Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 209.91 kDa 
• Atom Count: 14410 
• Residue Count: 1793 
• Unique protein chains: 1

4R04

Clostridium difficile Toxin A (TcdA)

• DOI: 10.2210/pdb4R04/pdb

• Classification: TRANSFERASE
• Organism(s): Clostridioides difficile
• Mutation(s): No 


• Deposited: 2014-07-29 Released: 2016-01-06 
• Deposition Author(s): Lacy, D.B., Spiller, B.W., Rutherford, S.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.26 Å
• R-Value Free: 0.249 
• R-Value Work: 0.221 
• R-Value Observed: 0.222 

Literature

Glucosyl Transferase Structure

Lacy, D.B., Spiller, B.W., Rutherford, S.A.

(2016) Nat Microbiol 

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Toxin A	A	1838	Clostridioides difficile	Mutation(s): 0  Gene Names: Clostridium difficile, tcdA, toxA EC: 3.4.22
Find proteins for P16154 (Clostridioides difficile) Go to UniProtKB:  P16154

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.26 Å
• R-Value Free: 0.249 
• R-Value Work: 0.221 
• R-Value Observed: 0.222 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 303.49	α = 90
b = 124.54	β = 97.5
c = 75.95	γ = 90

Software Package:

Software Name	Purpose
SHARP	phasing
PHENIX	refinement
XDS	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-07-29 
• Released Date: 2016-01-06 
Deposition Author(s): Lacy, D.B., Spiller, B.W., Rutherford, S.A.

Revision History 

• Version 1.0: 2016-01-06
  Type: Initial release