MODRES 2B23 CME A 381 CYS S,S-(2-HYDROXYETHYL)THIOCYSTEINE MODRES 2B23 CME A 417 CYS S,S-(2-HYDROXYETHYL)THIOCYSTEINE MODRES 2B23 CME A 530 CYS S,S-(2-HYDROXYETHYL)THIOCYSTEINE MODRES 2B23 CME B 381 CYS S,S-(2-HYDROXYETHYL)THIOCYSTEINE MODRES 2B23 CME B 417 CYS S,S-(2-HYDROXYETHYL)THIOCYSTEINE MODRES 2B23 CME B 530 CYS S,S-(2-HYDROXYETHYL)THIOCYSTEINE