View source for 1phn

==STRUCTURE OF PHYCOCYANIN FROM CYANIDIUM CALDARIUM AT 1.65A RESOLUTION==
<StructureSection load='1phn' size='340' side='right' caption='[[1phn]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1phn]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Cyanidium_caldarium Cyanidium caldarium]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PHN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1PHN FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</scene>, <scene name='pdbligand=PEB:PHYCOERYTHROBILIN'>PEB</scene></td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MEN:N-METHYL+ASPARAGINE'>MEN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1phn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1phn OCA], [http://pdbe.org/1phn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1phn RCSB], [http://www.ebi.ac.uk/pdbsum/1phn PDBsum]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/PHCA_GALSU PHCA_GALSU]] Light-harvesting photosynthetic tetrapyrrole chromophore-protein from the phycobiliprotein complex. [[http://www.uniprot.org/uniprot/PHCB_GALSU PHCB_GALSU]] Light-harvesting photosynthetic tetrapyrrole chromophore-protein from the phycobiliprotein complex. 
== 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/ph/1phn_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=1phn ConSurf].
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== Publication Abstract from PubMed ==
The crystal structure of the light-harvesting protein phycocyanin from the cyanobacterium Cyanidium caldarium with novel crystal packing has been solved at 1.65-A resolution. The structure has been refined to an R value of 18.3% with excellent backbone and side-chain stereochemical parameters. In crystals of phycocyanin used in this study, the hexamers are offset rather than aligned as in other phycocyanins that have been crystallized to date. Analysis of this crystal's unique packing leads to a proposal for phycobilisome assembly in vivo and for a more prominent role for chromophore beta-155. This new role assigned to chromophore beta-155 in phycocyanin sheds light on the numerical relationships among and function of external chromophores found in phycoerythrins and phycoerythrocyanins.

Crystal structure of C-phycocyanin from Cyanidium caldarium provides a new perspective on phycobilisome assembly.,Stec B, Troxler RF, Teeter MM Biophys J. 1999 Jun;76(6):2912-21. PMID:10354419<ref>PMID:10354419</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 1phn" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Cyanidium caldarium]]
[[Category: Stec, B]]
[[Category: Teeter, M M]]
[[Category: Troxler, R F]]
[[Category: Electron transport]]
[[Category: Phycobilisome]]
[[Category: Phycocyanin]]