Patterns of somatic mutations in immunoglobulin variable genes.
Patterns of somatic mutations in immunoglobulin variable genes.
复制标题
免疫球蛋白可变基因的体细胞突变模式。
DOI:
10.1093/genetics/115.1.169
复制
发表时间:
1987
期刊:
影响因子:
3.3
通讯作者:
Glickman,BW
中科院分区:
文献类型:
--
作者:
Golding,GB;Gearhart,PJ;Glickman,BW
The mechanism responsible for somatic mutation in the variable genes of antibodies is unknown and may differ from previously described mechanisms that produce mutation in DNA. We have analyzed 421 somatic mutations from the rearranged immunoglobulin variable genes of mice to determine (1) if the nucleotide substitutions differ from those generated during meiosis and (2) if the presence of nearby direct and inverted repeated sequences could template mutations around the variable gene. The results reveal a difference in the pattern of substitutions obtained from somatic mutationsvs.meiotic mutations. An increased frequency of T:A to C:G transitions and a decreased frequency of mutations involving a G in the somatic mutants compared to the meiotic mutants is indicated. This suggests that the mutational processes responsible for somatic mutation in antibody genes differs from that responsible for mutation during meiosis. An analysis of the local DNA sequences revealed many direct repeats and palindromic sequences that were capable of templating some of the known mutations. Although additional factors may be involved in targeting mutations to the variable gene, mistemplating by nearby repeats may provide a mechanism for the enhancement of somatic mutation.
登录
查看更多内容
影响因子:
4.8
作者:
T. Kunkel;P. S. Alexander
通讯作者:
P. S. Alexander
影响因子:
14.9
作者:
R. Ollo;Charles Auffray;Jean;François Rougeon
通讯作者:
François Rougeon
DOI:
--
发表时间:
1984
影响因子:
11.1
作者:
J. D. de Boer;L. S. Ripley
通讯作者:
L. S. Ripley
影响因子:
64.8
作者:
H. Sakano;R. Maki;Y. Kurosawa;W. Roeder;S. Tonegawa
通讯作者:
S. Tonegawa
DOI:
--
发表时间:
1982
期刊:
Nucleic Acids Res.
影响因子:
--
作者:
Gillian E. Wu;N. Govindji;Nobumichi Hozumi;H. Murialdo
通讯作者:
H. Murialdo