Literature DB >> 15779931

Probing alpha-helical and beta-sheet structures of peptides at solid/liquid interfaces with SFG.

Xiaoyun Chen1, Jie Wang, Jason J Sniadecki, Mark A Even, Zhan Chen.   

Abstract

We demonstrated that sum frequency generation (SFG) vibrational spectroscopy can distinguish different secondary structures of proteins or peptides adsorbed at solid/liquid interfaces. The SFG spectrum for tachyplesin I at the polystyrene (PS)/solution interface has a fingerprint peak corresponding to the B1/B3 mode of the antiparallel beta-sheet. This peak disappeared upon the addition of dithiothreitol, which can disrupt the beta-sheet structure. The SFG spectrum indicative of the MSI594 alpha-helical structure was observed at the PS/MSI594 solution interface. This research validates SFG as a powerful technique for revealing detailed secondary structures of interfacial proteins and peptides.

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Year:  2005        PMID： 15779931     DOI： 10.1021/la050048w

Source DB:  PubMed          Journal:  Langmuir        ISSN： 0743-7463            Impact factor:   3.882


  32 in total

1.  Molecular interactions between cell penetrating peptide Pep-1 and model cell membranes.

Authors:  Bei Ding; Zhan Chen
Journal:  J Phys Chem B       Date:  2012-02-17       Impact factor: 2.991

2.  Probing the orientation and conformation of alpha-helix and beta-strand model peptides on self-assembled monolayers using sum frequency generation and NEXAFS spectroscopy.

Authors:  Tobias Weidner; Julia S Apte; Lara J Gamble; David G Castner
Journal:  Langmuir       Date:  2010-03-02       Impact factor: 3.882

3.  Real-time structural investigation of a lipid bilayer during its interaction with melittin using sum frequency generation vibrational spectroscopy.

Authors:  Xiaoyun Chen; Jie Wang; Cornelius B Kristalyn; Zhan Chen
Journal:  Biophys J       Date:  2007-05-04       Impact factor: 4.033

4.  Nonlinear Optical Methods for Characterization of Molecular Structure and Surface Chemistry.

Authors:  Patrik K Johansson; Lars Schmüser; David G Castner
Journal:  Top Catal       Date:  2018-04-17       Impact factor: 2.910

5.  Lipid Fluid-Gel Phase Transition Induced Alamethicin Orientational Change Probed by Sum Frequency Generation Vibrational Spectroscopy.

Authors:  Pei Yang; Fu-Gen Wu; Zhan Chen
Journal:  J Phys Chem C Nanomater Interfaces       Date:  2013-08-20       Impact factor: 4.126

6.  Observing a model ion channel gating action in model cell membranes in real time in situ: membrane potential change induced alamethicin orientation change.

Authors:  Shuji Ye; Hongchun Li; Feng Wei; Joshua Jasensky; Andrew P Boughton; Pei Yang; Zhan Chen
Journal:  J Am Chem Soc       Date:  2012-04-03       Impact factor: 15.419

7.  Sum frequency generation and solid-state NMR study of the structure, orientation, and dynamics of polystyrene-adsorbed peptides.

Authors:  Tobias Weidner; Nicholas F Breen; Kun Li; Gary P Drobny; David G Castner
Journal:  Proc Natl Acad Sci U S A       Date:  2010-07-13       Impact factor: 11.205

8.  Modeling the SHG activities of diverse protein crystals.

Authors:  Levi M Haupert; Emma L DeWalt; Garth J Simpson
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2012-10-18

9.  Orientation difference of chemically immobilized and physically adsorbed biological molecules on polymers detected at the solid/liquid interfaces in situ.

Authors:  Shuji Ye; Khoi Tan Nguyen; Andrew P Boughton; Charlene M Mello; Zhan Chen
Journal:  Langmuir       Date:  2010-05-04       Impact factor: 3.882

10.  Elucidation of molecular structures at buried polymer interfaces and biological interfaces using sum frequency generation vibrational spectroscopy.

Authors:  Chi Zhang; John Myers; Zhan Chen
Journal:  Soft Matter       Date:  2013       Impact factor: 3.679
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