The spinocerebellar ataxia type 1 protein, ataxin-1, has RNA-binding activity that is inversely affected by the length of its polyglutamine tract.

Abstract:

:Spinocerebellar ataxia type 1 (SCA1) is an autosomal dominant neurodegenerative disease caused by the expansion of a polyglutamine tract within the SCA1 product, ataxin-1. Previously, using transgenic mice, it was demonstrated that in order for a mutant allele of ataxin-1 to cause disease it must be transported to the nucleus of the neuron. Using an in vitro RNA-binding assay, we demonstrate that ataxin-1 does bind RNA and that this binding diminishes as the length of its polyglutamine tract increases. These observations suggest that ataxin-1 plays a role in RNA metabolism and that the expansion of the polyglutamine tract may alter this function.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Yue S,Serra HG,Zoghbi HY,Orr HT

doi

10.1093/hmg/10.1.25

subject

Has Abstract

pub_date

2001-01-01 00:00:00

pages

25-30

issue

1

eissn

0964-6906

issn

1460-2083

journal_volume

10

pub_type

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