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Vibrational sum-frequency generation (SFG) microscopy is a highly sensitive and selective optical imaging technique capable of retrieving information on the molecular structure of proteins. In this study, we determined the achiral tensor elements Х_ijk^((2)) associated with the the symmetric and asymmetric methylene (CH2) stretching modes of collagen type I through polarization-sensitive SFG measurements, and compared the results with computational modeling based on the crystal structure information from the Protein Data Bank. These findings contribute to our understanding of protein structure and pave the way to predict proteins' non-linear optical properties directly from their crystal structure.
Conference Presentation
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Yryx Luna Palacios,Israel Rocha Mendoza,David Knez,Salile Khandani,Evan P. Garcia, andEric O. Potma
"Sum-frequency generation and the CH stretching modes in collagen type I", Proc. SPIE PC12839, Biomedical Vibrational Spectroscopy 2024: Advances in Research and Industry, PC128390M (13 March 2024); https://doi.org/10.1117/12.3003418
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Yryx Luna Palacios, Israel Rocha Mendoza, David Knez, Salile Khandani, Evan P. Garcia, Eric O. Potma, "Sum-frequency generation and the CH stretching modes in collagen type I," Proc. SPIE PC12839, Biomedical Vibrational Spectroscopy 2024: Advances in Research and Industry, PC128390M (13 March 2024); https://doi.org/10.1117/12.3003418