Extended Data Fig. 3: MALDI-TOF-MS analysis of MtThiS-COSH.
From: Functional elucidation of TfuA in peptide backbone thioamidation
a, Top, MS spectrum of MtThiS (m/z 8,001 Da). Bottom, MS spectrum of MtThiS-COSH (thiocarboxylated C-terminus, m/z 8,017 Da). b, The same sample as above was digested with endoproteinase GluC. Shown is the spectral window surrounding the C-terminal peptide: VIRVIYGG.
