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Information on EC 1.5.1.33 - pteridine reductase

for references in articles please use BRENDA:EC1.5.1.33

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IUBMB Comments

The enzyme from Leishmania (both amastigote and promastigote forms) catalyses the reduction by NADPH of folate and a wide variety of unconjugated pterins, including biopterin, to their tetrahydro forms. It also catalyses the reduction of 7,8-dihydropterins and 7,8-dihydrofolate to their tetrahydro forms. In contrast to EC 1.5.1.3 (dihydrofolate reductase) and EC 1.5.1.34 (6,7-dihydropteridine reductase), pteridine reductase will not catalyse the reduction of the quinonoid form of dihydrobiopterin. The enzyme is specific for NADPH; no activity has been detected with NADH. It also differs from EC 1.5.1.3 (dihydrofolate reductase) in being specific for the Si-face of NADPH.

The expected taxonomic range for this enzyme is: Bacteria, Eukaryota

Synonyms
pteridine reductase, pteridine reductase 1, tbptr1, lmptr1, ldptr1, tb-pr, nadph-dihydropteridine reductase, pteridine reductase i, more

REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
5,6,7,8-tetrahydrobiopterin + 2 NADP+ = biopterin + 2 NADPH + 2 H+
show the reaction diagram
PATHWAY SOURCE
PATHWAYS