##gff-version 3 Q4WR16 UniProtKB Chain 1 735 . . . ID=PRO_0000415495;Note=Protostadienol synthase helA Q4WR16 UniProtKB Repeat 132 173 . . . Note=PFTB 1 Q4WR16 UniProtKB Repeat 490 531 . . . Note=PFTB 2 Q4WR16 UniProtKB Repeat 567 607 . . . Note=PFTB 3 Q4WR16 UniProtKB Repeat 616 663 . . . Note=PFTB 4 Q4WR16 UniProtKB Active site 463 463 . . . Note=Proton donor;Ontology_term=ECO:0000305;evidence=ECO:0000305 Q4WR16 UniProtKB Mutagenesis 702 708 . . . Note=Changes its oxidosqualene:protostadienol cyclase (OSPC) activity to oxidosqualene:lanosterol cyclase (OSLC) activity. APPGGMR->NKSCAIS;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:19951700;Dbxref=PMID:19951700 Q4WR16 UniProtKB Mutagenesis 703 703 . . . Note=Impairs catalytic activity%3B when associated with S-704. P->K;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:19951700;Dbxref=PMID:19951700 Q4WR16 UniProtKB Mutagenesis 704 704 . . . Note=Impairs catalytic activity%3B when associated with K-703. P->S;Ontology_term=ECO:0000269;evidence=ECO:0000269|PubMed:19951700;Dbxref=PMID:19951700