Fig. 3From: Profiling post-translational modifications of histones in human monocyte-derived macrophagesIdentification of His monomethylation. MS/MS spectrum of Histone H4 peptides marked with mono-methylated histidine acquired using qTOF. a Peptide sequence and assignment of y and b transitions; b Spectrum with corresponding assignment of amino acids; c Mass error for fragment ions assignmentBack to article page