4TRN

STRUCTURE OF INHA FROM MYCOBACTERIUM TUBERCULOSIS COMPLEXED TO NADH


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of the enoyl-ACP reductase of Mycobacterium tuberculosis (InhA) in the apo-form and in complex with the active metabolite of isoniazid pre-formed by a biomimetic approach.

Chollet, A.Mourey, L.Lherbet, C.Delbot, A.Julien, S.Baltas, M.Bernadou, J.Pratviel, G.Maveyraud, L.Bernardes-Genisson, V.

(2015) J Struct Biol 190: 328-337

  • DOI: https://doi.org/10.1016/j.jsb.2015.04.008
  • Primary Citation of Related Structures:  
    4TRM, 4TRN, 4TRO

  • PubMed Abstract: 

    InhA is an enoyl-ACP reductase of Mycobacterium tuberculosis implicated in the biosynthesis of mycolic acids, essential constituents of the mycobacterial cell wall. To date, this enzyme is considered as a promising target for the discovery of novel antitubercular drugs. In this work, we describe the first crystal structure of the apo form of the wild-type InhA at 1.80Å resolution as well as the crystal structure of InhA in complex with the synthetic metabolite of the antitubercular drug isoniazid refined to 1.40Å. This metabolite, synthesized in the absence of InhA, is able to displace and replace the cofactor NADH in the enzyme active site. This work provides a unique opportunity to enlighten the structural adaptation of apo-InhA to the binding of the NADH cofactor or of the isoniazid adduct. In addition, a differential scanning fluorimetry study of InhA, in the apo-form as well as in the presence of NAD(+), NADH and INH-NADH was performed showing that binding of the INH-NADH adduct had a strong stabilizing effect.


  • Organizational Affiliation

    Laboratoire de Chimie de Coordination (LCC), Centre National de la Recherche Scientifique (CNRS), 205 Route de Narbonne, BP 44099, F-31077 Toulouse, Cedex 4, France; Université de Toulouse, Université Paul Sabatier, INPT, F-31077 Toulouse, Cedex 4, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
INHA269Mycobacterium tuberculosisMutation(s): 0 
Gene Names: inha
EC: 1.3.1.9
UniProt
Find proteins for P9WGR1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WGR1 
Go to UniProtKB:  P9WGR1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WGR1
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.11α = 90
b = 98.11β = 90
c = 139.16γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
BUSTER-TNTphasing
XDSdata reduction
XSCALEdata scaling
BUSTERrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-04-29
    Type: Initial release
  • Version 1.1: 2015-06-17
    Changes: Database references
  • Version 1.2: 2023-12-20
    Changes: Data collection, Database references, Refinement description