PolyQ: a database describing the sequence and domain context of polyglutamine repeats in proteins

The polyglutamine diseases are caused in part by a gain-of-function mechanism of neuronal toxicity involving protein conformational changes that result in the formation and deposition of β-sheet rich aggregates. Recent evidence suggests that the misfolding mechanism is context-dependent, and that pr...

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Bibliographic Details
Published in:Nucleic acids research 2011-01, Vol.39 (Database issue), p.D272-D276
Main Authors: Robertson, Amy L, Bate, Mark A, Androulakis, Steve G, Bottomley, Stephen P, Buckle, Ashley M
Format: Article
Language:English
Subjects:
Databases, Protein
Disease
Humans
Peptides - chemistry
Protein Structure, Tertiary
Proteins - chemistry
Repetitive Sequences, Amino Acid
Sequence Analysis, Protein
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Summary:The polyglutamine diseases are caused in part by a gain-of-function mechanism of neuronal toxicity involving protein conformational changes that result in the formation and deposition of β-sheet rich aggregates. Recent evidence suggests that the misfolding mechanism is context-dependent, and that properties of the host protein, including the domain architecture and location of the repeat tract, can modulate aggregation. In order to allow the bioinformatic investigation of the context of polyglutamines, we have constructed a database, PolyQ (http://pxgrid.med.monash.edu.au/polyq). We have collected the sequences of all human proteins containing runs of seven or more glutamine residues and annotated their sequences with domain information. PolyQ can be interrogated such that the sequence context of polyglutamine repeats in disease and non-disease associated proteins can be investigated.
ISSN:0305-1048
1362-4962
1362-4962
DOI:10.1093/nar/gkq1100