2h53

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[[Image:2h53.gif|left|200px]]
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{{Seed}}
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[[Image:2h53.png|left|200px]]
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{{STRUCTURE_2h53| PDB=2h53 | SCENE= }}
{{STRUCTURE_2h53| PDB=2h53 | SCENE= }}
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'''Multiple distinct assemblies reveal conformational flexibility in the small heat shock protein Hsp26'''
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===Multiple distinct assemblies reveal conformational flexibility in the small heat shock protein Hsp26===
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==Overview==
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Small heat shock proteins are a superfamily of molecular chaperones that suppress protein aggregation and provide protection from cell stress. A key issue for understanding their action is to define the interactions of subunit domains in these oligomeric assemblies. Cryo-electron microscopy of yeast Hsp26 reveals two distinct forms, each comprising 24 subunits arranged in a porous shell with tetrahedral symmetry. The subunits form elongated, asymmetric dimers that assemble via trimeric contacts. Modifications of both termini cause rearrangements that yield a further four assemblies. Each subunit contains an N-terminal region, a globular middle domain, the alpha-crystallin domain, and a C-terminal tail. Twelve of the C termini form 3-fold assembly contacts which are inserted into the interior of the shell, while the other 12 C termini form contacts on the surface. Hinge points between the domains allow a variety of assembly contacts, providing the flexibility required for formation of supercomplexes with non-native proteins.
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(as it appears on PubMed at http://www.pubmed.gov), where 16843901 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16843901}}
==About this Structure==
==About this Structure==
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[[Category: Heat shock protein]]
[[Category: Heat shock protein]]
[[Category: Single particle reconstruction]]
[[Category: Single particle reconstruction]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 05:52:36 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 11:14:04 2008''

Revision as of 08:14, 29 July 2008

Image:2h53.png

Template:STRUCTURE 2h53

Multiple distinct assemblies reveal conformational flexibility in the small heat shock protein Hsp26

Template:ABSTRACT PUBMED 16843901

About this Structure

2H53 is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

Multiple distinct assemblies reveal conformational flexibility in the small heat shock protein Hsp26., White HE, Orlova EV, Chen S, Wang L, Ignatiou A, Gowen B, Stromer T, Franzmann TM, Haslbeck M, Buchner J, Saibil HR, Structure. 2006 Jul;14(7):1197-204. PMID:16843901

Page seeded by OCA on Tue Jul 29 11:14:04 2008

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