1qqv: Difference between revisions

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[[Image:1qqv.gif|left|200px]]
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{{STRUCTURE_1qqv|  PDB=1qqv  |  SCENE=  }}  
{{STRUCTURE_1qqv|  PDB=1qqv  |  SCENE=  }}  


'''SOLUTION STRUCTURE OF THE HEADPIECE DOMAIN OF CHICKEN VILLIN'''
===SOLUTION STRUCTURE OF THE HEADPIECE DOMAIN OF CHICKEN VILLIN===




==Overview==
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A growing family of F-actin-bundling proteins harbors a modular F-actin-binding headpiece domain at the C terminus. Headpiece provides one of the two F-actin-binding sites essential for filament bundling. Here, we report the first structure of a functional headpiece domain. The NMR structure of chicken villin headpiece (HP67) reveals two subdomains that share a tightly packed hydrophobic core. The N-terminal subdomain contains bends, turns, and a four-residue alpha-helix as well as a buried histidine residue that imparts a pH-dependent folding. The C-terminal subdomain is composed of three alpha-helices and its folding is pH-independent. Two residues previously implicated in F-actin-binding form a buried salt-bridge between the N and C-terminal subdomains. The rest of the identified actin-binding residues are solvent-exposed and map onto a unique F-actin-binding surface.
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==About this Structure==
==About this Structure==
1QQV is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QQV OCA].  
1QQV is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1QQV OCA].  


==Reference==
==Reference==
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[[Category: F-actin binding domain]]
[[Category: F-actin binding domain]]
[[Category: Salt-bridge]]
[[Category: Salt-bridge]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 06:36:11 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 23:50:21 2008''

Revision as of 23:50, 27 July 2008

File:1qqv.png

Template:STRUCTURE 1qqv

SOLUTION STRUCTURE OF THE HEADPIECE DOMAIN OF CHICKEN VILLINSOLUTION STRUCTURE OF THE HEADPIECE DOMAIN OF CHICKEN VILLIN

Template:ABSTRACT PUBMED 10600386

About this StructureAbout this Structure

1QQV is a Single protein structure of sequence from Gallus gallus. Full experimental information is available from OCA.

ReferenceReference

NMR structure of an F-actin-binding "headpiece" motif from villin., Vardar D, Buckley DA, Frank BS, McKnight CJ, J Mol Biol. 1999 Dec 17;294(5):1299-310. PMID:10600386

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