2c7l
From Proteopedia
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2c7l]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mastigocladus_laminosus Mastigocladus laminosus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C7L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2C7L FirstGlance]. <br> | <table><tr><td colspan='2'>[[2c7l]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mastigocladus_laminosus Mastigocladus laminosus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2C7L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2C7L FirstGlance]. <br> | ||
| - | </td></tr><tr id=' | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.85Å</td></tr> |
| - | <tr id=' | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BLA:BILIVERDINE+IX+ALPHA'>BLA</scene>, <scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</scene></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=2c7l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c7l OCA], [https://pdbe.org/2c7l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2c7l RCSB], [https://www.ebi.ac.uk/pdbsum/2c7l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2c7l ProSAT]</span></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=2c7l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2c7l OCA], [https://pdbe.org/2c7l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2c7l RCSB], [https://www.ebi.ac.uk/pdbsum/2c7l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2c7l ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
| - | + | [https://www.uniprot.org/uniprot/PHEA_MASLA PHEA_MASLA] Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex. | |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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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/main_output.php?pdb_ID=2c7l ConSurf]. | </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=2c7l ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | Phycoerythrocyanin is the only cyanobacterial phycobiliprotein containing phycoviolobilin as a chromophore. The phycoviolobilin chromophore is photo-reactive; upon irradiation, the chromophore undergoes a Z/E-isomerization involving the rotation of pyrrole-ring D. We have determined the structure of trimeric phycoerythrocyanin at three different experimental settings: monochromatically at 110 K and 295 K as well as with the Laue method at 288 K. Based on their chemical structures, the restraints for the phycoviolobilin of the alpha-subunit and for the phycocyanobilin chromophores of the beta-subunit were newly generated, which allows a chemically meaningful refinement of both chromophores. All three phycoerythrocyanin structures are very similar; the subunits match within 0.5 A. The detailed comparison of the data obtained with the different measurements provided information about the protein properties around the phycoviolobilin chromophore. For the first time, crystals of a phycobilisome protein are used successfully with the Laue technique. This paves the way for time-resolved macromolecular crystallography, which is able to elucidate the exact mechanisms of the phycoviolobilin photoactivity including the protein involvement. | ||
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| - | Local protein flexibility as a prerequisite for reversible chromophore isomerization in alpha-phycoerythrocyanin.,Schmidt M, Krasselt A, Reuter W Biochim Biophys Acta. 2006 Jan;1764(1):55-62. Epub 2005 Nov 21. PMID:16377266<ref>PMID:16377266</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 2c7l" style="background-color:#fffaf0;"></div> | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Mastigocladus laminosus]] | [[Category: Mastigocladus laminosus]] | ||
| - | [[Category: Krasselt | + | [[Category: Krasselt A]] |
| - | [[Category: Reuter | + | [[Category: Reuter W]] |
| - | [[Category: Schmidt | + | [[Category: Schmidt M]] |
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Revision as of 06:38, 1 May 2024
Low temperature structure of phycoerythrocyanin from Mastigocladus laminosus
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