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4gy3

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==T. vulcanus Phycocyanin crystallized in 2M Urea==
==T. vulcanus Phycocyanin crystallized in 2M Urea==
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<StructureSection load='4gy3' size='340' side='right' caption='[[4gy3]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
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<StructureSection load='4gy3' size='340' side='right'caption='[[4gy3]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4gy3]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermosynechococcus_vulcanus Thermosynechococcus vulcanus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GY3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4GY3 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4gy3]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermostichus_vulcanus Thermostichus vulcanus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GY3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4GY3 FirstGlance]. <br>
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</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=URE:UREA'>URE</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
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<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>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</scene>, <scene name='pdbligand=MEN:N-METHYL+ASPARAGINE'>MEN</scene>, <scene name='pdbligand=URE:UREA'>URE</scene></td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3o18|3o18]], [[4gxe|4gxe]], [[4h0m|4h0m]]</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=4gy3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gy3 OCA], [https://pdbe.org/4gy3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4gy3 RCSB], [https://www.ebi.ac.uk/pdbsum/4gy3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4gy3 ProSAT]</span></td></tr>
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<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=4gy3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gy3 OCA], [http://pdbe.org/4gy3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4gy3 RCSB], [http://www.ebi.ac.uk/pdbsum/4gy3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4gy3 ProSAT]</span></td></tr>
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</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/Q9AM02_THEVL Q9AM02_THEVL]
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X-ray crystal structures of the isolated phycobiliprotein components of the phycobilisome have provided high resolution details to the description of this light harvesting complex at different levels of complexity and detail. The linker-independent assembly of trimers into hexamers in crystal lattices of previously determined structures has been observed in almost all of the phycocyanin (PC) and allophycocyanin (APC) structures available in the Protein Data Bank. In this paper we describe the X-ray crystal structures of PC and APC from Synechococcus elongatus sp. PCC 7942, PC from Synechocystis sp. PCC 6803 and PC from Thermosynechococcus vulcanus crystallized in the presence of urea. All five structures are highly similar to other PC and APC structures on the levels of subunits, monomers and trimers. The Synechococcus APC forms a unique loose hexamer that may show the structural requirements for core assembly and rod attachment. While the Synechococcus PC assembles into the canonical hexamer, it does not further assemble into rods. Unlike most PC structures, the Synechocystis PC fails to form hexamers. Addition of low concentrations of urea to T. vulcanus PC inhibits this proteins propensity to form hexamers, resulting in a crystal lattice composed of trimers. The molecular source of these differences in assembly and their relevance to the phycobilisome structure is discussed.
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Allophycocyanin and phycocyanin crystal structures reveal facets of phycobilisome assembly.,Marx A, Adir N Biochim Biophys Acta. 2013 Mar;1827(3):311-8. doi: 10.1016/j.bbabio.2012.11.006. , Epub 2012 Nov 28. PMID:23201474<ref>PMID:23201474</ref>
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==See Also==
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*[[Phycocyanin|Phycocyanin]]
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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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<div class="pdbe-citations 4gy3" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Thermosynechococcus vulcanus]]
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[[Category: Large Structures]]
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[[Category: Adir, N]]
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[[Category: Thermostichus vulcanus]]
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[[Category: Marx, A]]
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[[Category: Adir N]]
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[[Category: Globin-type]]
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[[Category: Marx A]]
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[[Category: Light harvesting]]
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[[Category: Membrane attached]]
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[[Category: N-methyl asparagine]]
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[[Category: Photosynthesis]]
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[[Category: Photosynthetic antenna]]
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[[Category: Phycocyanoblilin]]
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[[Category: Urea denaturation]]
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Current revision

T. vulcanus Phycocyanin crystallized in 2M Urea

PDB ID 4gy3

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