A/T mutagenesis in hypermutated immunoglobulin genes strongly depends on PCNAK164 modification.
A/T mutagenesis in hypermutated immunoglobulin genes strongly depends on PCNAK164 modification.
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DOI:
10.1084/jem.20070902
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发表时间:
2007-08-06
影响因子:
15.3
通讯作者:
Jacobs, Heinz
中科院分区:
文献类型:
--
作者:
Langerak, Petra;Nygren, Anders O. H.;Krijger, Peter H. L.;van den Berk, Paul C. M.;Jacobs, Heinz
B cells use translesion DNA synthesis (TLS) to introduce somatic mutations around genetic lesions caused by activation-induced cytidine deaminase. Monoubiquitination at lysine164 of proliferating cell nuclear antigen (PCNAK164) stimulates TLS. To determine the role of PCNAK164 modifications in somatic hypermutation, PCNAK164R knock-in mice were generated. PCNAK164R/K164R mutants are born at a sub-Mendelian frequency. Although PCNAK164R/K164R B cells proliferate and class switch normally, the mutation spectrum of hypermutated immunoglobulin (Ig) genes alters dramatically. A strong reduction of mutations at template A/T is associated with a compensatory increase at G/C, which is a phenotype similar to polymerase η (Polη) and mismatch repair–deficient B cells. Mismatch recognition, monoubiquitinated PCNA, and Polη likely cooperate in establishing mutations at template A/T during replication of Ig genes.
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影响因子:
16
作者:
Guo, Caixia;Sonoda, Eiichiro;Friedberg, Errol C.
通讯作者:
Friedberg, Errol C.
DOI:
10.1084/jem.20050292
发表时间:
2005-04-18
期刊:
The Journal of experimental medicine
影响因子:
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Delbos F;De Smet A;Faili A;Aoufouchi S;Weill JC;Reynaud CA
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Reynaud CA
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:
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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
DOI:
10.1073/pnas.0505949102
发表时间:
2005-12-20
影响因子:
11.1
作者:
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通讯作者:
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影响因子:
10.5
作者:
Kai, M;Wang, TSF
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Wang, TSF