3HPS | pdb_00003hps

Crystal structure of Mycobacterium tuberculosis LeuA complexed with ketoisocaproate (KIC)

• PDB DOI: https://doi.org/10.2210/pdb3HPS/pdb

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


• Deposited: 2009-06-04 Released: 2010-05-19 
• Deposition Author(s): Koon, N., Squire, C.J., Baker, E.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 
  0.205 (Depositor), 0.210 (DCC) 
• R-Value Work: 
  0.158 (Depositor), 0.160 (DCC) 
• R-Value Observed: 
  0.160 (Depositor) 

Starting Model: experimental

Literature

Probing the active site of M. tuberculosis LeuA

Koon, N., Squire, C.J., Baker, E.N.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content 

• Total Structure Weight: 141.21 kDa 
• Atom Count: 9,868 
• Modeled Residue Count: 1,152 
• Deposited Residue Count: 1,288 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
2-isopropylmalate synthase	A, B	644	Mycobacterium tuberculosis H37Rv	Mutation(s): 0  Gene Names: leuA, MT3813, MTV025.058, Rv3710 EC: 2.3.3.13
UniProt
Find proteins for P9WQB3 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WQB3  Go to UniProtKB:  P9WQB3

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LEU	C [auth A], G [auth B]	LEUCINE C6 H13 N O2 ROHFNLRQFUQHCH-YFKPBYRVSA-N
COI	E [auth A], I [auth B]	2-OXO-4-METHYLPENTANOIC ACID C6 H10 O3 BKAJNAXTPSGJCU-UHFFFAOYSA-N
GOL	F [auth A], J [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	D [auth A], H [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free:  0.205 (Depositor), 0.210 (DCC) 
• R-Value Work:  0.158 (Depositor), 0.160 (DCC) 
• R-Value Observed: 0.160 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.411	α = 90
b = 154.848	β = 97.65
c = 68.882	γ = 90

Software Package:

Software Name	Purpose
MAR345dtb	data collection
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
REFMAC	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-05-19 
Deposition Author(s): Koon, N., Squire, C.J., Baker, E.N.

Revision History  

• Version 1.0: 2010-05-19
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2013-06-05
  Changes: Non-polymer description
• Version 1.3: 2023-09-06
  Changes: Data collection, Database references, Derived calculations, Refinement description