>tr|A6ZSN3|A6ZSN3_YEAS7 4a-hydroxytetrahydrobiopterin dehydratase OS=Saccharomyces cerevisiae GN=SCY_2367 MHNKIVRIASSALTGGKLLEKLKPLTRWEVQWDPNKTKCLGITREVTFKDYETTWAFLTR VSMRSHLWGHHPLIHTSYTWVKLELHTHDIDPKDGAHSQLSDIDVRMAKRIDSYIDEMTT