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<StructureSection load='1ctm' size='450' side='right' caption='Turnip heme-containing cytochrome f (PDB entry [[1ctm]])' scene='48/484838/Cv/8'>
<StructureSection load='' size='350' side='right' caption='Turnip heme-containing cytochrome f (PDB entry [[1ctm]])' scene='48/484838/Cv/8'>


'''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.<ref>PMID:7631417</ref>
'''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.<ref>PMID:7631417</ref>


 
See also [[Hemeproteins]].


== Structural highlights ==
== Structural highlights ==
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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>
==3D structures of cytochrome f==


Updated on {{REVISIONDAY2}}-{{MONTHNAME|{{REVISIONMONTH}}}}-{{REVISIONYEAR}}
==3D structures of cytochrome f==
{{#tree:id=OrganizedByTopic|openlevels=0|
[[Cytochrome f 3D structures]]


*Cytf
</StructureSection>
 
**[[1ctm]], [[1hcz]] – tCytf – turnip<br />
**[[1cfm]] – CrCytf – ''Chlamydomonas reinhardtii''<br />
**[[1e2v]], [[1e2w]], [[1e2z]] – CrCytf (mutant)<br />
**[[1ewh]] - CrCytf soluble domain<br />
**[[1ci3]] - Cytf soluble domain – ''Phormidium laminosum''
 
*Cytf complex with plastocyanin
 
**[[2pcf]] – Cytf soluble domain + plastocyanin – spinach – NMR<br />
**[[1tu2]] - Cytf soluble domain + plastocyanin – Nostoc – NMR<br />
**[[1tkw]] - tCytf soluble domain + plastocyanin – NMR<br />
**[[2jxm]] - Cytf soluble domain + plastocyanin – ''Prochlorothrix hollandica'' – NMR
 
*Full cytochrome b6f containing Cytf


**[[1q90]] – CrCytf <br />
**[[1vf5]], [[2e7r]] - MlCytf – ''Mastigocladus laminosus''<br />
**[[2d2c]] - MlCytf + dibromo-methyl-isopropylbenzoquinone<br />
**[[2e75]] - MlCytf + nonyl-hydroxyquinoline oxide<br />
**[[2e76]] - MlCytf + tridecyl-stigmatellin<br />
**[[2zt9]] - Cytf - Nostoc
}}
== References ==
== References ==
<references/>
<references/>
[[Category: Topic Page]]
[[Category: Topic Page]]

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

Michal Harel, Alexander Berchansky, Joel L. Sussman
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