2B37

Crystal structure of Mycobacterium tuberculosis enoyl reductase (InhA) inhibited by 5-octyl-2-phenoxyphenol

• PDB DOI: https://doi.org/10.2210/pdb2B37/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Mycobacterium tuberculosis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-09-19 Released: 2006-03-07 
• Deposition Author(s): Sullivan, T.J., Truglio, J.J., Novichenok, P., Stratton, C., Zhang, X., Kaur, T., Johnson, F., Boyne, M.S., Amin, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.294 
• R-Value Work: 0.225 
• R-Value Observed: 0.225 

Literature

High Affinity InhA Inhibitors with Activity against Drug-Resistant Strains of Mycobacterium tuberculosis

Sullivan, T.J., Truglio, J.J., Boyne, M.E., Novichenok, P., Zhang, X., Stratton, C., Li, H.J., Kaur, T., Amin, A., Johnson, F., Slayden, R.A., Kisker, C., Tonge, P.J.

(2006) ACS Chem Biol 1: 43-53

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 175.91 kDa 
• Atom Count: 11,736 
• Modelled Residue Count: 1,521 
• Deposited Residue Count: 1,614 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Enoyl-[acyl-carrier-protein] reductase [NADH]	A, B, C, D, E, F	269	Mycobacterium tuberculosis	Mutation(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

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAD	G [auth A], H [auth B], J [auth C], L [auth D], M [auth E], N [auth F]	NICOTINAMIDE-ADENINE-DINUCLEOTIDE C21 H27 N7 O14 P2 BAWFJGJZGIEFAR-NNYOXOHSSA-N
8PS	I [auth C], K [auth D]	5-OCTYL-2-PHENOXYPHENOL C20 H26 O2 JOWYBLIPWAMIHM-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
8PS	BindingDB:  2B37	Ki: min: 1, max: 1.1 (nM) from 2 assay(s)
		IC50: 5 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.294 
• R-Value Work: 0.225 
• R-Value Observed: 0.225 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 82.341	α = 90
b = 100.293	β = 90
c = 379.275	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-03-07 
Deposition Author(s): Sullivan, T.J., Truglio, J.J., Novichenok, P., Stratton, C., Zhang, X., Kaur, T., Johnson, F., Boyne, M.S., Amin, A.

Revision History  

• Version 1.0: 2006-03-07
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references, Derived calculations