Abstract:
:An area of 500 kb at the proximal end of the polycystic kidney disease 1 (PKD1) region has been mapped in detail, with 260 kb cloned in cosmids. The area cloned from normal individuals contains two homologous but divergent regions each of 75 kb, including the previously described marker 26-6. Pulsed-field gel electrophoresis identified a duplication of 75 kb of this region, referred to as the OX duplication (OXdup), in three patients with PKD1. The OXdup probably arose by an unequal exchange promoted by misalignment of partially homologous areas. Study of the OXdup in a large PKD1 family showed that it segregated with PKD1 in just one-half of the family, indicating that a recent crossover had occurred between the OXdup and PKD1 and showing that it was not a PKD1 mutation. Further analysis identified an OXdup breakpoint fragment: the OXdup was subsequently identified in 2 normal individuals of 110 assayed. The finding of the OXdup and in other individuals an 11-kb deletion (OXdel) at a similar point within this duplicated area indicates that this is an unusually unstable genomic region.
journal_name
Genomicsjournal_title
Genomicsauthors
Harris PC,Thomas S,MacCarthy AB,Stallings RL,Breuning MH,Jenne DE,Fink TM,Buckle VJ,Ratcliffe PJ,Ward CJdoi
10.1006/geno.1994.1507subject
Has Abstractpub_date
1994-09-15 00:00:00pages
321-30issue
2eissn
0888-7543issn
1089-8646pii
S0888-7543(84)71507-2journal_volume
23pub_type
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