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Part II: surface-enhanced Raman spectroscopy investigation of methionine containing heterodipeptides adsorbed on colloidal silver.
Appl Spectrosc. 2004 May; 58(5):581-90.AS

Abstract

Surface-enhanced Raman scattering (SERS) spectra of methionine (Met) containing dipeptides: Met-X and X-Met, where X is: L-glycine (Gly), L-leucine (Leu), L-proline (Pro), and L-phenylalanine (Phe) are reported. Using pre-aggregated Ag colloid we obtained high-quality SERS spectra of these compounds spontaneously adsorbed on colloidal silver. Additionally, we measured Raman spectra (RS) of these heterodipeptides in a solid state as well as in acidic and basic solutions. The RS and SERS spectra of Met-X and X-Met presented in this work appear to be different. One of the most prominent and common features in the SERS spectra of all these dipeptides is a band in the 660-690 cm(-1) range that is due to the C-S stretching, v(CS), vibration of Met. This suggests that all the abovementioned compounds adsorb on the silver surface through a thioether atom. On the other hand, the SERS spectra of X-Met show clearly that not only the S atom but also the carboxylate group interact with the colloid surface as manifested by the enhancement of bands in the 920-930 and 1380-1396 cm(-1) regions. These bands are ascribed to the v(C-COO(-)) and v(sym)(COO(-)) vibrations, respectively. Additionally, a SERS spectrum of Phe-Met indicates that the interaction of the thioether atom, amine group, and aromatic side chain with the silver surface is favorable and may dictate the orientation and conformation of adsorbed peptide.

Authors+Show Affiliations

Laser Raman Laboratory, Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, 3 Ingardena Street, 30-060 Krakow, Poland.No affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Evaluation Study
Journal Article
Research Support, Non-U.S. Gov't
Validation Study

Language

eng

PubMed ID

15165335

Citation

Podstawka, Edyta, et al. "Part II: Surface-enhanced Raman Spectroscopy Investigation of Methionine Containing Heterodipeptides Adsorbed On Colloidal Silver." Applied Spectroscopy, vol. 58, no. 5, 2004, pp. 581-90.
Podstawka E, Ozaki Y, Proniewicz LM. Part II: surface-enhanced Raman spectroscopy investigation of methionine containing heterodipeptides adsorbed on colloidal silver. Appl Spectrosc. 2004;58(5):581-90.
Podstawka, E., Ozaki, Y., & Proniewicz, L. M. (2004). Part II: surface-enhanced Raman spectroscopy investigation of methionine containing heterodipeptides adsorbed on colloidal silver. Applied Spectroscopy, 58(5), 581-90.
Podstawka E, Ozaki Y, Proniewicz LM. Part II: Surface-enhanced Raman Spectroscopy Investigation of Methionine Containing Heterodipeptides Adsorbed On Colloidal Silver. Appl Spectrosc. 2004;58(5):581-90. PubMed PMID: 15165335.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Part II: surface-enhanced Raman spectroscopy investigation of methionine containing heterodipeptides adsorbed on colloidal silver. AU - Podstawka,Edyta, AU - Ozaki,Yukihiro, AU - Proniewicz,Leonard M, PY - 2004/5/29/pubmed PY - 2004/7/9/medline PY - 2004/5/29/entrez SP - 581 EP - 90 JF - Applied spectroscopy JO - Appl Spectrosc VL - 58 IS - 5 N2 - Surface-enhanced Raman scattering (SERS) spectra of methionine (Met) containing dipeptides: Met-X and X-Met, where X is: L-glycine (Gly), L-leucine (Leu), L-proline (Pro), and L-phenylalanine (Phe) are reported. Using pre-aggregated Ag colloid we obtained high-quality SERS spectra of these compounds spontaneously adsorbed on colloidal silver. Additionally, we measured Raman spectra (RS) of these heterodipeptides in a solid state as well as in acidic and basic solutions. The RS and SERS spectra of Met-X and X-Met presented in this work appear to be different. One of the most prominent and common features in the SERS spectra of all these dipeptides is a band in the 660-690 cm(-1) range that is due to the C-S stretching, v(CS), vibration of Met. This suggests that all the abovementioned compounds adsorb on the silver surface through a thioether atom. On the other hand, the SERS spectra of X-Met show clearly that not only the S atom but also the carboxylate group interact with the colloid surface as manifested by the enhancement of bands in the 920-930 and 1380-1396 cm(-1) regions. These bands are ascribed to the v(C-COO(-)) and v(sym)(COO(-)) vibrations, respectively. Additionally, a SERS spectrum of Phe-Met indicates that the interaction of the thioether atom, amine group, and aromatic side chain with the silver surface is favorable and may dictate the orientation and conformation of adsorbed peptide. SN - 0003-7028 UR - https://www.unboundmedicine.com/medline/citation/15165335/Part_II:_surface_enhanced_Raman_spectroscopy_investigation_of_methionine_containing_heterodipeptides_adsorbed_on_colloidal_silver_ L2 - https://journals.sagepub.com/doi/10.1366/000370204774103417?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -