iron-sulfur cluster containing modification vanadium containing modified residue L-cysteinyl-L-histidino-homocitryl vanadium heptairon nonasulfide 1172.316650390625 1172.8699951171875 932.24847412109375 932.58001708984375 none MOD:00800 C 16 H 18 N 4 O 9 S 10 V 1 Fe 7 nitrogenase iron-vanadium cofactor CysHis-[V7Fe9S] Cross-link 2; incidental to RESID:AA0300. L-cysteinyl-L-histidino-homocitryl vanadium heptairon nonasulfide carbide C, H hypothetical C 7 H 6 O 7 S 9 V 1 Fe 7 PSI-MOD A protein modification that effectively converts an L-cysteine residue, an L-histidine residue, homocitric acid and a one-vanadium seven-iron nine-sulfur cluster to L-cysteinyl-L-histidino-homocitryl vanadium heptairon nonasulfide. metal or metal cluster coordinated L-cysteine residue metal or metal cluster coordinated L-histidine residue