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[[Image:1pse.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==
The line below this paragraph, containing "STRUCTURE_1pse", creates the "Structure Box" on the page.
<StructureSection load='1pse' size='340' side='right'caption='[[1pse]]' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<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>
or leave the SCENE parameter empty for the default display.
</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>
{{STRUCTURE_1pse| PDB=1pse |  SCENE= }}
</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>


'''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'''
==See Also==
 
*[[Photosystem I 3D structures|Photosystem I 3D structures]]
 
__TOC__
==Overview==
</StructureSection>
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.
[[Category: Large Structures]]
 
[[Category: Synechococcus sp. PCC 7002]]
==About this Structure==
[[Category: Bryant DA]]
1PSE 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=1PSE OCA].
[[Category: Falzone CJ]]
 
[[Category: Kao Y-H]]
==Reference==
[[Category: Lecomte JTJ]]
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]
[[Category: Zhao J]]
[[Category: Single protein]]
[[Category: Synechococcus sp.]]
[[Category: Bryant, D A.]]
[[Category: Falzone, C J.]]
[[Category: Kao, Y H.]]
[[Category: Lecomte, J T.J.]]
[[Category: Zhao, J.]]
[[Category: Photosystem i]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 05:26:05 2008''

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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