1f99: Difference between revisions

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~~'''~~CRYSTAL STRUCTURE OF R-PHYCOCYANIN FROM POLYSIPHONIA AT 2.4 A RESOLUTION~~'''~~

===CRYSTAL STRUCTURE OF R-PHYCOCYANIN FROM POLYSIPHONIA AT 2.4 A RESOLUTION===

~~==Overview==~~

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The ~~crystal structure of R-phycocyanin from Polysiphonia urceolata~~ (~~R-PC-PU)~~ at 2.~~4 A is reported~~. ~~The R-PC-PU crystal belongs to space group P4(3)2(1~~)~~2 with cell parameters a = 135.1 A, c = 210.0 A~~, ~~and alpha = beta = gamma = 90 degrees. The structure was determined by molecular replacement. The crystallographic R-factor of the refined model~~ is ~~0.189 (R(free) = 0.239). Comparison of~~ the ~~microenvironment of chromophore beta 155 in R-PC-PU and in C-PC from Fremyolla diphosiphon (C-PC-FD) reveals that their spectral differences may be caused by their different alpha 28 residues~~. ~~In the R~~-PC-PU crystal structure, two (alpha beta)(3) trimers assemble face to face to form a hexamer, and two such hexamers assemble in two novel side-to-side arrangements. Possible models for the energy transfer from phycoerythrin to phycocyanin and from phycocyanin to allophycocyanin are proposed based on several phycobiliprotein crystal structures.

The line below this paragraph, {{ABSTRACT_PUBMED_11463658}}, adds the Publication Abstract to the page

(as it appears on PubMed at http://www.pubmed.gov), where 11463658 is the PubMed ID number.

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==About this Structure==

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[[Category: Photosynthesis]]

[[Category: R-phycocyanin]]

''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on ~~Fri May~~ ~~2 16~~:03:32 2008''

''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 02:54:07 2008''

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-[[Image:1f99.gif|left|200px]]
+{{Seed}}
+[[Image:1f99.png|left|200px]]
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 {{STRUCTURE_1f99|  PDB=1f99  |  SCENE=  }}
-'''CRYSTAL STRUCTURE OF R-PHYCOCYANIN FROM POLYSIPHONIA AT 2.4 A RESOLUTION'''
+===CRYSTAL STRUCTURE OF R-PHYCOCYANIN FROM POLYSIPHONIA AT 2.4 A RESOLUTION===
-==Overview==
+<!--
-The crystal structure of R-phycocyanin from Polysiphonia urceolata (R-PC-PU) at 2.4 A is reported. The R-PC-PU crystal belongs to space group P4(3)2(1)2 with cell parameters a = 135.1 A, c = 210.0 A, and alpha = beta = gamma = 90 degrees. The structure was determined by molecular replacement. The crystallographic R-factor of the refined model is 0.189 (R(free) = 0.239). Comparison of the microenvironment of chromophore beta 155 in R-PC-PU and in C-PC from Fremyolla diphosiphon (C-PC-FD) reveals that their spectral differences may be caused by their different alpha 28 residues. In the R-PC-PU crystal structure, two (alpha beta)(3) trimers assemble face to face to form a hexamer, and two such hexamers assemble in two novel side-to-side arrangements. Possible models for the energy transfer from phycoerythrin to phycocyanin and from phycocyanin to allophycocyanin are proposed based on several phycobiliprotein crystal structures.
+The line below this paragraph, {{ABSTRACT_PUBMED_11463658}}, adds the Publication Abstract to the page
+(as it appears on PubMed at http://www.pubmed.gov), where 11463658 is the PubMed ID number.
+-->
+{{ABSTRACT_PUBMED_11463658}}
 ==About this Structure==
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 [[Category: Photosynthesis]]
 [[Category: R-phycocyanin]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 16:03:32 2008''
+''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul  1 02:54:07 2008''