1byu: Difference between revisions
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[[Image:1byu.gif|left|200px]] | [[Image:1byu.gif|left|200px]] | ||
'''CANINE GDP-RAN''' | {{Structure | ||
|PDB= 1byu |SIZE=350|CAPTION= <scene name='initialview01'>1byu</scene>, resolution 2.15Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> and <scene name='pdbligand=GDP:GUANOSINE-5'-DIPHOSPHATE'>GDP</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''CANINE GDP-RAN''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
1BYU is a [ | 1BYU is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Canis_lupus_familiaris Canis lupus familiaris]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BYU OCA]. | ||
==Reference== | ==Reference== | ||
The structure of the Q69L mutant of GDP-Ran shows a major conformational change in the switch II loop that accounts for its failure to bind nuclear transport factor 2 (NTF2)., Stewart M, Kent HM, McCoy AJ, J Mol Biol. 1998 Dec 18;284(5):1517-27. PMID:[http:// | The structure of the Q69L mutant of GDP-Ran shows a major conformational change in the switch II loop that accounts for its failure to bind nuclear transport factor 2 (NTF2)., Stewart M, Kent HM, McCoy AJ, J Mol Biol. 1998 Dec 18;284(5):1517-27. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9878368 9878368] | ||
[[Category: Canis lupus familiaris]] | [[Category: Canis lupus familiaris]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: nuclear transport]] | [[Category: nuclear transport]] | ||
''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 10:17:37 2008'' | ||
Revision as of 08:17, 20 March 2008
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| 1byu, resolution 2.15Å | |||||||||||||
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| Ligands: | MG and GDP | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
CANINE GDP-RAN
Overview
We report the 2.3 A resolution X-ray crystal structure of the GDP-bound form of the RanQ69L mutant that is used extensively in studies of nucleocytoplasmic transport and cell-cycle progression. When the structure of GDP-RanQ69L from monoclinic crystals with P21 symmetry was compared with the structure of wild-type Ran obtained from monoclinic crystals, the Q69L mutant showed a large conformational change in residues 68-74, which are in the switch II region of the molecule which changes conformation in response to nucleotide state and which forms the major interaction interface with nuclear transport factor 2 (NTF2, sometimes called p10). This conformational change alters the positions of key residues such as Lys71, Phe72 and Arg76 that are crucial for the interaction of GDP-Ran with NTF2 and indeed, solution binding studies were unable to detect any interaction between NTF2 and GDP-RanQ69L under conditions where GDP-Ran bound effectively. This interaction between NTF2 and GDP-Ran is required for efficient nuclear protein import and may function between the docking and translocation steps of the pathway.
About this Structure
1BYU is a Single protein structure of sequence from Canis lupus familiaris. Full crystallographic information is available from OCA.
Reference
The structure of the Q69L mutant of GDP-Ran shows a major conformational change in the switch II loop that accounts for its failure to bind nuclear transport factor 2 (NTF2)., Stewart M, Kent HM, McCoy AJ, J Mol Biol. 1998 Dec 18;284(5):1517-27. PMID:9878368
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