Cytochrome f: Difference between revisions

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The cytochrome b6f complex contains 4 subunits: Cytf, Cytb6, Rieske iron-sulfur protein and subunit IV.  Cytf has an internal chain of water molecules conserved in all its 3D structures.  The water chain is assumed to be a proton wire.
The cytochrome b6f complex contains 4 subunits: Cytf, Cytb6, Rieske iron-sulfur protein and subunit IV.  Cytf has an internal chain of water molecules conserved in all its 3D structures.  The water chain is assumed to be a proton wire.


<scene name='48/484838/Cv/9'>Heme binding site</scene> in Turnip cytochrome f
<scene name='48/484838/Cv/12'>Heme binding site</scene> in Turnip cytochrome f


<scene name='48/484838/Cv/10'>Covalent binding of heme to 2 Cys residues</scene>
<scene name='48/484838/Cv/13'>Covalent binding of heme to 2 Cys residues</scene>


<scene name='48/484838/Cv/11'>Fe coordination site</scene> (PDB entry [[1ctm]]).
<scene name='48/484838/Cv/14'>Fe coordination site</scene> (PDB entry [[1ctm]]).
</StructureSection>
</StructureSection>
==3D structures of cytochrome f==
==3D structures of cytochrome f==

Revision as of 10:59, 18 February 2019


Cytochrome f (Cytf) is the largest subunit of the cytochrome b6f complex. This complex transfers electrons from plastocyanin to the two reaction center complexes of oxygenic photosynthetic membranes.[1]


Structural highlights

The cytochrome b6f complex contains 4 subunits: Cytf, Cytb6, Rieske iron-sulfur protein and subunit IV. Cytf has an internal chain of water molecules conserved in all its 3D structures. The water chain is assumed to be a proton wire.

in Turnip cytochrome f

(PDB entry 1ctm).

Turnip heme-containing cytochrome f (PDB entry 1ctm)

Drag the structure with the mouse to rotate

3D structures of cytochrome f3D structures of cytochrome f

Updated on 18-February-2019

ReferencesReferences

  1. Prince RC, George GN. Cytochrome f revealed. Trends Biochem Sci. 1995 Jun;20(6):217-8. PMID:7631417

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Michal Harel, Alexander Berchansky, Joel L. Sussman