1pcr
From Proteopedia
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|PDB= 1pcr |SIZE=350|CAPTION= <scene name='initialview01'>1pcr</scene>, resolution 2.65Å | |PDB= 1pcr |SIZE=350|CAPTION= <scene name='initialview01'>1pcr</scene>, resolution 2.65Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=BCL:BACTERIOCHLOROPHYLL+A'>BCL</scene>, <scene name='pdbligand=BPH:BACTERIOPHEOPHYTIN+A'>BPH</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=LDA:LAURYL+DIMETHYLAMINE-N-OXIDE'>LDA</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SPO:SPHEROIDENE'>SPO</scene>, <scene name='pdbligand=U10:UBIQUINONE-10'>U10</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1pcr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pcr OCA], [http://www.ebi.ac.uk/pdbsum/1pcr PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1pcr RCSB]</span> | ||
}} | }} | ||
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[[Category: Fritzsch, G.]] | [[Category: Fritzsch, G.]] | ||
[[Category: Michel, H.]] | [[Category: Michel, H.]] | ||
| - | [[Category: BCL]] | ||
| - | [[Category: BPH]] | ||
| - | [[Category: FE]] | ||
| - | [[Category: LDA]] | ||
| - | [[Category: PO4]] | ||
| - | [[Category: SPO]] | ||
| - | [[Category: U10]] | ||
[[Category: photosynthetic reaction center]] | [[Category: photosynthetic reaction center]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:57:57 2008'' |
Revision as of 19:57, 30 March 2008
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| , resolution 2.65Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , , , , | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STRUCTURE OF THE PHOTOSYNTHETIC REACTION CENTRE FROM RHODOBACTER SPHAEROIDES AT 2.65 ANGSTROMS RESOLUTION: COFACTORS AND PROTEIN-COFACTOR INTERACTIONS
Overview
BACKGROUND: Photosynthetic reaction centres (RCs) catalyze light-driven electron, transport across photosynthetic membranes. The photosynthetic bacterium Rhodobacter, sphaeroides is often used for studies of RCs, and three groups have determined the structure of its reaction centre. There are discrepancies between these structures, however, and to resolve these we have determined the structure to higher resolution than before, using a new crystal form. RESULTS: The new structure provides a more detailed description of the Rb. sphaeroides RC, and allows us to compare it with the structure of the RC from Rhodopseudomonas viridis. We find no evidence to support most of the published differences in cofactor binding between the RCs from Rps. viridis and Rb. sphaeroides. Generally, the mode of cofactor binding is conserved, particularly along the electron transfer pathway. Substantial differences are only found at ring V of one bacteriochlorophyll of the 'special pair' and for the secondary quinone, QB. A water chain with a length of about 23 A including 14 water molecules extends from the QB to the cytoplasmic side of the RC. CONCLUSIONS: The cofactor arrangement and the mode of binding to the protein seem to be very similar among the non-sulphur bacterial photosynthetic RCs. The functional role of the displaced QB molecule, which might be present as quinol, rather than quinone, is not yet clear. The newly discovered water chain to the QB binding site suggests a pathway for the protonation of the secondary quinone QB.
About this Structure
1PCR is a Protein complex structure of sequences from Rhodobacter sphaeroides. Full crystallographic information is available from OCA.
Reference
Structure of the photosynthetic reaction centre from Rhodobacter sphaeroides at 2.65 A resolution: cofactors and protein-cofactor interactions., Ermler U, Fritzsch G, Buchanan SK, Michel H, Structure. 1994 Oct 15;2(10):925-36. PMID:7866744
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