1v06

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{{STRUCTURE_1v06| PDB=1v06 | SCENE= }}
{{STRUCTURE_1v06| PDB=1v06 | SCENE= }}
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'''AXH DOMAIN OF THE TRANSCRIPTION FACTOR HBP1 FROM M.MUSCULUS'''
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===AXH DOMAIN OF THE TRANSCRIPTION FACTOR HBP1 FROM M.MUSCULUS===
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==Overview==
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AXH is a protein module identified in two unrelated families that comprise the transcriptional repressor HBP1 and ataxin-1 (ATX1), the protein responsible for spinocerebellar ataxia type-1 (SCA1). SCA1 is a neurodegenerative disorder associated with protein misfolding and formation of toxic intranuclear aggregates. We have solved the structure in solution of monomeric AXH from HBP1. The domain adopts a nonclassical permutation of an OB fold and binds nucleic acids, a function previously unidentified for this region of HBP1. Comparison of HBP1 AXH with the crystal structure of dimeric ATX1 AXH indicates that, despite the significant sequence homology, the two proteins have different topologies, suggesting that AXH has chameleon properties. We further demonstrate that HBP1 AXH remains monomeric, whereas the ATX1 dimer spontaneously aggregates and forms fibers. Our results describe an entirely novel, to our knowledge, example of a chameleon fold and suggest a link between these properties and the SCA1 pathogenesis.
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{{ABSTRACT_PUBMED_15893665}}
==About this Structure==
==About this Structure==
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1V06 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V06 OCA].
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1V06 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1V06 OCA].
==Reference==
==Reference==
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[[Category: Protein-protein interaction]]
[[Category: Protein-protein interaction]]
[[Category: Transcription factor]]
[[Category: Transcription factor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 11:55:38 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 23:01:47 2008''

Revision as of 20:01, 28 July 2008

Image:1v06.png

Template:STRUCTURE 1v06

AXH DOMAIN OF THE TRANSCRIPTION FACTOR HBP1 FROM M.MUSCULUS

Template:ABSTRACT PUBMED 15893665

About this Structure

1V06 is a Single protein structure of sequence from Mus musculus. Full experimental information is available from OCA.

Reference

The AXH domain adopts alternative folds the solution structure of HBP1 AXH., de Chiara C, Menon RP, Adinolfi S, de Boer J, Ktistaki E, Kelly G, Calder L, Kioussis D, Pastore A, Structure. 2005 May;13(5):743-53. PMID:15893665

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