1vf5
From Proteopedia
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Crystal Structure of Cytochrome b6f Complex from M.laminosus
Overview
The cytochrome b6f complex provides the electronic connection between the photosystem I and photosystem II reaction centers of oxygenic photosynthesis and generates a transmembrane electrochemical proton gradient for adenosine triphosphate synthesis. A 3.0 angstrom crystal structure of the dimeric b6f complex from the thermophilic cyanobacterium Mastigocladus laminosus reveals a large quinone exchange cavity, stabilized by lipid, in which plastoquinone, a quinone-analog inhibitor, and a novel heme are bound. The core of the b6f complex is similar to the analogous respiratory cytochrome bc1 complex, but the domain arrangement outside the core and the complement of prosthetic groups are strikingly different. The motion of the Rieske iron-sulfur protein extrinsic domain, essential for electron transfer, must also be different in the b6f complex.
About this Structure
1VF5 is a Protein complex structure of sequences from Mastigocladus laminosus with , , , , , and as ligands. This structure supersedes the now removed PDB entry 1UM3. Full crystallographic information is available from OCA.
Reference
Structure of the cytochrome b6f complex of oxygenic photosynthesis: tuning the cavity., Kurisu G, Zhang H, Smith JL, Cramer WA, Science. 2003 Nov 7;302(5647):1009-14. Epub 2003 Oct 2. PMID:14526088
Page seeded by OCA on Thu Feb 21 15:34:37 2008
Categories: Mastigocladus laminosus | Protein complex | Cramer, W A. | Kurisu, G. | Smith, J L. | Zhang, H. | BCR | CLA | FES | HEM | OPC | PL9 | TDS | Electron transfer complex | Membrane protein complex | Photosynthesis
