TY - JOUR
T1 - The Rates of G:C→T:A and G:C→C;G Transversions at CpG Dinucleotides in the Human Factor IX Gene
AU - Ketterling, Rhett P.
AU - Vielhaber, Erica
AU - Sommer, Steve S.
N1 - Copyright:
Copyright 2004 Elsevier B.V., All rights reserved.
PY - 1994
Y1 - 1994
N2 - We have identified eight independent transversions at CpG in 290 consecutive families with hemophilia B. These eight transversions account for 16.3% of all independent transversions in our sample, yet the expected frequency of CpG transversions at random in the factor IX gene is only 2.6% (P<.01). The aggregate data suggest that the two types of CpG transversions (G:C→T:A and G:C→C:G) possess similar mutation rates (24.8 × 10-10 and 20.6 × 10-10, respectively), which are about fivefold greater than the comparable rates for transversions at non-CpG dinucleotides. The enhancement of transversions at CpG suggests that the model by which mutations occur at CpG may need to be reevaluated. The relationship, if any, between deamination of 5-methyl cytosine and enhancement of transversions at CpG remains to be defined.
AB - We have identified eight independent transversions at CpG in 290 consecutive families with hemophilia B. These eight transversions account for 16.3% of all independent transversions in our sample, yet the expected frequency of CpG transversions at random in the factor IX gene is only 2.6% (P<.01). The aggregate data suggest that the two types of CpG transversions (G:C→T:A and G:C→C:G) possess similar mutation rates (24.8 × 10-10 and 20.6 × 10-10, respectively), which are about fivefold greater than the comparable rates for transversions at non-CpG dinucleotides. The enhancement of transversions at CpG suggests that the model by which mutations occur at CpG may need to be reevaluated. The relationship, if any, between deamination of 5-methyl cytosine and enhancement of transversions at CpG remains to be defined.
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M3 - Article
C2 - 8178822
AN - SCOPUS:0028316109
SN - 0002-9297
VL - 54
SP - 831
EP - 835
JO - American journal of human genetics
JF - American journal of human genetics
IS - 5
ER -