1XP3 | pdb_00001xp3

Crystal Structure of Endonuclease IV (BA4508) from Bacillus anthracis at 2.57A Resolution.

• PDB DOI: https://doi.org/10.2210/pdb1XP3/pdb

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


• Deposited: 2004-10-08 Released: 2005-10-04 
• Deposition Author(s): Fogg, M.J., Levdikov, V.M., Blagova, E.V., Brannigan, J.A., Wilkinson, A.J., Wilson, K.S., Structural Proteomics in Europe (SPINE)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.57 Å
• R-Value Free: 
  0.228 (Depositor), 0.228 (DCC) 
• R-Value Work: 
  0.151 (Depositor), 0.158 (DCC) 
• R-Value Observed: 
  0.155 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of Endonuclease IV (BA4508) from Bacillus anthracis at 2.57A Resolution.

Fogg, M.J., Levdikov, V.M., Blagova, E.V., Brannigan, J.A., Wilkinson, A.J., Wilson, K.S.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 34.42 kDa 
• Atom Count: 2,534 
• Modeled Residue Count: 297 
• Deposited Residue Count: 307 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
endonuclease IV	A	307	Bacillus anthracis	Mutation(s): 0  Gene Names: nfo EC: 3.1.21.2
UniProt
Find proteins for Q81LV1 (Bacillus anthracis) Explore Q81LV1  Go to UniProtKB:  Q81LV1

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	E [auth A], F [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ZN	B [auth A], C [auth A], D [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.57 Å
• R-Value Free:  0.228 (Depositor), 0.228 (DCC) 
• R-Value Work:  0.151 (Depositor), 0.158 (DCC) 
• R-Value Observed: 0.155 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 97.886	α = 90
b = 55.39	β = 89.43
c = 64.972	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-10-04 
Deposition Author(s): Fogg, M.J., Levdikov, V.M., Blagova, E.V., Brannigan, J.A., Wilkinson, A.J., Wilson, K.S., Structural Proteomics in Europe (SPINE)

Revision History  

• Version 1.0: 2005-10-04
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Refinement description, Version format compliance
• Version 1.3: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description