acta Gen Subj 2005; 1760:372-9. [PMID: 16417973 DOI: 10.1016/j.bbagen.2005.11.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2005] [Revised: 11/14/2005] [Accepted: 11/17/2005] [Indexed: 11/27/2022]
Abstract
We have used UV difference spectroscopy and fluorescence spectroscopy to study the perturbation by beta-cyclodextrin of tyrosyl or tryptophyl residues located at each of the 10 variable consensus contact positions in the third domain of turkey ovomucoid. The goal was to monitor the accessibility of the side chain rings of these residues when located at these positions. The results indicated that the tyrosyl or tryptophyl rings are most highly exposed when located in the P1 position followed by the P4 position. It was possible to determine the association constants for beta-cyclodextrin binding at these positions. When located at the P2, P5, P6 and P3' positions, the rings of the tyrosyl or tryptophyl residues were exposed but less so than at the P1 or P4 positions. By contrast, when located at the P1', P2', P14' and P18' positions, the tyrosyl or tryptophyl residues were insufficiently exposed to be perturbed by beta-cyclodextrin, although they reacted positively to dimethyl sulfoxide solvent perturbation. These findings indicate that beta-cyclodextrin perturbation provides a convenient way to detect highly exposed tyrosyls or tryptophyls in proteins. Furthermore, we evaluated the ability of beta-cyclodextrin to inhibit the interaction of turkey ovomucoid third domain variants with different P1 residues. The results showed that the presence of beta-cyclodextrin had little effect on the association constant when the P1 residue was a glycyl residue, but greatly decreased the association constant when the P1 residue was a tyrosyl or tryptophyl residue. Thus, beta-cyclodextrin may be used to selectively modulate the interaction between proteinase inhibitors and their cognate enzymes.
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Affiliation(s)
- Zhengping Yi
- Department of Chemistry, 560 Oval Drive, Purdue University, West Lafayette, IN 47907, USA.
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21
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Mrozek J, Banecki B, Karolczak J, Wiczk W. Influence of the separation of the charged groups and aromatic ring on interaction of tyrosine and phenylalanine analogues and derivatives with β-cyclodextrin. Biophys Chem 2005; 116:237-50. [PMID: 15896899 DOI: 10.1016/j.bpc.2005.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2005] [Revised: 04/12/2005] [Accepted: 04/12/2005] [Indexed: 11/19/2022]
Abstract
Interactions of tyrosine and phenylalanine analogues with beta-cyclodextrin have been examined in terms of structural features of the ligand such as the separation of the charged amino group and aromatic ring, the presence of additional functional group attached to the amino or phenyl ring, and the presence of a charge on amino or carboxyl group, and steric effects using steady-state and time-resolved fluorescence spectroscopy and microcalorimetry. The studied aromatic amino acids possess low binding constant to beta-cyclodextrin, diversified with respect to the presence or absence of a substituent in para position of the phenyl ring. However, calculated, based on the global analysis of the fluorescence intensity decays, binding constants do not allow to estimate unequivocally the influence of the distance between the charged groups and phenol/phenyl ring on the inclusion complex stability because of their low diversification.
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Affiliation(s)
- Justyna Mrozek
- Faculty of Chemistry, University of Gdańsk, Sobieskiego 18, 80-952 Gdańsk, Poland
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22
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Liu Y, Yang YW, Chen Y, Ding F. Efficient fluorescent sensors of oligopeptides by dithiobis(2-benzoylamide)-bridged bis(β-cyclodextrin)s: structure in solution, binding behavior, and thermodynamic origin. Bioorg Med Chem 2005; 13:963-71. [PMID: 15670904 DOI: 10.1016/j.bmc.2004.11.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2004] [Revised: 11/22/2004] [Accepted: 11/23/2004] [Indexed: 11/15/2022]
Abstract
Two 6,6'-bis(beta-cyclodextrin)s linked by 2,2'-dithiobis[2-(benzoylamino)ethyleneamino] and 2,2'-dithiobis[2-(benzoylamino)diethylenetriamino] bridges (1 and 2) have been synthesized as cooperative multipoint recognition receptor models for non-aromatic oligopeptides. Their structures in solution and inclusion complexation mechanism are comprehensively investigated by means of circular dichroism, 2D NMR spectra and temperature-dependent fluorescence titrations. The results show that the cooperative 'host-linker-guest' binding mode and the extensive desolvation effect jointly contribute to the guest-induced fluorescence enhancement of bis(beta-cyclodextrin)s. Further examinations on the binding behavior of hosts 1-2 with a series of di- and tri-peptides demonstrate that bis(beta-cyclodextrin) 1 can recognize not only the size/shape of oligopeptides but also the dipeptide sequence, giving an exciting residue selectivity up to 37.5 for Gly-Gly-Gly/Glu-Glu pair and a high sequence selectivity up to 5.0 for Gly-Leu/Leu-Gly pair. These fairly good selectivities are discussed from the viewpoint of cooperative binding, multiple recognition and induced-fit interactions between host and guest.
