4C50 image
Deposition Date 2013-09-10
Release Date 2013-11-13
Last Version Date 2023-12-20
Entry Detail
PDB ID:
4C50
Keywords:
OXIDOREDUCTASE
Title:
Crystal Structure of the Catalase-Peroxidase (KatG) D137S mutant from Mycobacterium Tuberculosis
Biological Source:
Source Organism:
MYCOBACTERIUM TUBERCULOSIS (Taxon ID: 83332)
Host Organism:
ESCHERICHIA COLI
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.50 Å
R-Value Free:
0.31
R-Value Work:
0.26
R-Value Observed:
0.26
Space Group:
P 42 21 2
4C50 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CATALASE-PEROXIDASE
Mutations:YES
Chain IDs:A, B
Chain Length:740
Number of Molecules:2
Biological Source:MYCOBACTERIUM TUBERCULOSIS
UniProt ID:P9WIE5 Pfam ID:PF00141
Ligand Molecules
ACT
GLC
HEM
Primary Citation
Access Channel Residues Ser315 and Asp137 in Mycobacterium Tuberculosis Catalase-Peroxidase (Katg) Control Peroxidatic Activation of the Pro-Drug Isoniazid.
Chem.Commun.(Camb.) 49 11650 ? (2013)
PMID: 24185282 DOI: 10.1039/C3CC47022A

Abstact

Peroxidatic activation of the anti-tuberculosis pro-drug isoniazid by Mycobacterium tuberculosis catalase-peroxidase (KatG) is regulated by gating residues of a heme access channel. The steric restriction at the bottleneck of this channel is alleviated by replacement of residue Asp137 with Ser, according to crystallographic and kinetic studies.

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Disease

Primary Citation of related structures
4C51