Protein
Hydroxysqualene dehydroxylase
Organism
Sinorhizobium fredii (strain NBRC 101917 / NGR234)
Function
Involved in the biosynthesis of the hopanoid precursor squalene (SQ) from farnesyl diphosphate (FPP). Catalyzes the third (last) step, the reduction of hydroxysqualene (HSQ) to SQ.
Similarity
Belongs to the HpnE family.
Sequence
MPKNVHIIGAGISGLSAAVQLSNAGLPVHVYEATQQAGGRCRSFFDSATNLTIDNGNHLVLSGNQYVRNYARAIGTESGLVGPTSAKFPFVDISTVQRWQVDLGGGRLPTWVFHKARRVPDTRLWDYLKLAPILWAGADELVGNTIPCNGTLYRRLVRPLLLAALNCDPPEGSAGLAGAIVRETLLAGGEACRPLVARDGLSAVLVEPAVKLLERRGATVRLSHKLRKLAKSAEIISELDFGDDKIAVGPDDAVILAVPPRAAATLLPGLKTPTEFRAVVNAHFRFDPPVGADPILGVVGGLVEWLFAYPQRLSVTISNGDRLLDIPREEVVRVIWRDVCEAGGISGELPPWQIVCERRATFQATPEQNALRPGPVTGCKNLFLAGDWTATGLPATIEGSVRSGNRAADLALSETNT