1c8r: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:1c8r.gif|left|200px]] | [[Image:1c8r.gif|left|200px]] | ||
'''BACTERIORHODOPSIN D96N BR STATE AT 2.0 A RESOLUTION''' | {{Structure | ||
|PDB= 1c8r |SIZE=350|CAPTION= <scene name='initialview01'>1c8r</scene>, resolution 1.80Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=LI1:1-[2,6,10.14-TETRAMETHYL-HEXADECAN-16-YL]-2-[2,10,14-TRIMETHYLHEXADECAN-16-YL]GLYCEROL'>LI1</scene>, <scene name='pdbligand=SQU:2,10,23-TRIMETHYL-TETRACOSANE'>SQU</scene> and <scene name='pdbligand=RET:RETINAL'>RET</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''BACTERIORHODOPSIN D96N BR STATE AT 2.0 A RESOLUTION''' | |||
==Overview== | ==Overview== | ||
| Line 7: | Line 16: | ||
==About this Structure== | ==About this Structure== | ||
1C8R is a [ | 1C8R is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Halobacterium_salinarum Halobacterium salinarum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1C8R OCA]. | ||
==Reference== | ==Reference== | ||
Structural changes in bacteriorhodopsin during ion transport at 2 angstrom resolution., Luecke H, Schobert B, Richter HT, Cartailler JP, Lanyi JK, Science. 1999 Oct 8;286(5438):255-61. PMID:[http:// | Structural changes in bacteriorhodopsin during ion transport at 2 angstrom resolution., Luecke H, Schobert B, Richter HT, Cartailler JP, Lanyi JK, Science. 1999 Oct 8;286(5438):255-61. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10514362 10514362] | ||
[[Category: Halobacterium salinarum]] | [[Category: Halobacterium salinarum]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
| Line 21: | Line 30: | ||
[[Category: ion pump]] | [[Category: ion pump]] | ||
[[Category: ion transport]] | [[Category: ion transport]] | ||
[[Category: | [[Category: lipid]] | ||
[[Category: membrane protein]] | [[Category: membrane protein]] | ||
[[Category: merohedral twinning]] | [[Category: merohedral twinning]] | ||
| Line 27: | Line 36: | ||
[[Category: retinal protein]] | [[Category: retinal protein]] | ||
''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 10:21:19 2008'' | ||
Revision as of 11:21, 20 March 2008
| |||||||
| , resolution 1.80Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , and | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
BACTERIORHODOPSIN D96N BR STATE AT 2.0 A RESOLUTION
OverviewOverview
Crystal structures of the Asp96 to Asn mutant of the light-driven proton pump bacteriorhodopsin and its M photointermediate produced by illumination at ambient temperature have been determined to 1.8 and 2.0 angstroms resolution, respectively. The trapped photoproduct corresponds to the late M state in the transport cycle-that is, after proton transfer to Asp85 and release of a proton to the extracellular membrane surface, but before reprotonation of the deprotonated retinal Schiff base. Its density map describes displacements of side chains near the retinal induced by its photoisomerization to 13-cis,15-anti and an extensive rearrangement of the three-dimensional network of hydrogen-bonded residues and bound water that accounts for the changed pKa values (where Ka is the acid constant) of the Schiff base and Asp85. The structural changes detected suggest the means for conserving energy at the active site and for ensuring the directionality of proton translocation.
About this StructureAbout this Structure
1C8R is a Single protein structure of sequence from Halobacterium salinarum. Full crystallographic information is available from OCA.
ReferenceReference
Structural changes in bacteriorhodopsin during ion transport at 2 angstrom resolution., Luecke H, Schobert B, Richter HT, Cartailler JP, Lanyi JK, Science. 1999 Oct 8;286(5438):255-61. PMID:10514362
Page seeded by OCA on Thu Mar 20 10:21:19 2008