DNA polymorphism and linkage disequilibrium within the apolipoprotein CII locus on human chromosome 19.
The gene for human apolipoprotein CII (APOCII) is located on the proximal long arm of chromosome 19. It has been established as a closely linked marker for myotonic dystrophy (DM), the most common form of adult muscular dystrophy. In the present linkage study, we have analysed 6 APOCII RFLPs in 213 haplotypes: TaqI, 3.8/3.5 kb; BgII, 12.0/9.0 kb; BanI, 2.5/1.6 kb; BamHI, 6.0/4.9 kb; NcoI, 14.5/11.5 kb, and AvaII, 0.6/0.4 kb. The polymorphic enzyme sites were determined to be present at the following frequencies: TaqI, 0.43; BglI, 0.51; BanI, 0.25; BamHI, 0.99; NcoI, 0.51, and AvaII, 0.52. Ordering of the polymorphic sites, 5'----3', has been determined to be (NcoI-BglI)-AvaII-BanI-TaqI. Significant disequilibrium was seen between 5 of the APOCII RFLPs.
Division of Genetics, Children's Hospital of Eastern Ontario, Ottawa, Canada.
A E
AE
MacKenzie
H L
HL
MacLeod
S C
SC
Leblond
N
N
Monteith
D
D
Lahey
R G
RG
Korneluk
D000483:Alleles; D053304:Apolipoprotein C-II; D001056:Apolipoproteins C / Q000235:genetics*; D001483:Base Sequence; D002874:Chromosome Mapping; D002888:Chromosomes, Human, Pair 19; D004247:DNA / Q000235:genetics*; D006801:Humans; D015810:Linkage Disequilibrium / Q000235:genetics*; D008969:Molecular Sequence Data; D011110:Polymorphism, Genetic / Q000235:genetics*; D012150:Polymorphism, Restriction Fragment Length
D053304:Apolipoprotein C-II; D001056:Apolipoproteins C; D004247:DNA