Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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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 (software)

Macromolecule Content

• Total Structure Weight: 241813.94 
• Atom Count: 16225 
• Residue Count: 2108 
• Unique protein chains: 1

1QQW

CRYSTAL STRUCTURE OF HUMAN ERYTHROCYTE CATALASE

• DOI: 10.2210/pdb1QQW/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Homo sapiens


• Deposited: 1999-06-09 Released: 1999-06-14 
• Deposition Author(s): Ko, T.P., Safo, M.K., Musayev, F.N., Wang, C., Wu, S.H., Abraham, D.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.272 
• R-Value Work: 0.206 

Literature

Structure of human erythrocyte catalase.

Ko, T.P., Safo, M.K., Musayev, F.N., Di Salvo, M.L., Wang, C., Wu, S.H., Abraham, D.J.

(2000) Acta Crystallogr.,Sect.D 56: 241-245

• PubMed: 10666617 


• PubMed Abstract: 
  

Catalase (E.C. 1.11.1.6) was purified from human erythrocytes and crystallized in three different forms: orthorhombic, hexagonal and tetragonal. The structure of the orthorhombic crystal form of human erythrocyte catalase (HEC), with space group P2(1)2(1)2(1) and unit-cell parameters a = 84.9, b = 141.7, c = 232.5 A, was determined and refined with 2.75 A resolution data. Non-crystallographic symmetry restraints were employed and the resulting R value and R(free) were 0.206 and 0.272, respectively. The overall structure and arrangement of HEC molecules in the orthorhombic unit cell were very similar to those of bovine liver catalase (BLC). However, no NADPH was observed in the HEC crystal and a water was bound to the active-site residue His75. Conserved lattice interactions suggested a common growth mechanism for the orthorhombic crystals of HEC and BLC.

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Organizational Affiliation: 

Institute of Biological Chemistry, Academia Sinica, Taipei 11529, Taiwan. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
CATALASE	A, B, C, D	527	Homo sapiens	Mutation(s): 0  Gene Names: CAT EC: 1.11.1.6
Find proteins for P04040 (Homo sapiens) Go to Gene View: CAT Go to UniProtKB:  P04040

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: 2.75 Å
• R-Value Free: 0.272 
• R-Value Work: 0.206 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 84.904	α = 90.00
b = 141.674	β = 90.00
c = 232.460	γ = 90.00

Software Package:

Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
bioteX	data scaling
bioteX	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-06-09 
• Released Date: 1999-06-14 
• Deposition Author(s): Ko, T.P., Safo, M.K., Musayev, F.N., Wang, C., Wu, S.H., Abraham, D.J.

Revision History 

• Version 1.0: 1999-06-14
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2017-10-04
  Type: Refinement description