1gxi
From Proteopedia
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| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1gxi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gxi OCA], [http://www.ebi.ac.uk/pdbsum/1gxi PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1gxi RCSB]</span> | ||
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[[Category: Ochsenbein, F.]] | [[Category: Ochsenbein, F.]] | ||
[[Category: Savarin, P.]] | [[Category: Savarin, P.]] | ||
| - | [[Category: photosynthesis | + | [[Category: photosynthesis,photosystem i,psae sub-unit,thylakoid]] |
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| - | ''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 20:53:29 2008'' |
Revision as of 17:53, 30 March 2008
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
PSAE SUB-UNIT OF THE PHOTOSYSTEM I OF THE CYANOBACTERIUM SYNECHOCYSTIS SP. PCC 6803
Overview
PsaE is a small peripheral subunit of photosystem I (PSI) that is very accessible to the surrounding medium. It plays an essential role in optimizing the interactions with the soluble electron acceptors of PSI, ferredoxin and flavodoxin. The solution structure of PsaE from the cyanobacterium Synechocystis sp. PCC 6803 has been investigated by NMR with a special emphasis on its protein dynamic properties. PsaE is characterized by a well-defined central core that consists of a five-stranded beta-sheet (+1, +1, +1, -4x). Four loops (designated the A-B, B-C, C-D, and D-E loops) connect these beta-strands, the overall resulting structure being that of an SH3-like domain. As compared to previously determined PsaE structures, conformational differences are observed in the first three loops. The flexibility of the loops was investigated using (15)N relaxation experiments. This flexibility is small in amplitude for the A-B and B-C loops, but is large for the C-D loop, particularly in the region corresponding to the missing sequence of Nostoc sp. PCC 8009. The plasticity of the connecting loops in the free subunit is compared to that when bound to the PSI and discussed in relation to the insertion process and the function(s) of PsaE.
About this Structure
1GXI is a Single protein structure of sequence from Synechocystis sp.. Full crystallographic information is available from OCA.
Reference
Solution NMR structure and backbone dynamics of the PsaE subunit of photosystem I from Synechocystis sp. PCC 6803., Barth P, Savarin P, Gilquin B, Lagoutte B, Ochsenbein F, Biochemistry. 2002 Nov 26;41(47):13902-14. PMID:12437347
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