4E28 image
Deposition Date 2012-03-07
Release Date 2012-11-14
Last Version Date 2024-11-20
Entry Detail
PDB ID:
4E28
Keywords:
TRANSFERASE/TRANSFERASE INHIBITOR
Title:
Structure of human thymidylate synthase in inactive conformation with a novel non-peptidic inhibitor
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.30 Å
R-Value Free:
0.22
R-Value Work:
0.18
R-Value Observed:
0.19
Space Group:
P 31 2 1
4E28 validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Thymidylate synthase
Gene (Uniprot):TYMS
Chain IDs:A
Chain Length:325
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P04818 Pfam ID:PF00303 EC:2.1.1.45
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
CME A CYS S,S-(2-HYDROXYETHYL)THIOCYSTEINE
Ligand Molecules
0MZ
9MZ
SO4
Primary Citation
Inhibitor of ovarian cancer cells growth by virtual screening: a new thiazole derivative targeting human thymidylate synthase.
J.Med.Chem. 55 10272 10276 (2012)
PMID: 23075414 DOI: 10.1021/jm300850v

Abstact

Human thymidylate synthase (hTS) was targeted through a virtual screening approach. The most optimal inhibitor identified, 2-{4-hydroxy-2-[(2-hydroxybenzylidene)hydrazono]-2,5-dihydrothiazol-5-yl}-N-(3-trifluoromethylphenyl)acetamide (5), showed a mixed-type inhibition pattern, with a K(i) of 1.3 μM and activity against ovarian cancer cell lines with the same potency as cisplatin. X-ray studies revealed that it binds the inactive enzyme conformation. This study is the first example of a nonpeptidic inhibitor that binds the inactive hTS and exhibits anticancer activity against ovarian cancer cells.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
3EGY
3EHI