Skip to main content
. Author manuscript; available in PMC: 2015 Mar 18.
Published in final edited form as: FEBS Lett. 2014 Feb 11;588(6):873–877. doi: 10.1016/j.febslet.2014.01.065

Fig. 2.

Fig. 2

Identification of sulfur modifications of Mmp1356 by LC-MS/MS. (A) Two precursor ions with a mass difference of 32 Da were observed for the tryptic peptide 136NLTMNPCSFCGVIR149 (theoretical MH+2 =785.86 with an oxidized Met). (B) MS/MS fragmentation spectra of the −2 Da (upper panel) and the +30 Da (lower panel) precursor ions. The detected b- and y- ions are labeled in the spectra. * indicates immonium ions.