7pcy

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==THE CRYSTAL STRUCTURE OF PLASTOCYANIN FROM A GREEN ALGA, ENTEROMORPHA PROLIFERA==
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[[Image:7pcy.png|left|200px]]
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<StructureSection load='7pcy' size='340' side='right' caption='[[7pcy]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[7pcy]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Ulva_prolifera Ulva prolifera]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7PCY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=7PCY FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene><br>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=7pcy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7pcy OCA], [http://www.rcsb.org/pdb/explore.do?structureId=7pcy RCSB], [http://www.ebi.ac.uk/pdbsum/7pcy PDBsum]</span></td></tr>
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<table>
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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/pc/7pcy_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/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The crystal structure of the Cu-containing protein plastocyanin (Mr 10,500) from the green alga Enteromorpha prolifera has been solved by molecular replacement. The structure was refined by constrained-restrained and restrained reciprocal space least-squares techniques. The refined model includes 111 solvent sites. There is evidence for alternate conformers at eight residues. The residual is 0.12 for a data set comprising 74% of all observations accessible at 1.85 A resolution. The beta-sandwich structure of the algal plastocyanin is effectively the same as that of poplar leaf (Populus nigra var. italica) plastocyanin determined at 1.6 A resolution. The sequence homology between the two proteins is 56%. Differences between the contacts in the hydrophobic core create some significant (0.5 to 1.2 A) movements of the polypeptide backbone, resulting in small differences between the orientations and separations of corresponding beta-strands. These differences are most pronounced at the end of the molecule remote from the Cu site. The largest structural differences occur in the single non-beta strand, which includes the sole turn of helix in the molecule: two of the residues in a prominent kink of the poplar plastocyanin backbone are missing from the algal plastocyanin sequence, and there is a significant change in the position of the helical segment in relation to the beta-sandwich. Several other small but significant structural differences can be correlated with intermolecular contacts in the crystals. An intramolecular carboxyl-carboxylate hydrogen bond in the algal plastocyanin may be associated with an unusually high pKa. The dimensions of the Cu site in the two plastocyanins are, within the limits of precision, identical.
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Crystal structure of plastocyanin from a green alga, Enteromorpha prolifera.,Collyer CA, Guss JM, Sugimura Y, Yoshizaki F, Freeman HC J Mol Biol. 1990 Feb 5;211(3):617-32. PMID:2308169<ref>PMID:2308169</ref>
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The line below this paragraph, containing "STRUCTURE_7pcy", creates the "Structure Box" on the page.
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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or leave the SCENE parameter empty for the default display.
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-->
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{{STRUCTURE_7pcy| PDB=7pcy | SCENE= }}
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===THE CRYSTAL STRUCTURE OF PLASTOCYANIN FROM A GREEN ALGA, ENTEROMORPHA PROLIFERA===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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== References ==
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<!--
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<references/>
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The line below this paragraph, {{ABSTRACT_PUBMED_2308169}}, adds the Publication Abstract to the page
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__TOC__
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(as it appears on PubMed at http://www.pubmed.gov), where 2308169 is the PubMed ID number.
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</StructureSection>
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{{ABSTRACT_PUBMED_2308169}}
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==About this Structure==
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7PCY is a 1 chain structure of sequence from [http://en.wikipedia.org/wiki/Ulva_prolifera Ulva prolifera]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7PCY OCA].
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==Reference==
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<ref group="xtra">PMID:2308169</ref><references group="xtra"/>
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[[Category: Ulva prolifera]]
[[Category: Ulva prolifera]]
[[Category: Collyer, C A.]]
[[Category: Collyer, C A.]]
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[[Category: Guss, J M.]]
[[Category: Guss, J M.]]
[[Category: Electron transport protein]]
[[Category: Electron transport protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Feb 17 10:33:19 2009''
 

Revision as of 07:32, 5 June 2014

THE CRYSTAL STRUCTURE OF PLASTOCYANIN FROM A GREEN ALGA, ENTEROMORPHA PROLIFERA

7pcy, resolution 1.80Å

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