Abstract:
:DNA samples from 60 unrelated Belgian hypercholesterolemic patients were subjected to heteroduplex analysis of exon 4 of the low density lipoprotein receptor (LDLR) gene. Aberrant mobility bands were detected in 2 patients and the underlying mutations were characterized by DNA sequence analysis. Both mutations, a 19-bp insertion at codon 141 and a 23bp deletion at codon 168, produce premature stop codons in the highly conserved ligand binding domain of the mature LDLR. Sequence data indicated that mispairing between short direct repeats during DNA replication is the most probable mechanism by which these mutations could have arisen. Our observations are consistent with an endogenous sequence-directed mechanism of mutagenesis.
journal_name
Hum Genetjournal_title
Human geneticsauthors
Peeters AV,Van Gaal LF,Theart L,Langenhoven E,Kotze MJdoi
10.1007/BF00191796subject
Has Abstractpub_date
1995-10-01 00:00:00pages
401-6issue
4eissn
0340-6717issn
1432-1203journal_volume
96pub_type
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