1ZID

LONG FATTY ACID CHAIN ENOYL-ACP REDUCTASE (INHA) IN COMPLEX WITH AN ISONICOTINIC-ACYL-NADH INHIBITOR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Modification of the NADH of the isoniazid target (InhA) from Mycobacterium tuberculosis.

Rozwarski, D.A.Grant, G.A.Barton, D.H.Jacobs Jr., W.R.Sacchettini, J.C.

(1998) Science 279: 98-102


  • PubMed Abstract: 
  • The preferred antitubercular drug isoniazid specifically targets a long-chain enoyl-acyl carrier protein reductase (InhA), an enzyme essential for mycolic acid biosynthesis in Mycobacterium tuberculosis. Despite the widespread use of this drug for mo ...

    The preferred antitubercular drug isoniazid specifically targets a long-chain enoyl-acyl carrier protein reductase (InhA), an enzyme essential for mycolic acid biosynthesis in Mycobacterium tuberculosis. Despite the widespread use of this drug for more than 40 years, its precise mode of action has remained obscure. Data from x-ray crystallography and mass spectrometry reveal that the mechanism of isoniazid action against InhA is covalent attachment of the activated form of the drug to the nicotinamide ring of nicotinamide adenine dinucleotide bound within the active site of InhA.


    Related Citations: 
    • Crystal Structure and Function of the Isoniazid Target of Mycobacterium Tuberculosis
      Dessen, A.,Quemard, A.,Blanchard, J.S.,Jacobs Junior, W.R.,Sacchettini, J.C.
      (1995) Science 267: 1638


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX 77843, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ENOYL-[ACYL-CARRIER-PROTEIN] REDUCTASE
A
268Mycobacterium 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 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZID
Query on ZID

Download SDF File 
Download CCD File 
A
ISONICOTINIC-ACETYL-NICOTINAMIDE-ADENINE DINUCLEOTIDE
C27 H30 N8 O15 P2
SURAWYIAXPVHGO-XDBKRARRSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.202 
  • Space Group: P 62 2 2
Unit Cell:
Length (Å)Angle (°)
a = 100.530α = 90.00
b = 100.530β = 90.00
c = 138.960γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
X-PLORrefinement
DENZOdata reduction
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-03-25
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance