ACT_SITE 49; /note="Charge relay system"; /evidence="ECO:0000250|UniProtKB:P15367"; ACT_SITE 90; /note="Charge relay system"; /evidence="ECO:0000250|UniProtKB:P15367"; ACT_SITE 115; /note="Charge relay system"; /evidence="ECO:0000250|UniProtKB:P15367"