CATH Domain 5olnB01

CATH Classification

Level	CATH Code	Description
	1	Mainly Alpha
	1.20	Up-down Bundle
	1.20.970	Transferase, Pyrimidine Nucleoside Phosphorylase; Chain A, domain 3
	1.20.970.10	Transferase, Pyrimidine Nucleoside Phosphorylase; Chain C

Domain Context

CATH Clusters

Superfamily	Transferase, Pyrimidine Nucleoside Phosphorylase; Chain C
Functional Family	Pyrimidine-nucleoside phosphorylase

Enzyme Information

2.4.2.2

Pyrimidine-nucleoside phosphorylase.

based on mapping to UniProt P39142

(1) Uridine + phosphate = uracil + alpha-D-ribose 1-phosphate. (2) Thymidine + phosphate = thymine + 2-deoxy-alpha-D-ribose 1-phosphate. (3) 2'-deoxyuridine + phosphate = uracil + 2-deoxy-alpha-D-ribose 1-phosphate.

-!- Unlike EC 2.4.2.3 and EC 2.4.2.4, this enzyme can accept both the ribonucleoside uridine and the 2'-deoxyribonucleosides 2'-deoxyuridine and thymidine. -!- The reaction is reversible, and the enzyme does not distinguish between alpha-D-ribose 1-phosphate and 2-deoxy-alpha-D-ribose 1-phosphate in the synthetic direction. -!- Formerly EC 2.4.2.23.

UniProtKB Entries (1)

P39142

PDP_BACSU

Bacillus subtilis subsp. subtilis str. 168

Pyrimidine-nucleoside phosphorylase

PDB Structure

PDB	5OLN
External Links	PDBSum Proteopedia
Method	X-RAY DIFFRACTION
Organism
Primary Citation	Crystal structure of pyrimidine-nucleoside phosphorylase from Bacillus subtilis in complex with imidazole and sulfate. Balaev, V.V., Prokofev, I.I., Gabdoulkhakov, A.G., Betzel, C., Lashkov, A.A. Acta Crystallogr F Struct Biol Commun