Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 339551.75 
• Atom Count: 23156 
• Residue Count: 3012 
• Unique protein chains: 1

1IPH

STRUCTURE OF CATALASE HPII FROM ESCHERICHIA COLI

• DOI: 10.2210/pdb1IPH/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Escherichia coli (strain K12)


• Deposited: 1995-12-31 Released: 1997-09-04 
• Deposition Author(s): Bravo, J., Loewen, P.C., Fita, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.8 Å
• R-Value Work: 0.200 

Literature

Crystal structure of catalase HPII from Escherichia coli.

Bravo, J., Verdaguer, N., Tormo, J., Betzel, C., Switala, J., Loewen, P.C., Fita, I.

(1995) Structure 3: 491-502

• PubMed: 7663946 
• Also Cited By: 1CF9


• PubMed Abstract: 
  

Catalase is a ubiquitous enzyme present in both the prokaryotic and eukaryotic cells of aerobic organisms. It serves, in part, to protect the cell from the toxic effects of small peroxides. Escherichia coli produces two catalases, HPI and HPII, that are quite distinct from other catalases in physical structure and catalytic properties. HPII, studied in this work, is encoded by the katE gene, and has been characterized as an oligomeric, monofunctional catalase containing one cis-heme d prosthetic group per subunit of 753 residues.

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Related Citations: 

• 2.8 A Crystal Structure of Catalase Hpii from Escherichia Coli
  Bravo, J.,Verdaguer, N.,Tormo, J.,Betzel, C.,Switala, J.,Loewen, P.C.,Fita, I.
  (1993) Joint Ccp4 Esf-Eacbm Newsletter on Protein Crystallography 28: 79
• Crystallization and Preliminary X-Ray Diffraction Analysis of Catalase Hpii from Escherichia Coli
  Tormo, J.,Fita, I.,Switala, J.,Loewen, P.C.
  (1990) J.Mol.Biol. 213: 219
• The Refined Structure of Beef Liver Catalase at 2.5 A Resolution
  Fita, I.,Silva, A.M.,Murthy, M.R.N.,Rossmann, M.G.
  (1986) Acta Crystallogr.,Sect.B 42: 497




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Organizational Affiliation: 

Departamento de Ingeniería Química, Universidad Politécnica de Catalunña, Barcelona, Spain.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
CATALASE HPII	A, B, C, D	753	Escherichia coli (strain K12)	Mutation(s): 0  Gene Names: katE EC: 1.11.1.6
Find proteins for P21179 (Escherichia coli (strain K12)) Go to UniProtKB:  P21179

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
HEM	A, B, C, D	PROTOPORPHYRIN IX CONTAINING FE HEME C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.8 Å
• R-Value Work: 0.200 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 95.200	α = 90.00
b = 134.700	β = 109.40
c = 124.400	γ = 90.00

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1995-12-31 
• Released Date: 1997-09-04 
• Deposition Author(s): Bravo, J., Loewen, P.C., Fita, I.

Revision History 

• Version 1.0: 1997-09-04
  Type: Initial release
• Version 1.1: 2008-03-24
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Derived calculations, Version format compliance