6A7W

Structure of a catalytic domain of the colistin resistance enzyme

• PDB DOI: https://doi.org/10.2210/pdb6A7W/pdb
• Entry: 6A7W supersedes: 5XNU

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


• Deposited: 2018-07-04 Released: 2018-11-07 
• Deposition Author(s): Wang, X.D., Chai, Y., Qi, J.X., Gao, G.F.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.99 Å
• R-Value Free: 0.220 
• R-Value Work: 0.180 
• R-Value Observed: 0.182 

Literature

Structural and functional insights into MCR-2 mediated colistin resistance.

Wang, X., Lu, Q., Qi, J., Chai, Y., Wang, Y., Gao, G.F.

(2018) Sci China Life Sci 61: 1432-1436

• PubMed: 30194678 
• DOI: https://doi.org/10.1007/s11427-018-9363-4
• Primary Citation of Related Structures:  
  6A7W

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Organizational Affiliation: 

CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 72.42 kDa 
• Atom Count: 5,084 
• Modelled Residue Count: 648 
• Deposited Residue Count: 648 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative integral membrane protein	A, B	324	Escherichia coli	Mutation(s): 0  Gene Names: mcr-2
UniProt
Find proteins for A0A1C3NEV1 (Escherichia coli) Explore A0A1C3NEV1  Go to UniProtKB:  A0A1C3NEV1

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	C [auth A], D [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.99 Å
• R-Value Free: 0.220 
• R-Value Work: 0.180 
• R-Value Observed: 0.182 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.443	α = 90
b = 82.296	β = 97.39
c = 79.914	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2018-11-07 
Deposition Author(s): Wang, X.D., Chai, Y., Qi, J.X., Gao, G.F.
• This entry supersedes: 5XNU

Revision History  

• Version 1.0: 2018-11-07
  Type: Initial release
  
• Version 1.1: 2019-01-16
  Changes: Data collection, Database references
• Version 1.2: 2023-11-22
  Changes: Data collection, Database references, Refinement description