4TRO

Structure of the enoyl-ACP reductase of Mycobacterium tuberculosis InhA, inhibited with the active metabolite of isoniazid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.151 
  • R-Value Work: 0.121 

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
  • Primary Citation of Related Structures:  

  • 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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Enoyl-[acyl-carrier-protein] reductase [NADH]
A
269Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Mutation(s): 0 
Gene Names: inhA
EC: 1.3.1.9
Find proteins for P9WGR1 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WGR1
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

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Download CCD File 
A
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
HEPES
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

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Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
NAD
Query on NAD

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Download CCD File 
A
NICOTINAMIDE-ADENINE-DINUCLEOTIDE
C21 H27 N7 O14 P2
BAWFJGJZGIEFAR-NNYOXOHSSA-N
 Ligand Interaction
ZID
Query on ZID

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Download CCD File 
A
ISONICOTINIC-ACETYL-NICOTINAMIDE-ADENINE DINUCLEOTIDE
C27 H30 N8 O15 P2
SURAWYIAXPVHGO-XDBKRARRSA-N
 Ligand Interaction
DMS
Query on DMS

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Download CCD File 
A
DIMETHYL SULFOXIDE
C2 H6 O S
IAZDPXIOMUYVGZ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.151 
  • R-Value Work: 0.121 
  • Space Group: P 62 2 2
Unit Cell:
Length (Å)Angle (°)
a = 97.434α = 90.00
b = 97.434β = 90.00
c = 139.752γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
REFMACrefinement
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History 

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