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New page: left|200px<br /><applet load="1pse" size="450" color="white" frame="true" align="right" spinBox="true" caption="1pse" /> '''THE THREE-DIMENSIONAL SOLUTION STRUCTURE OF ...
 
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[[Image:1pse.gif|left|200px]]<br /><applet load="1pse" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1pse" />
'''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'''<br />


==Overview==
==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==
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.
<StructureSection load='1pse' size='340' side='right'caption='[[1pse]]' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1pse]] 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=1PSE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PSE FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1pse FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pse OCA], [https://pdbe.org/1pse PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1pse RCSB], [https://www.ebi.ac.uk/pdbsum/1pse PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1pse ProSAT]</span></td></tr>
</table>
== Function ==
[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.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ps/1pse_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=1pse ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1PSE is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Synechococcus_sp. Synechococcus sp.]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1PSE OCA].
*[[Photosystem I 3D structures|Photosystem I 3D structures]]
 
__TOC__
==Reference==
</StructureSection>
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://ispc.weizmann.ac.il//pmbin/getpm?pmid=8193119 8193119]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Synechococcus sp. PCC 7002]]
[[Category: Synechococcus sp.]]
[[Category: Bryant DA]]
[[Category: Bryant, D.A.]]
[[Category: Falzone CJ]]
[[Category: Falzone, C.J.]]
[[Category: Kao Y-H]]
[[Category: Kao, Y.H.]]
[[Category: Lecomte JTJ]]
[[Category: Lecomte, J.T.J.]]
[[Category: Zhao J]]
[[Category: Zhao, J.]]
[[Category: photosystem i]]
 
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Latest revision as of 05:58, 17 April 2024

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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