ISDA: 1SJ9

Deposition Date 2004-03-03

Release Date 2005-03-08

Last Version Date 2023-08-23

Entry Detail

PDB ID:

1SJ9

Keywords:

TRANSFERASE

Title:

Crystal structure of the uridine phosphorylase from Salmonella typhimurium at 2.5A resolution

Biological Source:

Source Organism:

Salmonella typhimurium (Taxon ID: 99287)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.50 Å

R-Value Free:

0.27

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 61

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Uridine phosphorylase
Gene (Uniprot):udp
Chain IDs:A, B, C, D, E, F
Chain Length:253
Number of Molecules:6
Biological Source:Salmonella typhimurium

UniProt ID:P0A1F6 Pfam ID:PF01048 EC:2.4.2.3

Ligand Molecules

PO4

Primary Citation

Preliminary investigation of the three-dimensional structure of Salmonella typhimurium uridine phosphorylase in the crystalline state.

Dontsova, M.V, Gabdoulkhakov, A.G, Molchan, O.K, Lashkov, A.A, Garber, M.B, Mironov, A.S, Zhukhlistova, N.E, Morgunova, E.Y, Voelter, W, Betzel, C, Zhang, Y, Ealick, S.E, Mikhailov, A.M.Show

Acta Crystallogr.,Sect.F 61 337 340 (2005)

PMID: 16511035 DOI: 10.1107/S1744309105007463

Abstact

Uridine phosphorylase (UPh) catalyzes the phosphorolytic cleavage of the C-N glycosidic bond of uridine to ribose 1-phosphate and uracil in the pyrimidine-salvage pathway. The crystal structure of the Salmonella typhimurium uridine phosphorylase (StUPh) has been determined at 2.5 A resolution and refined to an R factor of 22.1% and an Rfree of 27.9%. The hexameric StUPh displays 32 point-group symmetry and utilizes both twofold and threefold non-crystallographic axes. A phosphate is bound at the active site and forms hydrogen bonds to Arg91, Arg30, Thr94 and Gly26 of one monomer and Arg48 of an adjacent monomer. The hexameric StUPh model reveals a close structural relationship to Escherichia coli uridine phosphorylase (EcUPh).

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