All complexes
A detailed cartoon model (revised, Nov. 2011) of the Z-scheme, legends:

Short form:
A detailed cartoon model of the Z-scheme including structural information on the organisation of the protein complexes involved in electron (e-) and proton (H+) transport within the thylakoid membrane of green plants (eukaryotes).
Relevant 3D information has been represented in 2D as reasonably as possible i.e. Subunit-subunit positioning, relative spatial positioning of co-factors. The electron transport scheme is based on a wide range of known literature, including reviews and text book figures, as well as numerous valuable discussions with many colleagues in the field.
Courtesy of Jon Nield, Queen Mary, University of London, UK;
freely available from this page

Long form:
Cartoon model depicting the molecular machinery involved in the Z-scheme of oxygenic photosynthesis.
Structural information from e.g. Guskov et al., (2009; PSII); Stroebel et al., (2003; Cyt b
6f); Jordan, et al., (2001; PSI); Amunts et al., (2007; LHCI-PSI).
Abbreviations: Lhc
a/b proteins: Light (hv) is captured and channelled to the P680 reaction centre of PSII, or the P700 reaction centre of PSI. PSII: In caps= psb gene products; P680= primary donor; Phe= pheophytin; QA,QB= secondary plastoquinone acceptors; PQ= plastoquinone. Cyt b6f: Caps= pet gene products; Cyt bH= high potential; Cyt bL= low potential; ISP= a ‘mobile’ Rieske Iron-Sulphur binding Protein, able to share its intrinsic/extrinsic domains across each monomer in the dimer, hence a/b; Note: total of 4 haem centres per monomer (Fe), including a new ‘haem ci’= possible link for cyclic e- transport; Q= quinone, Car= carotenoid, Chla= Chlorophyll a molecule. PSI: In caps= psa gene products; P700= primary donor; PC= plastocyanin; A0 (Chla), A1 (phylloquinone)= primary and intermediate e- acceptors; FA, FB and FX= bound FeS centres; Fd= ferredoxin. A, A' accessory chls are not shown. ATP synthase: oscp (oligomycin sensitivity conferring polypeptide).

Courtesy of Jon Nield, Queen Mary, University of London, UK; freely available from