ACT_SITE 120; /note="Charge relay system"; /evidence="ECO:0000255|PROSITE-ProRule:PRU00274, ECO:0000305|PubMed:27810896"; ACT_SITE 164; /note="Charge relay system"; /evidence="ECO:0000255|PROSITE-ProRule:PRU00274, ECO:0000305|PubMed:27810896"; ACT_SITE 257; /note="Charge relay system"; /evidence="ECO:0000255|PROSITE-ProRule:PRU00274, ECO:0000305|PubMed:27810896"