6A7W | pdb_00006a7w

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 (Depositor), 0.211 (DCC) 
• R-Value Work: 
  0.180 (Depositor) 
• R-Value Observed: 
  0.182 (Depositor) 

Starting Model: experimental

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 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.
College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.
Key Laboratory of the Ministry of Health for Research on Quality and Standardization of Biotech Products, Division of HIV/AIDS and Sexually Transmitted Virus Vaccines, National Institutes for Food and Drug Control, Beijing, 100050, China.
CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China. [e-mail].
College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China. [e-mail].
National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Beijing, 102206, China. [e-mail].
Research Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing, 100101, China. [e-mail].

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 
• Modeled 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 EC: 2.7.8.43
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 (Depositor), 0.211 (DCC) 
• R-Value Work:  0.180 (Depositor) 
• R-Value Observed: 0.182 (Depositor) 

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
• Version 1.3: 2024-11-13
  Changes: Structure summary