3'-(8alpha-FMN)-L-histidine 454.088958740234375 454.329986572265625 591.14788818359375 591.469970703125 PSI-MOD In a later publication, PubMed:19438211, the authors changed the enzyme activity, the connection from a histidine nitrogen to a cysteine sulfur, and the identity of the flavin from FMN to FAD. They now believe the modification is S-(8alpha-FAD)-L-cysteine, see MOD:00152. This is a deprecated entry in RESID. It probably does not occur naturally [JSG]. hypothetical H Npros8aFMNHis 8alpha-(N3'-histidyl)FMN 3'-(8alpha-FMN)-L-histidine none flavin mononucleotide C 23 H 26 N 7 O 10 P 1 C 17 H 19 N 4 O 9 P 1 pros-(8alpha-FMN)-histidine FMNH (S)-2-amino-3-(3-[8alpha riboflavin 5'-dihydrogen phosphate]imidazol-4-yl)propanoic acid 8alpha-(N(delta)-histidyl)FMN MOD:00358 A protein modification that effectively converts an L-histidine residue to 3'-(8alpha-FMN)-L-histidine. N(pi)-(8alpha-FMN)-histidine modified L-histidine residue 8alpha-FMN modified residue