6KA1

E.coli Malate dehydrogenase

• PDB DOI: https://doi.org/10.2210/pdb6KA1/pdb

• Classification: CYTOSOLIC PROTEIN
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2019-06-19 Released: 2020-06-17 
• Deposition Author(s): Wang, H., Wang, M., Sun, H.
• Funding Organization(s): The University Grants Committee, Research Grants Council (RGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.54 Å
• R-Value Free: 0.182 
• R-Value Work: 0.157 
• R-Value Observed: 0.158 

Literature

MDH is a major silver target in E. coli

Wang, H., Wang, M., Sun, H.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 130.45 kDa 
• Atom Count: 9,908 
• Modelled Residue Count: 1,227 
• Deposited Residue Count: 1,268 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Malate dehydrogenase	A, B, C, D	317	Escherichia coli K-12	Mutation(s): 0  Gene Names: mdh EC: 1.1.1.37
UniProt
Find proteins for P61889 (Escherichia coli (strain K12)) Explore P61889  Go to UniProtKB:  P61889

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.54 Å
• R-Value Free: 0.182 
• R-Value Work: 0.157 
• R-Value Observed: 0.158 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.935	α = 90
b = 125.102	β = 107.12
c = 85.756	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
DENZO	data reduction
SCALEPACK	data scaling
PDB_EXTRACT	data extraction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-06-17 
Deposition Author(s): Wang, H., Wang, M., Sun, H.

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Funding Organization	Location	Grant Number
The University Grants Committee, Research Grants Council (RGC)	Hong Kong	17307017

Revision History  

• Version 1.0: 2020-06-17
  Type: Initial release
  
• Version 1.1: 2023-11-22
  Changes: Data collection, Database references, Refinement description