1psf

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[[Image:1psf.gif|left|200px]]
 
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==THE THREE-DIMENSIONAL SOLUTION STRUCTURE OF PSAE FROM THE CYANOBACTERIUM SYNECHOCOCCUS SP. STRAIN PCC 7002: A PHOTOSYSTEM I PROTEIN THAT SHOWS STRUCTURAL HOMOLOGY WITH SH3 DOMAINS==
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The line below this paragraph, containing "STRUCTURE_1psf", creates the "Structure Box" on the page.
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<StructureSection load='1psf' size='340' side='right'caption='[[1psf]]' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1psf]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechococcus_sp._PCC_7002 Synechococcus sp. PCC 7002]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PSF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PSF FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1psf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1psf OCA], [https://pdbe.org/1psf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1psf RCSB], [https://www.ebi.ac.uk/pdbsum/1psf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1psf ProSAT]</span></td></tr>
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{{STRUCTURE_1psf| PDB=1psf | SCENE= }}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/PSAE_SYNP2 PSAE_SYNP2] Stabilizes the interaction between PsaC and the PSI core, assists the docking of the ferredoxin to PSI and interacts with ferredoxin-NADP oxidoreductase.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ps/1psf_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1psf ConSurf].
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<div style="clear:both"></div>
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'''THE THREE-DIMENSIONAL SOLUTION STRUCTURE OF PSAE FROM THE CYANOBACTERIUM SYNECHOCOCCUS SP. STRAIN PCC 7002: A PHOTOSYSTEM I PROTEIN THAT SHOWS STRUCTURAL HOMOLOGY WITH SH3 DOMAINS'''
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==See Also==
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*[[Photosystem I 3D structures|Photosystem I 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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PsaE is a 69 amino acid polypeptide from photosystem I present on the stromal side of the thylakoid membrane. The three-dimensional solution structure of this protein from the cyanobacterium Synechococcus sp. strain PCC 7002 was determined at pH 5.8 and room temperature using over 900 experimental restraints derived from two- and three-dimensional NMR experiments. The structure is comprised of a well-defined five-stranded beta-sheet with (+1, +1, +1, -4 alpha) topology. There is no helical region except for a single turn of 3(10) helix between the beta D and beta E strands. PsaE also exhibits a large unrestrained loop spanning residues 42-56. A comparison to known protein structures revealed similarity with the Src homology 3 (SH3) domain, a membrane-associated protein involved in signal transduction in eukaryotes. The match is remarkable as 47 of the alpha-carbons of PsaE can be superimposed onto those of the SH3 domain from chicken brain alpha-spectrin with a root-mean-square deviation of 2.3 A. Although the amino acid sequences have low identity and the loops are different in both proteins, the topology of the beta-sheet and the 3(10) turn is conserved. SH3 domains from other sources show a similar structural homology. The structure of PsaE was used to suggest approaches for elucidating its roles within photosystem I.
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[[Category: Large Structures]]
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[[Category: Synechococcus sp. PCC 7002]]
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==About this Structure==
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[[Category: Bryant DA]]
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1PSF is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Synechococcus_sp. Synechococcus sp.]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PSF OCA].
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[[Category: Falzone CJ]]
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[[Category: Kao Y-H]]
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==Reference==
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[[Category: Lecomte JTJ]]
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Three-dimensional solution structure of PsaE from the cyanobacterium Synechococcus sp. strain PCC 7002, a photosystem I protein that shows structural homology with SH3 domains., Falzone CJ, Kao YH, Zhao J, Bryant DA, Lecomte JT, Biochemistry. 1994 May 24;33(20):6052-62. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8193119 8193119]
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[[Category: Zhao J]]
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[[Category: Single protein]]
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[[Category: Synechococcus sp.]]
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[[Category: Bryant, D A.]]
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[[Category: Falzone, C J.]]
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[[Category: Kao, Y H.]]
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[[Category: Lecomte, J T.J.]]
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[[Category: Zhao, J.]]
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[[Category: Photosystem i]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:26:08 2008''
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Current revision

THE THREE-DIMENSIONAL SOLUTION STRUCTURE OF PSAE FROM THE CYANOBACTERIUM SYNECHOCOCCUS SP. STRAIN PCC 7002: A PHOTOSYSTEM I PROTEIN THAT SHOWS STRUCTURAL HOMOLOGY WITH SH3 DOMAINS

PDB ID 1psf

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