1c51: Difference between revisions
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'''PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY''' | '''PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY''' | ||
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==About this Structure== | ==About this Structure== | ||
Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C51 OCA]. | |||
==Reference== | ==Reference== | ||
Photosystem I, an improved model of the stromal subunits PsaC, PsaD, and PsaE., Klukas O, Schubert WD, Jordan P, Krauss N, Fromme P, Witt HT, Saenger W, J Biol Chem. 1999 Mar 12;274(11):7351-60. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10066799 10066799] | Photosystem I, an improved model of the stromal subunits PsaC, PsaD, and PsaE., Klukas O, Schubert WD, Jordan P, Krauss N, Fromme P, Witt HT, Saenger W, J Biol Chem. 1999 Mar 12;274(11):7351-60. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10066799 10066799] | ||
[[Category: Fromme, P.]] | [[Category: Fromme, P.]] | ||
[[Category: Jordan, P.]] | [[Category: Jordan, P.]] | ||
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[[Category: Schubert, W D.]] | [[Category: Schubert, W D.]] | ||
[[Category: Witt, H T.]] | [[Category: Witt, H T.]] | ||
[[Category: | [[Category: Core- antenna light-harvesting system]] | ||
[[Category: | [[Category: Helix-bundle membrane protein]] | ||
[[Category: | [[Category: Oxygenic photosynthesis]] | ||
[[Category: | [[Category: Photosynthesis]] | ||
[[Category: | [[Category: Photosynthetic reaction center]] | ||
[[Category: | [[Category: Thermophilic cyanobacterium]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 12:20:08 2008'' | |||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | |||
Revision as of 12:20, 2 May 2008
PHOTOSYNTHETIC REACTION CENTER AND CORE ANTENNA SYSTEM (TRIMERIC), ALPHA CARBON ONLY
OverviewOverview
An improved electron density map of photosystem I (PSI) calculated at 4-A resolution yields a more detailed structural model of the stromal subunits PsaC, PsaD, and PsaE than previously reported. The NMR structure of the subunit PsaE of PSI from Synechococcus sp. PCC7002 (Falzone, C. J., Kao, Y.-H., Zhao, J., Bryant, D. A., and Lecomte, J. T. J. (1994) Biochemistry 33, 6052-6062) has been used as a model to interpret the region of the electron density map corresponding to this subunit. The spatial orientation with respect to other subunits is described as well as the possible interactions between the stromal subunits. A first model of PsaD consisting of a four-stranded beta-sheet and an alpha-helix is suggested, indicating that this subunit partly shields PsaC from the stromal side. In addition to the improvements on the stromal subunits, the structural model of the membrane-integral region of PSI is also extended. The current electron density map allows the identification of the N and C termini of the subunits PsaA and PsaB. The 11-transmembrane alpha-helices of these subunits can now be assigned uniquely to the hydrophobic segments identified by hydrophobicity analyses.
About this StructureAbout this Structure
Full crystallographic information is available from OCA.
ReferenceReference
Photosystem I, an improved model of the stromal subunits PsaC, PsaD, and PsaE., Klukas O, Schubert WD, Jordan P, Krauss N, Fromme P, Witt HT, Saenger W, J Biol Chem. 1999 Mar 12;274(11):7351-60. PMID:10066799 Page seeded by OCA on Fri May 2 12:20:08 2008