1F4J

STRUCTURE OF TETRAGONAL CRYSTALS OF HUMAN ERYTHROCYTE CATALASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of tetragonal crystals of human erythrocyte catalase.

Safo, M.K.Musayev, F.N.Wu, S.H.Abraham, D.J.Ko, T.P.

(2001) Acta Crystallogr.,Sect.D 57: 1-7


  • PubMed Abstract: 
  • The structure of catalase from human erythrocytes (HEC) was determined in tetragonal crystals of space group I4(1) by molecular-replacement methods, using the orthorhombic crystal structure as a search model. It was then refined in a unit cell of dim ...

    The structure of catalase from human erythrocytes (HEC) was determined in tetragonal crystals of space group I4(1) by molecular-replacement methods, using the orthorhombic crystal structure as a search model. It was then refined in a unit cell of dimensions a = b = 203.6 and c = 144.6 A, yielding R and R(free) of 0.196 and 0.244, respectively, for all data at 2.4 A resolution. A major difference of the HEC structure in the tetragonal crystal compared with the orthorhombic structure was the omission of a 20-residue N-terminal segment corresponding to the first exon of the human catalase gene. The overall structures were otherwise identical in both crystal forms. The NADPH-binding sites were empty in all four subunits and bound water molecules were observed at the active sites. The structure of the C-terminal segment, which corresponds to the last exon, remained undetermined. The tetragonal crystals showed a pseudo-4(1)22 symmetry in molecular packing. Two similar types of lattice contact interfaces between the HEC tetramers were observed; they were related by the pseudo-dyad axes.


    Related Citations: 
    • 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


    Organizational Affiliation

    Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, Richmond, VA 23219, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CATALASE
A, B, C, D
527Homo sapiensMutation(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
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download SDF File 
Download CCD File 
A, B, C, D
PROTOPORPHYRIN IX CONTAINING FE
HEME
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.196 
  • Space Group: I 41
Unit Cell:
Length (Å)Angle (°)
a = 203.600α = 90.00
b = 203.600β = 90.00
c = 144.600γ = 90.00
Software Package:
Software NamePurpose
bioteXdata reduction
CNSrefinement
AMoREphasing
bioteXdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-06-21
    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