Cytochrome b6-f complex, subunit 8 (IPR005497)

Short name: Cytochrome_b6-f_cplx_su8

Overlapping homologous superfamilies

Family relationships



PetN is a small hydrophobic protein, crucial for cytochrome b6-f complex assembly and/or stability. It is found in bacteria and plants. Cytochrome b6-f complex is composed of 4 large subunits: cytochrome b6, subunit IV (17 kDa polypeptide, petD), cytochrome f and the Rieske protein, as well as 4 small subunits: petG, petL, petM and petN. The complex functions as a dimer. The cytochrome b6-f complex mediates electron transfer between photosystem II (PSII) and photosystem I (PSI) [PMID: 14526088].

GO terms

Biological Process

GO:0017004 cytochrome complex assembly

Molecular Function

GO:0045158 electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity

Cellular Component

GO:0009512 cytochrome b6f complex

Contributing signatures

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