2o1u: Difference between revisions
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[[Image:2o1u.jpg|left|200px]] | [[Image:2o1u.jpg|left|200px]] | ||
'''Structure of full length GRP94 with AMP-PNP bound''' | {{Structure | ||
|PDB= 2o1u |SIZE=350|CAPTION= <scene name='initialview01'>2o1u</scene>, resolution 2.40Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> and <scene name='pdbligand=ANP:PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER'>ANP</scene> | |||
|ACTIVITY= | |||
|GENE= HSP90B1, TRA1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9615 Canis lupus familiaris]) | |||
}} | |||
'''Structure of full length GRP94 with AMP-PNP bound''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
2O1U is a [ | 2O1U 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=2O1U OCA]. | ||
==Reference== | ==Reference== | ||
Structures of GRP94-nucleotide complexes reveal mechanistic differences between the hsp90 chaperones., Dollins DE, Warren JJ, Immormino RM, Gewirth DT, Mol Cell. 2007 Oct 12;28(1):41-56. PMID:[http:// | Structures of GRP94-nucleotide complexes reveal mechanistic differences between the hsp90 chaperones., Dollins DE, Warren JJ, Immormino RM, Gewirth DT, Mol Cell. 2007 Oct 12;28(1):41-56. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17936703 17936703] | ||
[[Category: Canis lupus familiaris]] | [[Category: Canis lupus familiaris]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: htpg]] | [[Category: htpg]] | ||
''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 17:54:01 2008'' | ||
Revision as of 15:54, 20 March 2008
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| 2o1u, resolution 2.40Å | |||||||||||||
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| Ligands: | MG and ANP | ||||||||||||
| Gene: | HSP90B1, TRA1 (Canis lupus familiaris) | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Structure of full length GRP94 with AMP-PNP bound
Overview
GRP94, an essential endoplasmic reticulum chaperone, is required for the conformational maturation of proteins destined for cell-surface display or export. The extent to which GRP94 and its cytosolic paralog, Hsp90, share a common mechanism remains controversial. GRP94 has not been shown conclusively to hydrolyze ATP or bind cochaperones, and both activities, by contrast, result in conformational changes and N-terminal dimerization in Hsp90 that are critical for its function. Here, we report the 2.4 A crystal structure of mammalian GRP94 in complex with AMPPNP and ADP. The chaperone is conformationally insensitive to the identity of the bound nucleotide, adopting a "twisted V" conformation that precludes N-terminal domain dimerization. We also present conclusive evidence that GRP94 possesses ATPase activity. Our observations provide a structural explanation for GRP94's observed rate of ATP hydrolysis and suggest a model for the role of ATP binding and hydrolysis in the GRP94 chaperone cycle.
About this Structure
2O1U is a Single protein structure of sequence from Canis lupus familiaris. Full crystallographic information is available from OCA.
Reference
Structures of GRP94-nucleotide complexes reveal mechanistic differences between the hsp90 chaperones., Dollins DE, Warren JJ, Immormino RM, Gewirth DT, Mol Cell. 2007 Oct 12;28(1):41-56. PMID:17936703
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