Abstract:
:The term 'dynamic mutation' was introduced to distinguish the unique properties of expanding, unstable DNA repeat sequences from other forms of mutation. The past decade has seen dynamic mutations uncovered as the molecular basis for a growing number of human genetic diseases and for all of the characterized 'rare' chromosomal fragile sites. The common properties of the repeats in different diseases and fragile sites have given insight into this unique form of DNA instability. While the dynamic mutation mechanism explains some unusual genetic characteristics, unexpected findings have raised new questions and challenged some assumptions about the pathways that lead from mutation to disease. This review will address the current understanding of the molecular mechanisms involved in the dynamic mutation process and elaborate on the pathogenic pathways that lead from expanded repeats to the diseases with which they are associated.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Richards RIdoi
10.1093/hmg/10.20.2187subject
Has Abstractpub_date
2001-10-01 00:00:00pages
2187-94issue
20eissn
0964-6906issn
1460-2083journal_volume
10pub_type
杂志文章,评审abstract::Several known or putative glycosyltransferases are required for the synthesis of laminin-binding glycans on alpha-dystroglycan (αDG), including POMT1, POMT2, POMGnT1, LARGE, Fukutin, FKRP, ISPD and GTDC2. Mutations in these glycosyltransferase genes result in defective αDG glycosylation and reduced ligand binding by α...
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