6PUA | pdb_00006pua

The 2.0 A Crystal Structure of the Type B Chloramphenicol Acetyltransferase from Vibrio cholerae

• PDB DOI: https://doi.org/10.2210/pdb6PUA/pdb

• Classification: TRANSFERASE
• Organism(s): Vibrio cholerae O1 biovar El Tor str. N16961
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2019-07-18 Released: 2019-09-25 
• Deposition Author(s): Kim, Y., Maltseva, N., Stam, J., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 
  0.188 (Depositor) 
• R-Value Work: 
  0.163 (Depositor) 
• R-Value Observed: 
  0.164 (Depositor) 

Starting Model: experimental

Literature

Structural genomics of bacterial drug targets: Application of a high-throughput pipeline to solve 58 protein structures from pathogenic and related bacteria.

Inniss, N.L., Minasov, G., Chang, C., Tan, K., Kim, Y., Maltseva, N., Stogios, P., Filippova, E., Michalska, K., Osipiuk, J., Jaroszewki, L., Godzik, A., Savchenko, A., Joachimiak, A., Anderson, W.F., Satchell, K.J.F.

(2025) Microbiol Resour Announc : e0020025-e0020025

• PubMed: 40391899 
• DOI: https://doi.org/10.1128/mra.00200-25
• Primary Citation of Related Structures:  
  5UME, 5USW, 5USX, 5UTX, 5UU6, 5UWY, 5UX9, 5WP0, 6AON, 6AOO, 6AZI, 6B5F, 6B8D, 6BK7, 6BLB, 6C8Q, 6PU9, 6PUA, 6PXA, 6W2Z


• PubMed Abstract: 
  

  Antibiotic resistance remains a leading cause of severe infections worldwide. Small changes in protein sequence can impact antibiotic efficacy. Here, we report deposition of 58 X-ray crystal structures of bacterial proteins that are known targets for antibiotics, which expands knowledge of structural variation to support future antibiotic discovery or modifications.

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Organizational Affiliation: 

Department of Microbiology-Immunology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois, USA.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 73.35 kDa 
• Atom Count: 5,475 
• Modeled Residue Count: 626 
• Deposited Residue Count: 636 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chloramphenicol acetyltransferase	A, B, C	212	Vibrio cholerae O1 biovar El Tor str. N16961	Mutation(s): 0  Gene Names: VC_A0300 EC: 2.3.1.28
UniProt
Find proteins for Q9KMN1 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KMN1  Go to UniProtKB:  Q9KMN1

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MPD	D [auth A], J [auth A], Q [auth B], S [auth B], W [auth C]	(4S)-2-METHYL-2,4-PENTANEDIOL C6 H14 O2 SVTBMSDMJJWYQN-YFKPBYRVSA-N
PO4	L [auth A], P [auth B], R [auth B], T [auth C], U [auth C], Y [auth C]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
EDO	E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], M [auth B], N [auth B], O [auth B], V [auth C], X [auth C]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CL	K [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free:  0.188 (Depositor) 
• R-Value Work:  0.163 (Depositor) 
• R-Value Observed: 0.164 (Depositor) 

Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 100.058	α = 90
b = 100.058	β = 90
c = 128.036	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
MOLREP	phasing
HKL-3000	phasing

Structure Validation

Currently 6PUA does not have a validation slider image.

Entry History & Funding Information

Deposition Data

• Released Date: 2019-09-25 
Deposition Author(s): Kim, Y., Maltseva, N., Stam, J., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	--

Revision History  

• Version 1.0: 2019-09-25
  Type: Initial release
  
• Version 1.1: 2019-12-11
  Changes: Database references
• Version 1.2: 2019-12-18
  Changes: Author supporting evidence
• Version 1.3: 2020-02-26
  Changes: Database references
• Version 1.4: 2023-10-11
  Changes: Data collection, Database references, Refinement description
• Version 1.5: 2025-06-18
  Changes: Database references, Structure summary