1kib
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cytochrome c6 from Arthrospira maxima: an assembly of 24 subunits in the form of an oblate shell
OverviewOverview
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.
About this StructureAbout this Structure
1KIB is a Single protein structure of sequence from Arthrospira maxima with HEM as ligand. Full crystallographic information is available from OCA.
ReferenceReference
Structure of cytochrome c6 from Arthrospira maxima: an assembly of 24 subunits in a nearly symmetric shell., Kerfeld CA, Sawaya MR, Krogmann DW, Yeates TO, Acta Crystallogr D Biol Crystallogr. 2002 Jul;58(Pt 7):1104-10. Epub 2002, Jun 20. PMID:12077429
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