Cytochrome b6

Function

Cytochrome b6 (Cytb6) is found in plant chloroplasts and cyanobacteria. Cytb6 is analogous to cytochrome b found in eukaryotic mitochondria and aerobic prokaryotes. Cytb6 is a component of cytochrome b6f complex. It is involved in electron transport and the generation of ATP^[1].

Cytochrome b6 (grey) as part of the b6f complex containing subunits 1,4,5,6,7,8, heme, Fe2S2 cluster and chlorophyl A (PDB code 4h44)

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3D structures of cytochrome b63D structures of cytochrome b6

Updated on 23-February-2025

6rqf, 7qrm, 7zyv, 9es7 - sCytb6 in Cytb6f complex – spinach – Cryo EM
9es9 - sCytb6 in Cytb6f complex+ inhibitor – Cryo EM
2e74, 4i7z, 1vf5, 4pv1 - MlCytb6 + Cytb6f subunits 4,5,6,7,8,iron-sulfur + apocytochrome f - Masticogladus laminosus
2e76, 4h13, 4pv1 - MlCytb6 + Cytb6f subunits 4,5,6,7,8,iron-sulfur + apocytochrome f + stigmatellin derivative
2e75, 4h0l, 2d2c - MlCytb6 + Cytb6f subunits 4,5,6,7,8,iron-sulfur + apocytochrome f + quinoline derivative
1q90 - Cytb6 + Cytb6f subunits 4,5,6,7,8,iron-sulfur + apocytochrome f - Chlamydomonas reinhardtii
2zt9, 4h44, 4ogq - Cytb6 + Cytb6f subunits 4,5,6,7,8,iron-sulfur + apocytochrome f - Nostoc
3azc - Cytb6f iron-sulfur subunit - Thermosynechococcus elongatus
8hn2 - Cytb6f iron-sulfur subunit – Chlorobaculum tepidum
5cxm - SyCytb6f iron-sulfur subunit - Synechocystis
7r0w, 7zxy - SyCytb6 in Cytb6f complex – Cryo EM

ReferencesReferences

↑ Wenk SO, Schneider D, Boronowsky U, Jager C, Klughammer C, de Weerd FL, van Roon H, Vermaas WF, Dekker JP, Rogner M. Functional implications of pigments bound to a cyanobacterial cytochrome b6f complex. FEBS J. 2005 Jan;272(2):582-92. doi: 10.1111/j.1742-4658.2004.04501.x. PMID:15654895 doi:http://dx.doi.org/10.1111/j.1742-4658.2004.04501.x

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Michal Harel

[1] Wenk SO, Schneider D, Boronowsky U, Jager C, Klughammer C, de Weerd FL, van Roon H, Vermaas WF, Dekker JP, Rogner M. Functional implications of pigments bound to a cyanobacterial cytochrome b6f complex. FEBS J. 2005 Jan;272(2):582-92. doi: 10.1111/j.1742-4658.2004.04501.x. PMID:15654895 doi:http://dx.doi.org/10.1111/j.1742-4658.2004.04501.x

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