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1lia

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[[Image:1lia.gif|left|200px]]<br /><applet load="1lia" size="350" color="white" frame="true" align="right" spinBox="true"
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[[Image:1lia.gif|left|200px]]
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caption="1lia, resolution 2.8&Aring;" />
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'''CRYSTAL STRUCTURE OF R-PHYCOERYTHRIN FROM POLYSIPHONIA AT 2.8 A RESOLUTION'''<br />
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{{Structure
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|PDB= 1lia |SIZE=350|CAPTION= <scene name='initialview01'>1lia</scene>, resolution 2.8&Aring;
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|SITE=
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|LIGAND= <scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</scene> and <scene name='pdbligand=PUB:PHYCOUROBILIN'>PUB</scene>
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|ACTIVITY=
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|GENE=
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}}
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'''CRYSTAL STRUCTURE OF R-PHYCOERYTHRIN FROM POLYSIPHONIA AT 2.8 A RESOLUTION'''
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==Overview==
==Overview==
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==About this Structure==
==About this Structure==
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1LIA is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Polysiphonia_urceolata Polysiphonia urceolata] with <scene name='pdbligand=CYC:'>CYC</scene> and <scene name='pdbligand=PUB:'>PUB</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LIA OCA].
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1LIA 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=1LIA OCA].
==Reference==
==Reference==
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Crystal structure of R-phycoerythrin from Polysiphonia urceolata at 2.8 A resolution., Chang WR, Jiang T, Wan ZL, Zhang JP, Yang ZX, Liang DC, J Mol Biol. 1996 Oct 11;262(5):721-31. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=8876649 8876649]
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Crystal structure of R-phycoerythrin from Polysiphonia urceolata at 2.8 A resolution., Chang WR, Jiang T, Wan ZL, Zhang JP, Yang ZX, Liang DC, J Mol Biol. 1996 Oct 11;262(5):721-31. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/8876649 8876649]
[[Category: Polysiphonia urceolata]]
[[Category: Polysiphonia urceolata]]
[[Category: Protein complex]]
[[Category: Protein complex]]
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[[Category: light harvesting protein]]
[[Category: light harvesting protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:45:14 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:31:10 2008''

Revision as of 10:31, 20 March 2008

Image:1lia.gif


PDB ID 1lia

Drag the structure with the mouse to rotate
, resolution 2.8Å
Ligands: and
Coordinates: save as pdb, mmCIF, xml



CRYSTAL STRUCTURE OF R-PHYCOERYTHRIN FROM POLYSIPHONIA AT 2.8 A RESOLUTION


Overview

The structure of R-phycoerythrin (R-PE) from Polysiphonia urceolata was determined at 2.8 A resolution. The crystals belong to space group R3 with unit cell dimensions of a = b = 189.8 A, c = 60.1 A. The subunit composition of R-PE is (alpha 2 beta 2)3 gamma. The three-dimensional structure of R-PE was solved by the multiple isomorphous replacement method. After several cycles of model building and refinement, the crystallographic R-factor of the final model is 18.0% with data from 10.0 to 2.8 A resolution. The four phycoerythrobilin chromophores alpha 84, alpha 140a, beta 84 and beta 155 in an (alpha beta) unit are each covalently bound to a cysteine residue through ring A. The phycourobilin chromophore is bound to cysteine beta 50 by ring A and bound to cysteine beta 61 by ring D. The ring A and ring D of phycourobilin deviate from the conjugate plane formed by ring B and ring C and the four rings form a boat-shaped structure. R-PE contains a 34 kDa gamma subunit that is assumed to lie in the central channel of the molecular disc (alpha 2 beta 2)3. The energy transfer and relationship between cysteine residues and chromophores are discussed.

About this Structure

1LIA is a Protein complex structure of sequences from Polysiphonia urceolata. Full crystallographic information is available from OCA.

Reference

Crystal structure of R-phycoerythrin from Polysiphonia urceolata at 2.8 A resolution., Chang WR, Jiang T, Wan ZL, Zhang JP, Yang ZX, Liang DC, J Mol Biol. 1996 Oct 11;262(5):721-31. PMID:8876649

Page seeded by OCA on Thu Mar 20 12:31:10 2008

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