contains myristoylated residue iron containing modified residue manganese containing modified residue tetrakis-L-glutamato bis-L-N1'-histidino lipid carboxylato manganese iron oxide 1- 1140.326416015625 1140.8599853515625 350.038238525390625 350.1199951171875 A protein modification that effectively converts four L-glutamic acid residues and two L-histidine residues to tetrakis-L-glutamato bis-L-N1'-histidino lipid carboxylato manganese iron oxide. C 14 Fe 1 H 23 Mn 1 N 0 O 3 C 46 Fe 1 H 65 Mn 1 N 10 O 17 Cross-link 6. It is not clear whether the lipid carboxylate is a cofactor or a substrate, and its identity is not certain. It was modeled as myristic acid [JSG]. E, E, E, E, H, H MOD:01443 PSI-MOD natural metal or metal cluster coordinated L-glutamic acid residue metal or metal cluster coordinated L-histidine residue