ISDA

Deposition Date 2009-06-05

Release Date 2009-07-07

Last Version Date 2023-12-13

Entry Detail

PDB ID:

2WK5

Keywords:

TRANSFERASE

Title:

Structural features of native human thymidine phosphorylase and in complex with 5-iodouracil

Biological Source:

Source Organism:

HOMO SAPIENS (Taxon ID: 9606)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.99 Å

R-Value Free:

0.28

R-Value Work:

0.20

R-Value Observed:

0.20

Space Group:

P 1 21 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:THYMIDINE PHOSPHORYLASE
Gene (Uniprot):TYMP
Chain IDs:A, B, C, D
Chain Length:482
Number of Molecules:4
Biological Source:HOMO SAPIENS

UniProt ID:P19971 Pfam ID:PF02885, PF00591, PF07831 EC:2.4.2.4

Ligand Molecules

GOL

Primary Citation

Structures of Native Human Thymidine Phosphorylase and in Complex with 5-Iodouracil.

Mitsiki, E, Papageorgiou, A.C, Iyer, S, Thiyagarajan, N, Prior, S.H, Sleep, D, Finnis, C, Acharya, K.R.Show

Biochem.Biophys.Res.Commun. 386 666 ? (2009)

PMID: 19555658 DOI: 10.1016/J.BBRC.2009.06.104

Abstact

Thymidine phosphorylase (TP) first identified as platelet derived endothelial cell growth factor (PD-ECGF) plays a key role in nucleoside metabolism. Human TP (hTP) is implicated in angiogenesis and is overexpressed in several solid tumors. Here, we report the crystal structures of recombinant hTP and its complex with a substrate 5-iodouracil (5IUR) at 3.0 and 2.5A, respectively. In addition, we provide information on the role of specific residues in the enzymatic activity of hTP through mutagenesis and kinetic studies.

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Primary Citation of related structures