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1eyx
From Proteopedia
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|PDB= 1eyx |SIZE=350|CAPTION= <scene name='initialview01'>1eyx</scene>, resolution 2.25Å | |PDB= 1eyx |SIZE=350|CAPTION= <scene name='initialview01'>1eyx</scene>, resolution 2.25Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=BLA:BILIVERDINE+IX+ALPHA'>BLA</scene>, <scene name='pdbligand=CYC:PHYCOCYANOBILIN'>CYC</scene>, <scene name='pdbligand=MEN:N-METHYL+ASPARAGINE'>MEN</scene>, <scene name='pdbligand=PUB:PHYCOUROBILIN'>PUB</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1eyx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1eyx OCA], [http://www.ebi.ac.uk/pdbsum/1eyx PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1eyx RCSB]</span> | ||
}} | }} | ||
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[[Category: Piras, C.]] | [[Category: Piras, C.]] | ||
[[Category: Vernede, X.]] | [[Category: Vernede, X.]] | ||
| - | [[Category: BLA]] | ||
| - | [[Category: CYC]] | ||
| - | [[Category: PUB]] | ||
| - | [[Category: SO4]] | ||
[[Category: macroseeding]] | [[Category: macroseeding]] | ||
[[Category: phycobiliprotein]] | [[Category: phycobiliprotein]] | ||
| Line 41: | Line 40: | ||
[[Category: twin]] | [[Category: twin]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:12:26 2008'' |
Revision as of 17:12, 30 March 2008
| |||||||
| , resolution 2.25Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , , , , | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF R-PHYCOERYTHRIN AT 2.2 ANGSTROMS
Overview
R-phycoerythrin, a light-harvesting component from the red algae Gracilaria chilensis, was crystallized by vapour diffusion using ammonium sulfate as precipitant agent. Red crystals grew after one week at 293 K and diffracted to 2.70 A resolution. Three serial macroseeding assays were necessary to grow a second larger crystal to dimensions of 0.68 x 0.16 x 0.16 mm. This crystal diffracted to 2.24 A resolution using synchrotron radiation at beamline BM14 of the European Synchrotron Radiation Facility (ESRF) at Grenoble, France and was used for structure determination. Data were collected at 100 K to a completeness of 98.6%. The crystal was trigonal, space group R3, with unit-cell parameters a = b = 187.3, c = 59.1 A, alpha = beta = 90, gamma = 120 degrees. Data treatment using the CCP4 suite of programs indicated that the crystal was twinned ((I(2))/(I)(2) = 1.41). Molecular replacement was performed with AMoRe using the R-phycoerythrin from Polysiphonia urceolata [Chang et al. (1996), J. Mol. Biol. 249, 424-440] as a search model. In order to overcome the twinning problem, SHELX97 was used for the crystallographic refinement. The twin fraction was 0.48, indicating a nearly perfect hemihedrally twinned crystal. The final R(work) and R(free) factors are 0.16 and 0.25, respectively. All the residues and chromophores of the alpha- and beta-chains are well defined in the electron-density maps. Some residues belonging to the gamma-linker are also recognizable.
About this Structure
1EYX is a Protein complex structure of sequences from Gracilaria chilensis. Full crystallographic information is available from OCA.
Reference
Crystallization and 2.2 A resolution structure of R-phycoerythrin from Gracilaria chilensis: a case of perfect hemihedral twinning., Contreras-Martel C, Martinez-Oyanedel J, Bunster M, Legrand P, Piras C, Vernede X, Fontecilla-Camps JC, Acta Crystallogr D Biol Crystallogr. 2001 Jan;57(Pt 1):52-60. PMID:11134927
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