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1nr0

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{{STRUCTURE_1nr0| PDB=1nr0 | SCENE= }}
{{STRUCTURE_1nr0| PDB=1nr0 | SCENE= }}
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'''Two Seven-Bladed Beta-Propeller Domains Revealed By The Structure Of A C. elegans Homologue Of Yeast Actin Interacting Protein 1 (AIP1).'''
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===Two Seven-Bladed Beta-Propeller Domains Revealed By The Structure Of A C. elegans Homologue Of Yeast Actin Interacting Protein 1 (AIP1).===
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==Overview==
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Actin-interacting protein 1 (AIP1) is a WD40 repeat protein that enhances actin filament disassembly in the presence of actin-depolymerizing factor (ADF)/cofilin. AIP1 also caps the barbed end of ADF/cofilin-bound actin filament. However, the mechanism by which AIP1 interacts with ADF/cofilin and actin is not clearly understood. We determined the crystal structure of Caenorhabditis elegans AIP1 (UNC-78), which revealed 14 WD40 modules arranged in two seven-bladed beta-propeller domains. The structure allowed for the mapping of conserved surface residues, and mutagenesis studies identified five residues that affected the ADF/cofilin-dependent actin filament disassembly activity. Mutations of these residues, which reside in blades 3 and 4 in the N-terminal propeller domain, had significant effects on the disassembly activity but did not alter the barbed end capping activity. These data support a model in which this conserved surface of AIP1 plays a direct role in enhancing fragmentation/depolymerization of ADF/cofilin-bound actin filaments but not in barbed end capping.
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(as it appears on PubMed at http://www.pubmed.gov), where 15150269 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15150269}}
==About this Structure==
==About this Structure==
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[[Category: Structural genomic]]
[[Category: Structural genomic]]
[[Category: Wd40 repeat]]
[[Category: Wd40 repeat]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 02:52:45 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 03:54:10 2008''

Revision as of 00:54, 29 July 2008

Image:1nr0.png

Template:STRUCTURE 1nr0

Two Seven-Bladed Beta-Propeller Domains Revealed By The Structure Of A C. elegans Homologue Of Yeast Actin Interacting Protein 1 (AIP1).

Template:ABSTRACT PUBMED 15150269

About this Structure

1NR0 is a Single protein structure of sequence from Caenorhabditis elegans. Full crystallographic information is available from OCA.

Reference

Identification of functional residues on Caenorhabditis elegans actin-interacting protein 1 (UNC-78) for disassembly of actin depolymerizing factor/cofilin-bound actin filaments., Mohri K, Vorobiev S, Fedorov AA, Almo SC, Ono S, J Biol Chem. 2004 Jul 23;279(30):31697-707. Epub 2004 May 18. PMID:15150269

Page seeded by OCA on Tue Jul 29 03:54:10 2008

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