ACT_SITE 188; /evidence="ECO:0000255|PROSITE-ProRule:PRU10038, ECO:0000269|PubMed:9665742"; ACT_SITE 342; /evidence="ECO:0000250|UniProtKB:Q5NUF3"; ACT_SITE 372; /evidence="ECO:0000250|UniProtKB:Q5NUF3"