Increased hypermutation at G and C nucleotides in immunoglobulin variable genes from mice deficient in the MSH2 mismatch repair protein.
Increased hypermutation at G and C nucleotides in immunoglobulin variable genes from mice deficient in the MSH2 mismatch repair protein.
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DOI:
10.1084/jem.187.11.1745
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发表时间:
1998-06-01
期刊:
影响因子:
--
通讯作者:
Gearhart PJ
中科院分区:
文献类型:
--
作者:
Phung QH;Winter DB;Cranston A;Tarone RE;Bohr VA;Fishel R;Gearhart PJ
Rearranged immunoglobulin variable genes are extensively mutated after stimulation of B lymphocytes by antigen. Mutations are likely generated by an error-prone DNA polymerase, and the mismatch repair pathway may process the mispairs. To examine the role of the MSH2 mismatch repair protein in hypermutation, Msh2 −/− mice were immunized with oxazolone, and B cells were analyzed for mutation in their VκOx1 light chain genes. The frequency of mutation in the repair-deficient mice was similar to that in Msh2 +/+ mice, showing that MSH2-dependent mismatch repair does not cause hypermutation. However, there was a striking bias for mutations to occur at germline G and C nucleotides. The results suggest that the hypermutation pathway frequently mutates G·C pairs, and a MSH2-dependent pathway preferentially corrects mismatches at G and C.
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影响因子:
15.3
作者:
Hinds-Frey, K R;Nishikata, H;Litman, R T;Litman, G W
通讯作者:
Litman, G W
DOI:
10.1084/jem.187.11.1735
发表时间:
1998-06-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Jacobs H;Fukita Y;van der Horst GT;de Boer J;Weeda G;Essers J;de Wind N;Engelward BP;Samson L;Verbeek S;de Murcia JM;de Murcia G;te Riele H;Rajewsky K
通讯作者:
Rajewsky K
影响因子:
64.8
作者:
BRENNER, S;MILSTEIN, C
通讯作者:
MILSTEIN, C
影响因子:
56.9
作者:
DRUMMOND, JT;LI, GM;MODRICH, P
通讯作者:
MODRICH, P
DOI:
10.1073/pnas.80.11.3439
发表时间:
1983-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
GEARHART, PJ;BOGENHAGEN, DF
通讯作者:
BOGENHAGEN, DF