1f99: Difference between revisions
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[[Image:1f99.gif|left|200px]] | [[Image:1f99.gif|left|200px]] | ||
'''CRYSTAL STRUCTURE OF R-PHYCOCYANIN FROM POLYSIPHONIA AT 2.4 A RESOLUTION''' | {{Structure | ||
|PDB= 1f99 |SIZE=350|CAPTION= <scene name='initialview01'>1f99</scene>, resolution 2.4Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=BLA:BILIVERDINE+IX+ALPHA'>BLA</scene>, <scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</scene> and <scene name='pdbligand=PEB:PHYCOERYTHROBILIN'>PEB</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''CRYSTAL STRUCTURE OF R-PHYCOCYANIN FROM POLYSIPHONIA AT 2.4 A RESOLUTION''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1F99 is a [ | 1F99 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Polysiphonia_urceolata Polysiphonia urceolata]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1F99 OCA]. | ||
==Reference== | ==Reference== | ||
Crystal structure of R-phycocyanin and possible energy transfer pathways in the phycobilisome., Jiang T, Zhang JP, Chang WR, Liang DC, Biophys J. 2001 Aug;81(2):1171-9. PMID:[http:// | Crystal structure of R-phycocyanin and possible energy transfer pathways in the phycobilisome., Jiang T, Zhang JP, Chang WR, Liang DC, Biophys J. 2001 Aug;81(2):1171-9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11463658 11463658] | ||
[[Category: Polysiphonia urceolata]] | [[Category: Polysiphonia urceolata]] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
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[[Category: r-phycocyanin]] | [[Category: r-phycocyanin]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:06:06 2008'' | ||
Revision as of 09:06, 20 March 2008
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| 1f99, resolution 2.4Å | |||||||||||||
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| Ligands: | BLA, CYC and PEB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
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.
About this Structure
1F99 is a Protein complex structure of sequences from Polysiphonia urceolata. Full crystallographic information is available from OCA.
Reference
Crystal structure of R-phycocyanin and possible energy transfer pathways in the phycobilisome., Jiang T, Zhang JP, Chang WR, Liang DC, Biophys J. 2001 Aug;81(2):1171-9. PMID:11463658
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