2A9E

Helicobacter pylori catalase compound I

• PDB DOI: https://doi.org/10.2210/pdb2A9E/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Helicobacter pylori
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2005-07-11 Released: 2006-06-20 
• Deposition Author(s): Loewen, P.C., Carpena, X., Fita, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.76 Å
• R-Value Free: 0.178 
• R-Value Work: 0.137 
• R-Value Observed: 0.139 

Starting Model: experimental

Literature

Helicobacter pylori catalase compound I

Loewen, P.C., Carpena, X., Fita, I.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 118.91 kDa 
• Atom Count: 9,112 
• Modelled Residue Count: 982 
• Deposited Residue Count: 1,010 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
KatA Catalase	A, B	505	Helicobacter pylori	Mutation(s): 4  Gene Names: katA EC: 1.11.1.6
UniProt
Find proteins for P77872 (Helicobacter pylori (strain ATCC 700392 / 26695)) Explore P77872  Go to UniProtKB:  P77872

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	D [auth A], F [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
ACT	C [auth A]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M
O	E [auth A], G [auth B]	OXYGEN ATOM O XLYOFNOQVPJJNP-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MHO	A, B	L-PEPTIDE LINKING	C5 H11 N O3 S		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.76 Å
• R-Value Free: 0.178 
• R-Value Work: 0.137 
• R-Value Observed: 0.139 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.385	α = 90
b = 154.286	β = 90
c = 95.808	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-06-20 
Deposition Author(s): Loewen, P.C., Carpena, X., Fita, I.

Revision History  

• Version 1.0: 2006-06-20
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Derived calculations, Refinement description, Version format compliance
• Version 1.3: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.4: 2024-10-09
  Changes: Structure summary