1KIB

cytochrome c6 from Arthrospira maxima: an assembly of 24 subunits in the form of an oblate shell


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of cytochrome c6 from Arthrospira maxima: an assembly of 24 subunits in a nearly symmetric shell.

Kerfeld, C.A.Sawaya, M.R.Krogmann, D.W.Yeates, T.O.

(2002) Acta Crystallogr D Biol Crystallogr 58: 1104-1110

  • DOI: 10.1107/s0907444902006534
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Cytochrome c(6) from the cyanobacterium Arthrospira maxima is present in isoforms that can be resolved by size-exclusion chromatography. One isoform crystallized in space group I4(1)32 with eight protein molecules in the asymmetric unit and a total o ...

    Cytochrome c(6) from the cyanobacterium Arthrospira maxima is present in isoforms that can be resolved by size-exclusion chromatography. One isoform crystallized in space group I4(1)32 with eight protein molecules in the asymmetric unit and a total of 384 molecules in the unit cell. Within the crystal, the molecules are arranged as clusters of 24 cytochrome c(6) molecules. Each cluster is a hollow shell with approximate octahedral (432) symmetry. Structural and biochemical studies of cytochrome c(6) isolated from other cyanobacteria and algae have led to the suggestion that cytochrome c(6) forms oligomers. The cytochrome c(6) complex described here is the largest assembly of cytochrome c(6) molecules observed thus far.


    Related Citations: 
    • Structures of Cytochrome c-549 and Cytochrome c6 from the Cyanobacterium Arthrospira maxima
      Sawaya, M.R., Krogmann, D.W., Serag, A., Ho, K.K., Yeates, T.O., Kerfeld, C.A.
      (2001) Biochemistry 40: 9215

    Organizational Affiliation

    Molecular Biology Institute, University of California, Los Angeles, Box 951570, 90095-1570, USA. kerfeld@mbi.ucla.edu



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cytochrome c6A, B, C, D, E, F, G, H89Limnospira maximaMutation(s): 0 
Gene Names: petJ
Find proteins for P00118 (Limnospira maxima)
Explore P00118 
Go to UniProtKB:  P00118
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.205 
  • Space Group: I 41 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 237α = 90
b = 237β = 90
c = 237γ = 90
Software Package:
Software NamePurpose
EPMRphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-07-03
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance