| Part I: surface-enhanced Raman spectroscopy investigation of amino acids and their homodipeptides adsorbed on colloidal silver. | |
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MedLine Citation:
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PMID: 15165334 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Surface-enhanced Raman scattering spectra (SERS) were measured for various amino acids: L-methionine (Met), L-cysteine (Cys), Lglycine (Gly), L-leucine (Leu), L-phenylalanine (Phe), and L-proline (Pro) and their homodipeptides (Met-Met, Cys-Cys, Gly-Gly, LeuLeu, Phe-Phe, and Pro-Pro) in silver colloidal solutions. The geometry and orientation of the amino acids or dipeptides on the silver surface, and their specific interaction with the surface, were deducted by detailed spectral analysis of the SERS spectra. This analysis has allowed us to propose the particular surface geometry of amino acids or dipeptides and also implied that C-C bonds were almost parallel to the surface, as evidenced by the absence of marker bands in the skeletal C-C stretching region of the spectra. Additionally, using "time-dependent" SERS measurements we solved an existing controversy regarding the binding specificity of Gly-Gly on the silver surface. |
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Authors:
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Edyta Podstawka; Yukihiro Ozaki; Leonard M Proniewicz |
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Publication Detail:
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Type: Comparative Study; Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't; Validation Studies |
Journal Detail:
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Title: Applied spectroscopy Volume: 58 ISSN: 0003-7028 ISO Abbreviation: Appl Spectrosc Publication Date: 2004 May |
Date Detail:
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Created Date: 2004-05-28 Completed Date: 2004-07-08 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0372406 Medline TA: Appl Spectrosc Country: United States |
Other Details:
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Languages: eng Pagination: 570-80 Citation Subset: IM |
Affiliation:
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Laser Raman Laboratory, Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, 3 Ingardena Street, 30-060 Krakow, Poland. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adsorption Amino Acids / analysis*, chemistry* Binding Sites Colloids / chemistry* Dimerization Dipeptides / analysis*, chemistry* Protein Binding Protein Conformation Reproducibility of Results Sensitivity and Specificity Silver / chemistry* Spectrum Analysis, Raman / methods* Surface Plasmon Resonance / methods* |
| Chemical | |
Reg. No./Substance:
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0/Amino Acids; 0/Colloids; 0/Dipeptides; 7440-22-4/Silver |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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