Cytochrome b6-f complex Fe-S subunit (IPR014909)

Short name: Cyt_b6-f_cplx_Fe-S_su

Overlapping homologous superfamilies

Domain relationships



The cytochrome b6-f complex mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions. The cytochrome b6-f complex has 4 large subunits, these are: cytochrome b6, subunit IV (17kDa polypeptide, PetD), cytochrome f and the Rieske protein, while the 4 small subunits are: PetG, PetL, PetM and PetN. The complex functions as a dimer.

This protein corresponds to the alpha helical transmembrane domain of the cytochrome b6-f complex Rieske iron-sulphur subunit.

GO terms

Biological Process

GO:0055114 oxidation-reduction process

Molecular Function

GO:0051537 2 iron, 2 sulfur cluster binding
GO:0009496 plastoquinol--plastocyanin reductase activity

Cellular Component

GO:0042651 thylakoid membrane

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.