4UBV image
Deposition Date 2014-08-13
Release Date 2014-12-17
Last Version Date 2024-11-13
Entry Detail
PDB ID:
4UBV
Keywords:
Title:
Structure of the 3-ketoacyl-CoA thiolase FadA5 from M. tuberculosis with an partially acetylated cysteine in complex with acetyl-CoA and CoA
Biological Source:
Source Organism:
Method Details:
Experimental Method:
Resolution:
1.95 Å
R-Value Free:
0.23
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 43 21 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Acetyl-CoA acetyltransferase FadA5
Gene (Uniprot):fadA5
Chain IDs:A, B
Chain Length:399
Number of Molecules:2
Biological Source:Mycobacterium tuberculosis
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
SCY A CYS modified residue
Primary Citation
FadA5 a Thiolase from Mycobacterium tuberculosis: A Steroid-Binding Pocket Reveals the Potential for Drug Development against Tuberculosis.
Structure 23 21 33 (2015)
PMID: 25482540 DOI: 10.1016/j.str.2014.10.010

Abstact

With the exception of HIV, tuberculosis (TB) is the leading cause of mortality among infectious diseases. The urgent need to develop new antitubercular drugs is apparent due to the increasing number of drug-resistant Mycobacterium tuberculosis (Mtb) strains. Proteins involved in cholesterol import and metabolism have recently been discovered as potent targets against TB. FadA5, a thiolase from Mtb, is catalyzing the last step of the β-oxidation reaction of the cholesterol side-chain degradation under release of critical metabolites and was shown to be of importance during the chronic stage of TB infections. To gain structural and mechanistic insight on FadA5, we characterized the enzyme in different stages of the cleavage reaction and with a steroid bound to the binding pocket. Structural comparisons to human thiolases revealed that it should be possible to target FadA5 specifically, and the steroid-bound structure provides a solid basis for the development of inhibitors against FadA5.

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Disease

Primary Citation of related structures