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Mutation patterns of amino acid tandem repeats in the human proteome

Mostra el registre parcial de l'element Mularoni, Loris Guigó Serra, Roderic Albà Soler, Mar
dc.contributor.other Universitat Pompeu Fabra 2011-11-28T11:08:17Z 2011-11-28T11:08:17Z 2006
dc.identifier.citation Mularoni L, Guigó R, Albà M M. Mutation patterns of amino acid tandem repeats in the human proteome. Genome Biology 2006; 7(4): 33. DOI 10.1186/gb-2006-7-4-r33
dc.identifier.issn 1465-6906
dc.description.abstract Background: Amino acid tandem repeats are found in nearly one-fifth of human proteins. Abnormal expansion of these regions is associated with several human disorders. To gain further insight into the mutational mechanisms that operate in this type of sequence, we have analyzed a large number of mutation variants derived from human expressed sequence tags (ESTs)./nResults: We identified 137 polymorphic variants in 115 different amino acid tandem repeats. Of these, 77 contained amino acid substitutions and 60 contained gaps (expansions or contractions of the repeat unit). The analysis showed that at least about 21% of the repeats might be polymorphic in humans. We compared the mutations found in different types of amino acid repeats and in adjacent regions. Overall, repeats showed a five-fold increase in the number of gap mutations compared to adjacent regions, reflecting the action of slippage within the repetitive structures. Gap and substitution mutations were very differently distributed between different amino acid repeat types. Among repeats containing gap variants we identified several disease and candidate disease genes./nConclusion: This is the first report at a genome-wide scale of the types of mutations occurring in the amino acid repeat component of the human proteome. We show that the mutational dynamics of different amino acid repeat types are very diverse. We provide a list of loci with highly variable repeat structures, some of which may be potentially involved in disease.
dc.description.sponsorship This research was funded by grants BIO2002-04426-C02-01 and BIO2003-05073 from Ministerio de Ciencia y Tecnología (Spain), and STAR European Project.
dc.language.iso eng
dc.publisher BioMed Central
dc.rights © 2006 Mularoni et al.; licensee BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This article is also available at
dc.subject.other Genètica humana
dc.subject.other Biologia molecular
dc.subject.other Polimorfisme genètic
dc.title Mutation patterns of amino acid tandem repeats in the human proteome
dc.type info:eu-repo/semantics/article
dc.subject.keyword Codon
dc.subject.keyword Humans
dc.subject.keyword Proteome
dc.subject.keyword Amino Acid repetitive sequences
dc.subject.keyword Protein sequence analysis
dc.subject.keyword Amino Acid substitution
dc.subject.keyword Expressed sequence tags
dc.subject.keyword Mutation
dc.relation.projectID info:eu-repo/grantAgreement/ES/1PN/BIO2002-04426
dc.relation.projectID info:eu-repo/grantAgreement/ES/1PN/BIO2003-05073
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion

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