2qwp
From Proteopedia
(New page: 200px<br /><applet load="2qwp" size="350" color="white" frame="true" align="right" spinBox="true" caption="2qwp, resolution 1.750Å" /> '''Crystal structure o...) |
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==Overview== | ==Overview== | ||
| - | The many protein processing reactions of the ATP-hydrolyzing Hsp70s are | + | The many protein processing reactions of the ATP-hydrolyzing Hsp70s are regulated by J cochaperones, which contain J domains that stimulate Hsp70 ATPase activity and accessory domains that present protein substrates to Hsp70s. We report the structure of a J domain complexed with a J responsive portion of a mammalian Hsp70. The J domain activates ATPase activity by directing the linker that connects the Hsp70 nucleotide binding domain (NBD) and substrate binding domain (SBD) toward a hydrophobic patch on the NBD surface. Binding of the J domain to Hsp70 displaces the SBD from the NBD, which may allow the SBD flexibility to capture diverse substrates. Unlike prokaryotic Hsp70, the SBD and NBD of the mammalian chaperone interact in the ADP state. Thus, although both nucleotides and J cochaperones modulate Hsp70 NBD:linker and NBD:SBD interactions, the intrinsic persistence of those interactions differs in different Hsp70s and this may optimize their activities for different cellular roles. |
==About this Structure== | ==About this Structure== | ||
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[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Protein-tyrosine-phosphatase]] | [[Category: Protein-tyrosine-phosphatase]] | ||
| - | [[Category: Hinck, A | + | [[Category: Hinck, A P.]] |
[[Category: Jiang, J.]] | [[Category: Jiang, J.]] | ||
| - | [[Category: Lafer, E | + | [[Category: Lafer, E M.]] |
| - | [[Category: Maes, E | + | [[Category: Maes, E G.]] |
[[Category: Sousa, R.]] | [[Category: Sousa, R.]] | ||
| - | [[Category: Taylor, A | + | [[Category: Taylor, A B.]] |
[[Category: Wang, L.]] | [[Category: Wang, L.]] | ||
[[Category: ACY]] | [[Category: ACY]] | ||
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[[Category: stress response]] | [[Category: stress response]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 18:42:56 2008'' |
Revision as of 16:42, 21 February 2008
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Crystal structure of disulfide-bond-crosslinked complex of bovine hsc70 (1-394aa)R171C and bovine Auxilin (810-910aa)D876C in the ADP*Pi form #2
Overview
The many protein processing reactions of the ATP-hydrolyzing Hsp70s are regulated by J cochaperones, which contain J domains that stimulate Hsp70 ATPase activity and accessory domains that present protein substrates to Hsp70s. We report the structure of a J domain complexed with a J responsive portion of a mammalian Hsp70. The J domain activates ATPase activity by directing the linker that connects the Hsp70 nucleotide binding domain (NBD) and substrate binding domain (SBD) toward a hydrophobic patch on the NBD surface. Binding of the J domain to Hsp70 displaces the SBD from the NBD, which may allow the SBD flexibility to capture diverse substrates. Unlike prokaryotic Hsp70, the SBD and NBD of the mammalian chaperone interact in the ADP state. Thus, although both nucleotides and J cochaperones modulate Hsp70 NBD:linker and NBD:SBD interactions, the intrinsic persistence of those interactions differs in different Hsp70s and this may optimize their activities for different cellular roles.
About this Structure
2QWP is a Protein complex structure of sequences from Bos taurus with , , , , and as ligands. Active as Protein-tyrosine-phosphatase, with EC number 3.1.3.48 Full crystallographic information is available from OCA.
Reference
Structural basis of J cochaperone binding and regulation of Hsp70., Jiang J, Maes EG, Taylor AB, Wang L, Hinck AP, Lafer EM, Sousa R, Mol Cell. 2007 Nov 9;28(3):422-33. PMID:17996706
Page seeded by OCA on Thu Feb 21 18:42:56 2008
Categories: Bos taurus | Protein complex | Protein-tyrosine-phosphatase | Hinck, A P. | Jiang, J. | Lafer, E M. | Maes, E G. | Sousa, R. | Taylor, A B. | Wang, L. | ACY | ADP | GOL | MG | NA | PO4 | Atp-binding | Chaperone-cochaperone complex | Cytoplasm | Hydrolase | Nucleotide-binding | Nucleus | Phosphorylation | Protein phosphatase | Sh3-binding | Stress response
