Distinct cysteine sulfhydryl environments detected by analysis of Raman S-hh markers of Cys-->Ser mutant proteins.

Abstract excerpt

Very little is known about the character or functional relevance of hydrogen-bonded cysteine sulfhydryl (S-H) groups in proteins. The Raman S-H band is a unique and sensitive probe of the local S-H environment. Here, we report the use of Raman spectroscopy combined with site-specific mutagenesis to document the existence of five distinguishable hydrogen-bonded states of buried cysteine sulfhydryl groups in a...

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