ACT_SITE 172; /evidence="ECO:0000250|UniProtKB:Q38860"; ACT_SITE 251; /evidence="ECO:0000250|UniProtKB:Q38860"; ACT_SITE 339; /evidence="ECO:0000250|UniProtKB:Q38860"; ACT_SITE 343; /evidence="ECO:0000250|UniProtKB:Q38860"; ACT_SITE 372; /evidence="ECO:0000250|UniProtKB:Q38860"; ACT_SITE 376; /evidence="ECO:0000250|UniProtKB:Q38860"