6X7Q

Chloramphenicol acetyltransferase type III in complex with chloramphenicol and acetyl-oxa(dethia)-CoA

• PDB DOI: https://doi.org/10.2210/pdb6X7Q/pdb

• Classification: TRANSFERASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2020-05-30 Released: 2021-06-02 
• Deposition Author(s): Benjamin, A.B., Stunkard, L.M., Ling, J., Nice, J.N., Lohman, J.R.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.68 Å
• R-Value Free: 0.201 
• R-Value Work: 0.159 
• R-Value Observed: 0.161 

Literature

Structures of chloramphenicol acetyltransferase III and Escherichia coli beta-keto-acylsynthase III co-crystallized with partially hydrolysed acetyl-oxa(de-thia)CoA

Benjamin, A.B., Stunkard, L.M., Ling, J., Nice, J.N., Lohman, J.R.

(2023) Acta Crystallogr F Struct Biol Commun : 61-69

• DOI: https://doi.org/10.1107/S2053230X23001206

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: 79.06 kDa 
• Atom Count: 6,530 
• Modelled Residue Count: 638 
• Deposited Residue Count: 645 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chloramphenicol acetyltransferase 3	A, B, C	215	Escherichia coli	Mutation(s): 0  Gene Names: cat3 EC: 2.3.1.28
UniProt
Find proteins for P00484 (Escherichia coli) Explore P00484  Go to UniProtKB:  P00484

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
UTA (Subject of Investigation/LOI)	D [auth A], I [auth B], L [auth C]	acetyl-oxa(dethia)-CoA C23 H38 N7 O18 P3 YTFJZNGIRMRBLL-ZSJPKINUSA-N
CLM	G [auth A], H [auth B], K [auth C]	CHLORAMPHENICOL C11 H12 Cl2 N2 O5 WIIZWVCIJKGZOK-RKDXNWHRSA-N
PG4	F [auth A]	TETRAETHYLENE GLYCOL C8 H18 O5 UWHCKJMYHZGTIT-UHFFFAOYSA-N
PEG	J [auth B]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
ZN	E [auth A], M [auth C]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.68 Å
• R-Value Free: 0.201 
• R-Value Work: 0.159 
• R-Value Observed: 0.161 
• Space Group: P 4₂ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 106.918	α = 90
b = 106.918	β = 90
c = 126.596	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing
ARP/wARP	model building
Coot	model building
PDB_EXTRACT	data extraction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-06-02 
Deposition Author(s): Benjamin, A.B., Stunkard, L.M., Ling, J., Nice, J.N., Lohman, J.R.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R01GM140290

Revision History  

• Version 1.0: 2021-06-02
  Type: Initial release
  
• Version 2.0: 2022-07-20
  Type: Coordinate replacement
  Reason: Sequence discrepancy
  Changes: Advisory, Atomic model, Author supporting evidence, Data collection, Database references, Derived calculations, Polymer sequence, Refinement description, Structure summary
• Version 2.1: 2023-03-08
  Changes: Database references
• Version 2.2: 2023-10-25
  Changes: Data collection, Refinement description