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  • Title: Early sum frequency generation vibrational spectroscopic studies on peptides and proteins at interfaces.
    Author: Chen Z.
    Journal: Biointerphases; 2022 May 06; 17(3):031202. PubMed ID: 35525602.
    Abstract:
    This paper summarizes the early research results on studying proteins and peptides at interfaces using sum frequency generation (SFG) vibrational spectroscopy. SFG studies in the C-H stretching frequency region to examine the protein side-chain behavior and in the amide I frequency region to investigate the orientation and conformation of interfacial peptides/proteins are presented. The early chiral SFG research and SFG isotope labeling studies on interfacial peptides/proteins are also discussed. These early SFG studies demonstrate the feasibility of using SFG to elucidate interfacial molecular structures of peptides and proteins in situ, which built a foundation for later SFG investigations on peptides and proteins at interfaces.
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