S-phytochromobilin-L-cysteine 584.26348876953125 584.65997314453125 687.27264404296875 687.80999755859375 natural phytochromobilin cysteine adduct BINDING Phytochromobilin chromophore (covalent; via 1 link) phytochromobilin phytochrome chromophore PSI-MOD C 33 H 36 N 4 O 6 Phytochromobilin C 36 H 41 N 5 O 7 S 1 (2R,3R)-3-[(1R)-1-(((2R)-2-amino-2-carboxy)ethylsulfanyl)ethyl]-8,12-bis(2-carboxyethyl)-18-ethyl-2,7,13,17-tetramethyl-1,2,3,19,21,22,24-heptahydrobilin-1,19(21H,22H,24H)-dione MOD:00142 A protein modification that effectively results from forming an adduct between a cysteine residue and the tetrapyrrole compound phytochromobilin. none S-phytochromobilin-L-cysteine C 18-ethenyl-3-[1-((2-amino-2-carboxy)ethylsulfanyl)ethyl]-1,2,3,19,22,24-hexahydro-2,7,13,17-tetramethyl-1,19-dioxo-21H-biline-8,12-dipropanoic acid tetrapyrrole modified residue modified L-cysteine residue