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CATH Classification

Domain Context

CATH Clusters

Superfamily Dihydrofolate Reductase, subunit A
Functional Family Rib7p

Enzyme Information

1.1.1.302
2,5-diamino-6-(ribosylamino)-4(3H)-pyrimidinone 5'-phosphate reductase.
based on mapping to UniProt P33312
2,5-diamino-6-(5-phospho-D-ribitylamino)pyrimidin-4(3H)-one + NAD(P)(+) = 2,5-diamino-6-(5-phospho-D-ribosylamino)pyrimidin-4(3H)-one + NAD(P)H.
-!- The reaction proceeds in the opposite direction. -!- A step in riboflavin biosynthesis, NADPH and NADH function equally well as reductant. -!- Differs from EC 1.1.1.193 since it does not catalyze the reduction of 5-amino-6-ribosylaminopyrimidine-2,4(1H,3H)-dione 5'-phosphate.

UniProtKB Entries (1)

P33312
RIB7_YEAST
Saccharomyces cerevisiae S288C
2,5-diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate reductase

PDB Structure

PDB 4HA9
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Structural and functional insights into Saccharomyces cerevisiae riboflavin biosynthesis reductase RIB7.
Lv, Z., Sun, J., Liu, Y.
Plos One
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