N6-(11-cis)-retinylidene-L-lysine 266.203460693359375 266.420013427734375 394.29840087890625 394.589996337890625 (2S)-2-amino-6-[(2E,4Z,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)-2,4,6,8-nonatetraenylidene]aminohexanoic acid PSI-MOD K none C 26 H 38 N 2 O 1 MOD:01999 A protein modification that effectively converts an L-lysine residue to N6-retinylidene-(11-cis)-L-lysine. natural C 20 H 26 N6-retinylidene-L-lysine (unspecified geometric isomer)