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1jo8

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{{STRUCTURE_1jo8| PDB=1jo8 | SCENE= }}
{{STRUCTURE_1jo8| PDB=1jo8 | SCENE= }}
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'''Structural analysis of the yeast actin binding protein Abp1 SH3 domain'''
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===Structural analysis of the yeast actin binding protein Abp1 SH3 domain===
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==Overview==
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Abp1p is an actin-binding protein that plays a central role in the organization of Saccharomyces cerevisiae actin cytoskeleton. By a combination of two-hybrid and phage-display approaches, we have identified six new ligands of the Abp1-SH3 domain. None of these SH3-mediated novel interactions was detected in recent all genome high throughput protein interaction projects. Here we show that the SH3-mediated association of Abp1p with the Ser/Thr kinases Prk1p and Ark1p is essential for their localization to actin cortical patches. The Abp1-SH3 domain has a rather unusual binding specificity, because its target peptides contain the tetrapentapeptide +XXXPXXPX+PXXL with positive charges flanking the polyproline core on both sides. Here we present the structure of the Abp1-SH3 domain solved at 1.3-A resolution. The peptide-binding pockets in the SH3 domain are flanked by two acidic residues that are uncommon at those positions in the SH3 domain family. We have shown by site-directed mutagenesis that one of these negatively charged side chains may be the key determinant for the preference for non-classical ligands.
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(as it appears on PubMed at http://www.pubmed.gov), where 11668184 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11668184}}
==About this Structure==
==About this Structure==
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[[Category: Zucconi, A.]]
[[Category: Zucconi, A.]]
[[Category: Sh3 domain actin-binding-protein]]
[[Category: Sh3 domain actin-binding-protein]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 21:29:48 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 20:32:52 2008''

Revision as of 17:32, 1 July 2008

Image:1jo8.png

Template:STRUCTURE 1jo8

Structural analysis of the yeast actin binding protein Abp1 SH3 domain

Template:ABSTRACT PUBMED 11668184

About this Structure

1JO8 is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.

Reference

Unusual binding properties of the SH3 domain of the yeast actin-binding protein Abp1: structural and functional analysis., Fazi B, Cope MJ, Douangamath A, Ferracuti S, Schirwitz K, Zucconi A, Drubin DG, Wilmanns M, Cesareni G, Castagnoli L, J Biol Chem. 2002 Feb 15;277(7):5290-8. Epub 2001 Oct 19. PMID:11668184

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