ACT_SITE 83; /note="Nucleophile; for GATase activity"; /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"; ACT_SITE 169; /note="For GATase activity"; /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"; ACT_SITE 171; /note="For GATase activity"; /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"