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Affiliation(s)
- Yu Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, PR China.
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Liu Y, Zhao YL, Chen Y, Guo DS. Assembly behavior of inclusion complexes of β-cyclodextrin with 4-hydroxyazobenzene and 4-aminoazobenzene. Org Biomol Chem 2005; 3:584-91. [PMID: 15703792 DOI: 10.1039/b415946b] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To further reveal the factors governing the supramolecular assembly of beta-cyclodextrin (beta-CD) inclusion complexes, two aggregates (1 and 2) were prepared from the inclusion complexes of beta-CD with 4-hydroxyazobenzene and 4-aminoazobenzene, respectively, and their binding behavior were investigated by means of X-ray analysis, UV-vis, NMR, and circular dichroism spectra in both solution and the solid state. The obtained results indicated that the beta-CD/4-hydroxyazobenzene complex 1 could form head-to-head dimers (triclinic system, space group P1) in the solid state, which were further self-assembled to a linear supramolecular architecture by the intra- and interdimer hydrogen bond interactions as well as the intradimer pi-pi interactions. However, when the included guest 4-hydroxyazobenzene was switched to a 4-aminoazobenzene, the resultant beta-CD/4-aminoazobenzene complex 2 (monoclinic system, space group P2(1)) could be self-assembled to a wave-type supramolecular aggregate under similar conditions. Furthermore, the combination of crystallographic and spectral investigations jointly revealed the inclusion complexation geometry of beta-CD with 4-hydroxyazobenzene and 4-aminoazobenzene in both solution and the solid state, which demonstrated that the disparity of substituents in the azobenzenes played an important role in the inclusion complexation and molecular assembly, affecting not only the structural features of aggregates but also the binding abilities of azobenzenes with beta-CD.
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Affiliation(s)
- Yu Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China.
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Convergent Synthesis of Macrocycles Composed of 5-Amino-2H-1,2,4-thiadiazolin-3-one or 5-Amino-2H-1,2,4-thiadiazoline-3-thione and 1,3-Benzenedimethanethiol. B KOREAN CHEM SOC 2004. [DOI: 10.5012/bkcs.2004.25.10.1581] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Choi Y, Jung S. Molecular dynamics (MD) simulations for the prediction of chiral discrimination of N-acetylphenylalanine enantiomers by cyclomaltoheptaose (β-cyclodextrin, β-CD) based on the MM–PBSA (molecular mechanics–Poisson–Boltzmann surface area) approach. Carbohydr Res 2004; 339:1961-6. [PMID: 15261589 DOI: 10.1016/j.carres.2004.05.026] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2004] [Accepted: 05/26/2004] [Indexed: 11/22/2022]
Abstract
Molecular dynamics (MD) simulations were performed for the prediction of chiral discrimination of N-acetylphenylalanine enantiomers by cyclomaltoheptaose (beta-cyclodextrin, beta-CD). Binding free energies and various conformational properties were obtained using by the MM-PBSA (molecular mechanics Poisson-Boltzmann/surface area) approach. The calculated relative difference (DeltaDeltabinding) of binding free energy was in fine agreement with the experimentally determined value. The difference of rotameric distributions of guest N-acetylphenylalanine enantiomers complexed with the host, beta-CD, was observed after the conformational analyses, suggesting that the conformational changes of guest captured within host cavity would be a decisive factor for enantiodifferentiation at a molecular level.
