Extended Data Fig. 4: High-resolution and tandem MS of the MtThiS-COSH C-terminal fragment.
From: Functional elucidation of TfuA in peptide backbone thioamidation
a, High-resolution broadband spectrum of the C-terminal GluC peptide fragment of MtThiS-COSH. b, m/z 892.51 was subjected to CID (collision-induced dissociation) with assigned ions indicated in tabular form. c, Tandem mass spectrum (MS/MS) confirming the location of the +16 Da mass change to the C-terminus. CID also promotes the formal loss of H2S (obsv. Δm/z 33.9884 Da; calc. Δm/z 33.9877 Da) from the parent ion.
