4H2A | pdb_00004h2a

Crystal structure of wild type protective antigen to 1.62 A (pH 7.5)

• PDB DOI: https://doi.org/10.2210/pdb4H2A/pdb

• Classification: TOXIN
• Organism(s): Bacillus anthracis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2012-09-12 Released: 2013-09-25 
• Deposition Author(s): Baker, P.J., Sorrell, F.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.62 Å
• R-Value Free: 
  0.219 (Depositor), 0.223 (DCC) 
• R-Value Work: 
  0.187 (Depositor), 0.194 (DCC) 
• R-Value Observed: 
  0.189 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of wild type protective antigen to 1.62 A (pH 7.5)

Sorrell, F.J., Rodgers, H.F., Baker, P.J., Chen, B.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content 

• Total Structure Weight: 83.1 kDa 
• Atom Count: 6,195 
• Modeled Residue Count: 704 
• Deposited Residue Count: 735 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protective antigen	A	735	Bacillus anthracis	Mutation(s): 0  Gene Names: pagA, pag, pXO1-110, BXA0164, GBAA_pXO1_0164
UniProt
Find proteins for P13423 (Bacillus anthracis) Explore P13423  Go to UniProtKB:  P13423

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	B [auth A], C [auth A], D [auth A], E [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CA	F [auth A], G [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.62 Å
• R-Value Free:  0.219 (Depositor), 0.223 (DCC) 
• R-Value Work:  0.187 (Depositor), 0.194 (DCC) 
• R-Value Observed: 0.189 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.05	α = 90
b = 94.09	β = 90
c = 117.39	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
XDS	data reduction
XSCALE	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-09-25 
Deposition Author(s): Baker, P.J., Sorrell, F.J.

Revision History  

• Version 1.0: 2013-09-25
  Type: Initial release
  
• Version 1.1: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description