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[[Image:2bv8.gif|left|200px]]
<!--
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{{STRUCTURE_2bv8|  PDB=2bv8  |  SCENE=  }}
'''THE CRYSTAL STRUCTURE OF PHYCOCYANIN FROM GRACILARIA CHILENSIS.'''


==The crystal structure of Phycocyanin from Gracilaria chilensis.==
<StructureSection load='2bv8' size='340' side='right'caption='[[2bv8]], [[Resolution|resolution]] 2.01&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2bv8]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Agarophyton_chilense Agarophyton chilense]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BV8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2BV8 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.01&#8491;</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>, <scene name='pdbligand=PEB:PHYCOERYTHROBILIN'>PEB</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=2bv8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bv8 OCA], [https://pdbe.org/2bv8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2bv8 RCSB], [https://www.ebi.ac.uk/pdbsum/2bv8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2bv8 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q6B8L6_GRATL Q6B8L6_GRATL]
== 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/bv/2bv8_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=2bv8 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Phycocyanin is a phycobiliprotein involved in light harvesting and conduction of light to the reaction centers in cyanobacteria and red algae. The structure of C-phycocyanin from Gracilaria chilensis was solved by X-ray crystallography at 2.0 A resolution in space group P2(1). An interaction model between two PC heterohexamers was built, followed by molecular dynamic refinement. The best model showed an inter-hexamer rotation of 23 degrees . The coordinates of a PC heterohexamer (alphabeta)(6) and of the PC-PC complex were used to perform energy transfer calculations between chromophores pairs using the fluorescence resonance energy transfer approach (FRET). Two main intra PC ((I)beta(3)(82)--&gt;(I)alpha(1)(84)--&gt;(I)alpha(5)(84)--&gt;(I)beta(6)(82) and (I)beta(3)(153)--&gt;(I)beta(5)(153)) and two main inter PC ((I)beta(6)(82)--&gt;(II)beta(3)(82) and (I)beta(5)(153)--&gt;(II)beta(3)(153)) pathways were proposed based on the values of the energy transfer constants calculated for all the chromophore pairs in the hexamer and in the complex.


==Overview==
The structure at 2 A resolution of Phycocyanin from Gracilaria chilensis and the energy transfer network in a PC-PC complex.,Contreras-Martel C, Matamala A, Bruna C, Poo-Caamano G, Almonacid D, Figueroa M, Martinez-Oyanedel J, Bunster M Biophys Chem. 2007 Feb;125(2-3):388-96. Epub 2006 Nov 10. PMID:17118524<ref>PMID:17118524</ref>
Phycocyanin is a phycobiliprotein involved in light harvesting and conduction of light to the reaction centers in cyanobacteria and red algae. The structure of C-phycocyanin from Gracilaria chilensis was solved by X-ray crystallography at 2.0 A resolution in space group P2(1). An interaction model between two PC heterohexamers was built, followed by molecular dynamic refinement. The best model showed an inter-hexamer rotation of 23 degrees . The coordinates of a PC heterohexamer (alphabeta)(6) and of the PC-PC complex were used to perform energy transfer calculations between chromophores pairs using the fluorescence resonance energy transfer approach (FRET). Two main intra PC ((I)beta(3)(82)--&gt;(I)alpha(1)(84)--&gt;(I)alpha(5)(84)--&gt;(I)beta(6)(82) and (I)beta(3)(153)--&gt;(I)beta(5)(153)) and two main inter PC ((I)beta(6)(82)--&gt;(II)beta(3)(82) and (I)beta(5)(153)--&gt;(II)beta(3)(153)) pathways were proposed based on the values of the energy transfer constants calculated for all the chromophore pairs in the hexamer and in the complex.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
2BV8 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Gracilaria_chilensis Gracilaria chilensis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BV8 OCA].
</div>
<div class="pdbe-citations 2bv8" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
The structure at 2 A resolution of Phycocyanin from Gracilaria chilensis and the energy transfer network in a PC-PC complex., Contreras-Martel C, Matamala A, Bruna C, Poo-Caamano G, Almonacid D, Figueroa M, Martinez-Oyanedel J, Bunster M, Biophys Chem. 2007 Feb;125(2-3):388-96. Epub 2006 Nov 10. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17118524 17118524]
*[[Phycocyanin|Phycocyanin]]
[[Category: Gracilaria chilensis]]
== References ==
[[Category: Protein complex]]
<references/>
[[Category: Bruna, C.]]
__TOC__
[[Category: Bunster, M.]]
</StructureSection>
[[Category: Contreras-Martel, C.]]
[[Category: Agarophyton chilense]]
[[Category: Martinez-Oyanedel, J.]]
[[Category: Large Structures]]
[[Category: Poo-Caama, G.]]
[[Category: Bruna C]]
[[Category: Chloroplast]]
[[Category: Bunster M]]
[[Category: Light harvesting]]
[[Category: Contreras-Martel C]]
[[Category: Photosynthesis]]
[[Category: Martinez-Oyanedel J]]
[[Category: Phycobiliprotein]]
[[Category: Poo-Caama G]]
[[Category: Phycobilisome]]
[[Category: Phycocyanin]]
[[Category: Phycocyanobilin]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 20:50:44 2008''

Latest revision as of 13:56, 13 December 2023

The crystal structure of Phycocyanin from Gracilaria chilensis.

2bv8, resolution 2.01Å

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