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Affiliation(s)
- Youngjin Choi
- Department of Microbial Engineering and Bio/Molecular Informatics Center, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, South Korea
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Liu Y, Chen GS, Zhang HY, Song HB, Ding F. Interaction between β-cyclodextrin and 1,10-phenanthroline: uncommon 2:3 inclusion complex in the solid state. Carbohydr Res 2004; 339:1649-54. [PMID: 15183740 DOI: 10.1016/j.carres.2004.04.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2004] [Revised: 03/23/2004] [Accepted: 04/15/2004] [Indexed: 11/22/2022]
Abstract
The crystallographic structure of the complex formed by beta-cyclodextrin with 1,10-phenanthroline has been studied by X-ray diffraction. The result shows that the complex adopts an uncommon 2:3 stoichiometry in solid state, that is, every complex unit contains three 1,10-phenanthroline molecules and two beta-cyclodextrin molecules, where two 1,10-phenanthroline molecules individually occupy two cyclodextrin cavities, and the third guest molecule is located in the interstitial space between two head-to-head cyclodextrin molecules. The intermolecular hydrogen bonds between the adjacent complex units further link these individual monomers to a channel-type assembly. Furthermore, 1H and 2D NMR spectroscopy has been employed to investigate the inclusion behavior between the host beta-cyclodextrin and guest 1,10-phenanthroline in aqueous solution.
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Affiliation(s)
- Yu Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, PR China.
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Liu Y, Yang YW, Song Y, Zhang HY, Ding F, Wada T, Inoue Y. Residue- and Sequence-Selective Binding of Nonaromatic Dipeptides by Bis(β-cyclodextrin) with a Functional Tether. Chembiochem 2004; 5:868-71. [PMID: 15174172 DOI: 10.1002/cbic.200300770] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yu Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P R China.
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28
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Liu Y, Fan Z, Zhang HY, Diao CH. Binding ability and self-assembly behavior of linear polymeric supramolecules formed by modified beta-cyclodextrin. Org Lett 2003; 5:251-4. [PMID: 12556164 DOI: 10.1021/ol027146i] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[structure: see text] The binding ability and self-assembly behavior of molecular interpenetration by newly synthesized mono[6-O-(4-formyl-phenyl)-beta-cyclodextrin has been investigated, revealing the formation mechanism of modified cyclodextrin from solution aggregation to solid linear polymeric supramolecules.
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Affiliation(s)
- Yu Liu
- Department of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P R China.
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Alexander JM, Clark JL, Brett TJ, Stezowski JJ. Chiral discrimination in cyclodextrin complexes of amino acid derivatives: beta-cyclodextrin/N-acetyl-L-phenylalanine and N-acetyl-D-phenylalanine complexes. Proc Natl Acad Sci U S A 2002; 99:5115-20. [PMID: 11943858 PMCID: PMC122731 DOI: 10.1073/pnas.072647599] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In a systematic study of molecular recognition of amino acid derivatives in solid-state beta-cyclodextrin (beta-CD) complexes, we have determined crystal structures for complexes of beta-cyclodextrin/N-acetyl-L-phenylalanine at 298 and 20 K and for N-acetyl-D-phenylalanine at 298 K. The crystal structures for the N-acetyl-L-phenylalanine complex present disordered inclusion complexes for which the distribution of guest molecules at room temperature is not resolvable; however, they can be located with considerable confidence at low temperature. In contrast, the complex with N-acetyl-D-phenylalanine is well ordered at room temperature. The latter complex presents an example of a complex in this series in which a water molecule is included deeply in the hydrophobic torus of the extended dimer host. In an effort to understand the mechanisms of molecular recognition giving rise to the dramatic differences in crystallographic order in these crystal structures, we have examined the intermolecular interactions in detail and have examined insertion of the enantiomer of the D-complex into the chiral beta-CD complex crystal lattice.
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