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1o9u

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[[Image:1o9u.gif|left|200px]]
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{{Seed}}
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[[Image:1o9u.png|left|200px]]
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{{STRUCTURE_1o9u| PDB=1o9u | SCENE= }}
{{STRUCTURE_1o9u| PDB=1o9u | SCENE= }}
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'''GLYCOGEN SYNTHASE KINASE 3 BETA COMPLEXED WITH AXIN PEPTIDE'''
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===GLYCOGEN SYNTHASE KINASE 3 BETA COMPLEXED WITH AXIN PEPTIDE===
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==Overview==
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Glycogen synthase kinase 3beta (GSK3beta) is a serine/threonine kinase involved in insulin, growth factor and Wnt signalling. In Wnt signalling, GSK3beta is recruited to a multiprotein complex via interaction with axin, where it hyperphosphorylates beta-catenin, marking it for ubiquitylation and destruction. We have now determined the crystal structure of GSK3beta in complex with a minimal GSK3beta-binding segment of axin, at 2.4 A resolution. The structure confirms the co-localization of the binding sites for axin and FRAT in the C-terminal domain of GSK3beta, but reveals significant differences in the interactions made by axin and FRAT, mediated by conformational plasticity of the 285-299 loop in GSK3beta. Detailed comparison of the axin and FRAT GSK3beta complexes allows the generation of highly specific mutations, which abrogate binding of one or the other. Quantitative analysis suggests that the interaction of GSK3beta with the axin scaffold enhances phosphorylation of beta-catenin by &gt;20 000-fold.
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The line below this paragraph, {{ABSTRACT_PUBMED_12554650}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 12554650 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12554650}}
==About this Structure==
==About this Structure==
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[[Category: Serine/threonine -protein kinase]]
[[Category: Serine/threonine -protein kinase]]
[[Category: Transferase]]
[[Category: Transferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 03:34:10 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 14:36:47 2008''

Revision as of 11:36, 28 July 2008

Image:1o9u.png

Template:STRUCTURE 1o9u

GLYCOGEN SYNTHASE KINASE 3 BETA COMPLEXED WITH AXIN PEPTIDE

Template:ABSTRACT PUBMED 12554650

About this Structure

1O9U is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structural basis for recruitment of glycogen synthase kinase 3beta to the axin-APC scaffold complex., Dajani R, Fraser E, Roe SM, Yeo M, Good VM, Thompson V, Dale TC, Pearl LH, EMBO J. 2003 Feb 3;22(3):494-501. PMID:12554650

Page seeded by OCA on Mon Jul 28 14:36:47 2008

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