UniProt functional annotation for Q01782

UniProt code: Q01782.

Organism: Leishmania major.
Taxonomy: Eukaryota; Discoba; Euglenozoa; Kinetoplastea; Metakinetoplastina; Trypanosomatida; Trypanosomatidae; Leishmaniinae; Leishmania.
 
Function: Exhibits a NADPH-dependent biopterin reductase activity. Has good activity with folate and significant activity with dihydrofolate and dihydrobiopterin, but not with quinonoid dihydrobiopterin. Confers resistance to methotrexate (MTX). {ECO:0000269|PubMed:7972081}.
 
Catalytic activity: Reaction=(6R)-L-erythro-5,6,7,8-tetrahydrobiopterin + 2 NADP(+) = 2 H(+) + L-erythro-biopterin + 2 NADPH; Xref=Rhea:RHEA:19509, ChEBI:CHEBI:15378, ChEBI:CHEBI:57783, ChEBI:CHEBI:58349, ChEBI:CHEBI:59560, ChEBI:CHEBI:63931; EC=1.5.1.33;
Pathway: Cofactor biosynthesis; tetrahydrobiopterin biosynthesis; tetrahydrobiopterin from biopterin: step 1/1. {ECO:0000269|PubMed:9521731}.
Subunit: Homotetramer. {ECO:0000269|PubMed:11373620, ECO:0000269|PubMed:9153248}.
Similarity: Belongs to the short-chain dehydrogenases/reductases (SDR) family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.