4TRM

Structure of the apo form of InhA from Mycobacterium tuberculosis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.1 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: 10.1016/j.jsb.2015.04.008
  • Structures With Same Primary Citation

  • 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 a ...

    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. Electronic address: vania.bernardes-genisson@lcc-toulouse.fr.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Enoyl-[acyl-carrier-protein] reductase [NADH]
A, B, C, D, E, F
269Mycobacterium tuberculosisMutation(s): 0 
Gene Names: inhA
EC: 1.3.1.9
Find proteins for P9WGR0 (Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh))
Go to UniProtKB:  P9WGR0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MES
Query on MES

Download CCD File 
A
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.190 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.096α = 90
b = 81.787β = 95.62
c = 187.242γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
BUSTER-TNTphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-04-29
    Type: Initial release
  • Version 1.1: 2015-06-17
    Changes: Database references