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| | <StructureSection load='4h0m' size='340' side='right'caption='[[4h0m]], [[Resolution|resolution]] 2.20Å' scene=''> | | <StructureSection load='4h0m' size='340' side='right'caption='[[4h0m]], [[Resolution|resolution]] 2.20Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4h0m]] is a 24 chain structure with sequence from [http://en.wikipedia.org/wiki/Synechococcus_elongatus Synechococcus elongatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4H0M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4H0M FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4h0m]] is a 24 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechococcus_elongatus_PCC_7942_=_FACHB-805 Synechococcus elongatus PCC 7942 = FACHB-805]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4H0M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4H0M 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></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2Å</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='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></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4gxe|4gxe]], [[4gy3|4gy3]]</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=4h0m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4h0m OCA], [https://pdbe.org/4h0m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4h0m RCSB], [https://www.ebi.ac.uk/pdbsum/4h0m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4h0m ProSAT]</span></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=4h0m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4h0m OCA], [http://pdbe.org/4h0m PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4h0m RCSB], [http://www.ebi.ac.uk/pdbsum/4h0m PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4h0m ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | + | == Function == |
| | + | [https://www.uniprot.org/uniprot/PHCA_SYNE7 PHCA_SYNE7] |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Synechococcus elongatus]] | + | [[Category: Synechococcus elongatus PCC 7942 = FACHB-805]] |
| - | [[Category: Adir, N]] | + | [[Category: Adir N]] |
| - | [[Category: Marx, A]] | + | [[Category: Marx A]] |
| - | [[Category: Component of the phycobilisome]]
| + | |
| - | [[Category: Photosynthesis]]
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| - | [[Category: Photosynthetic antenna complex]]
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| Structural highlights
Function
PHCA_SYNE7
Publication Abstract from PubMed
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.
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[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Marx A, Adir N. Allophycocyanin and phycocyanin crystal structures reveal facets of phycobilisome assembly. Biochim Biophys Acta. 2013 Mar;1827(3):311-8. doi: 10.1016/j.bbabio.2012.11.006. , Epub 2012 Nov 28. PMID:23201474 doi:http://dx.doi.org/10.1016/j.bbabio.2012.11.006
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