Dynamic mutation loci: Allele distributions in different populations
Date
1996
Authors
Richards, R.
Crawford, J.
Narahara, K.
Mangelsdorf, M.
Friend, K.
Staples, A.
Denton, M.
Easteal, S.
Hori, T.
Kondo, I.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Annals of Human Genetics, 1996; 60(5):391-400
Statement of Responsibility
R. I. Richards, J. Crawford, K. Narahara, M. Mangelsdorf, K. Friend, A. Staples, M. Denton, S. Easteal, T.-A. Hori, I. Kondo, T. Jenkins, A. Goldman, V. Panich, E. Ferakova and G. R. Sutherland
Conference Name
Abstract
To assess the relative contributions of trans-acting factors (replication and repair functions) and cis-acting elements (repeat and flanking DNA composition) to the mechanism of trinucleotide repeat sequence mutation we have analysed the distribution of copy number polymorphisms at 12 loci associated with dynamic mutations in 15 populations of different ethnic origins. Genome wide instability of repeats in a particular population would be evidence of trans-acting factor instigation of the mutation process, whereas instability at a particular locus (perhaps even in several populations) would be evidence that the composition of the particular locus was the most significant factor contributing to mutation. The FRA16A locus is highly polymorphic in only the European population. Some other loci exhibit distinct distributions of alleles between different populations. Therefore sequences in the vicinity of the repeat - the cis component of a particular locus - appear(s) to be more important in the mutation mechanism than sporadic genome-wide instability induced by trans-acting factors such as the DNA mismatch repair enzymes.
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Dissertation Note
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Article first published online: 28 SEP 2007
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