2QJ3

Mycobacterium tuberculosis FabD

• PDB DOI:  https://doi.org/10.2210/pdb2QJ3/pdb

• Classification: TRANSFERASE
• Organism(s): Mycobacterium tuberculosis H37Rv
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2007-07-06 Released: 2007-09-04 
• Deposition Author(s): Ghadbane, H., Brown, A.K., Kremer, L., Besra, G.S., Futterer, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.267 
• R-Value Work: 0.224 
• R-Value Observed: 0.226 

Literature

Structure of Mycobacterium tuberculosis mtFabD, a malonyl-CoA:acyl carrier protein transacylase (MCAT).

Ghadbane, H., Brown, A.K., Kremer, L., Besra, G.S., Futterer, K.

(2007) Acta Crystallogr Sect F Struct Biol Cryst Commun 63: 831-835

• PubMed: 17909282 
• DOI: https://doi.org/10.1107/S1744309107042455
• Primary Citation of Related Structures:  
  2QJ3


• PubMed Abstract: 
  

  Mycobacteria display a unique and unusual cell-wall architecture, central to which is the membrane-proximal mycolyl-arabinogalactan-peptidoglycan core (mAGP). The biosynthesis of mycolic acids, which form the outermost layer of the mAGP core, involves malonyl-CoA:acyl carrier protein transacylase (MCAT). This essential enzyme catalyses the transfer of malonyl from coenzyme A to acyl carrier protein AcpM, thus feeding these two-carbon units into the chain-elongation cycle of the type II fatty-acid synthase. The crystal structure of M. tuberculosis mtFabD, the mycobacterial MCAT, has been determined to 3.0 A resolution by multi-wavelength anomalous dispersion. Phasing was facilitated by Ni2+ ions bound to the 20-residue N-terminal affinity tag, which packed between the two independent copies of mtFabD.

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Organizational Affiliation: 

School of Biosciences, The University of Birmingham, Edgbaston, Birmingham B15 2TT, England.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 66.27 kDa 
• Atom Count: 4,596 
• Modelled Residue Count: 634 
• Deposited Residue Count: 644 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Malonyl CoA-acyl carrier protein transacylase	A, B	322	Mycobacterium tuberculosis H37Rv	Mutation(s): 0  Gene Names: fabD, Rv2243, MTCY427.24 EC: 2.3.1.39
UniProt
Find proteins for P9WNG5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WNG5  Go to UniProtKB:  P9WNG5

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NI	C [auth B], D [auth B], E [auth B], F [auth B], G [auth B]	NICKEL (II) ION Ni VEQPNABPJHWNSG-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.267 
• R-Value Work: 0.224 
• R-Value Observed: 0.226 
• Space Group: P 6₂ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 180.24	α = 90
b = 180.24	β = 90
c = 95.99	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
ADSC	data collection
XDS	data reduction
XSCALE	data scaling
SHARP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-09-04 
Deposition Author(s): Ghadbane, H., Brown, A.K., Kremer, L., Besra, G.S., Futterer, K.

Revision History  

• Version 1.0: 2007-09-04
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Source and taxonomy, Version format compliance