Gas-phase peptide sequencing by TEMPO-mediated radical generation.

Abstract

Collisional activation of 2-[(2,2,6,6-tetramethylpiperidin-1-yloxy)methyl]benzoic acid (TEMPO-Bz)-conjugated peptide cations, prepared by attaching a TEMPO-derived precursor 1 to an N-terminal amino group or a lysine side chain, resulted in the formation of radical species. The subsequent tandem mass spectrometry on the radical cations exhibited odd… (More)
DOI: 10.1039/b904115j

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