ISDA

Entry Detail

PDB ID:

4C51

Keywords:

OXIDOREDUCTASE

Title:

Crystal Structure of the Catalase-Peroxidase (KatG) R418L mutant from Mycobacterium Tuberculosis

Biological Source:

Source Organism:

MYCOBACTERIUM TUBERCULOSIS H37RV

Host Organism:

ESCHERICHIA COLI

PDB Version:

Deposition Date:

2013-09-10

Release Date:

2013-11-13

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.10 Å

R-Value Free:

0.21

R-Value Work:

0.16

R-Value Observed:

0.16

Space Group:

P 42 21 2

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:CATALASE-PEROXIDASE
Mutations:YES
Chain IDs:A, B
Chain Length:740
Number of Molecules:2
Biological Source:MYCOBACTERIUM TUBERCULOSIS H37RV

UniProt ID:P9WIE5 Pfam ID:PF00141 EC:1.11.1.21

Ligand Molecules

GLC

HEM

Primary Citation

Access Channel Residues Ser315 and Asp137 in Mycobacterium Tuberculosis Catalase-Peroxidase (Katg) Control Peroxidatic Activation of the Pro-Drug Isoniazid.

Zhao, X, Hersleth, H.P, Zhu, J, Andersson, K.K, Magliozzo, R.S.Show

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.

Legend

Protein

Chemical

Disease

Primary Citation of related structures