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. Author manuscript; available in PMC: 2018 Oct 18.
Published in final edited form as: Chembiochem. 2017 Sep 1;18(20):2028–2032. doi: 10.1002/cbic.201700137

Scheme 1. Nitroso-directed methods for labeling endogenous S-sulfinated cysteine residues in proteins.

Scheme 1

(A) Aryl-nitroso probes react with protein sulfinic acids to form a stable benzioxazolone ring. (B) S-nitrosoglutathione probes react with protein sulfinic acids to form a thiosulfonate linkage.