1ktp: Difference between revisions
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1ktp]] 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=1KTP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KTP FirstGlance]. <br> | <table><tr><td colspan='2'>[[1ktp]] 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=1KTP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KTP FirstGlance]. <br> | ||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BLA:BILIVERDINE+IX+ALPHA'>BLA</scene>, <scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</scene>< | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BLA:BILIVERDINE+IX+ALPHA'>BLA</scene>, <scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</scene></td></tr> | ||
<tr><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='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><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1i7y|1i7y]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1i7y|1i7y]]</td></tr> | ||
<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=1ktp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ktp OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1ktp RCSB], [http://www.ebi.ac.uk/pdbsum/1ktp PDBsum]</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=1ktp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ktp OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1ktp RCSB], [http://www.ebi.ac.uk/pdbsum/1ktp PDBsum]</span></td></tr> | ||
<table> | </table> | ||
== Function == | |||
[[http://www.uniprot.org/uniprot/PHCA_SYNEL PHCA_SYNEL]] Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex. [[http://www.uniprot.org/uniprot/PHCB_SYNEL PHCB_SYNEL]] 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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</StructureSection> | </StructureSection> | ||
[[Category: Thermosynechococcus vulcanus]] | [[Category: Thermosynechococcus vulcanus]] | ||
[[Category: Adir, N | [[Category: Adir, N]] | ||
[[Category: Dobrovetsky, E | [[Category: Dobrovetsky, E]] | ||
[[Category: Lerner, N | [[Category: Lerner, N]] | ||
[[Category: Cyanobacteria]] | [[Category: Cyanobacteria]] | ||
[[Category: Light harvesting protein]] | [[Category: Light harvesting protein]] | ||
Revision as of 17:23, 24 December 2014
Crystal structure of c-phycocyanin of synechococcus vulcanus at 1.6 angstromsCrystal structure of c-phycocyanin of synechococcus vulcanus at 1.6 angstroms
Structural highlights
Function[PHCA_SYNEL] Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex. [PHCB_SYNEL] Light-harvesting photosynthetic bile pigment-protein from the phycobiliprotein complex. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe crystal structure of the light-harvesting phycobiliprotein, c-phycocyanin from the thermophilic cyanobacterium Synechococcus vulcanus has been refined to 1.6 A resolution based on the previously determined lower resolution structure (PDB entry 1I7Y). The improved data was collected using synchrotron radiation at 100 K. The significantly improved crystallographic data has lead to improved calculated electron density maps, allowing the unambiguous positioning of all protein and co-factor atoms and the positioning of 377 solvent molecules. The positions of solvent molecules at specific sites important for stabilization of different levels of self-assembly of the phycobilisome structure were identified and the bonding network is described. The presence of solvent molecules in the vicinity of the co-factors and in intermolecular spaces is identified and their possible roles are suggested. All three of the phycocyanobilin co-factors bind water molecules at specific sites between the propionic acid side chains. Molecular dynamic (MD) simulations support that these special waters have a role in stabilization of this conformation. On the basis of the crystal packing reported here and in comparison to other phycobiliprotein crystal forms, we have analyzed the roles of specific sites on the formation of the phycobilisome complex. Refined structure of c-phycocyanin from the cyanobacterium Synechococcus vulcanus at 1.6 A: insights into the role of solvent molecules in thermal stability and co-factor structure.,Adir N, Vainer R, Lerner N Biochim Biophys Acta. 2002 Dec 2;1556(2-3):168-74. PMID:12460674[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References |
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