Multiple functions of MRN in end-joining pathways during isotype class switching.
Multiple functions of MRN in end-joining pathways during isotype class switching.
复制标题
DOI:
10.1038/nsmb.1639
复制
发表时间:
2009-08
影响因子:
16.8
通讯作者:
中科院分区:
文献类型:
--
作者:
The Mre11/Rad50/NBS1 (MRN) complex plays many roles in response to DNA double strand breaks (DSBs), but its functions in repair by non homologous end joining (NHEJ) pathways are poorly understood. We have investigated requirements for MRN in Class Switch Recombination (CSR), a programmed DNA rearrangement in B lymphocytes that requires NHEJ. To this end we have engineered mice that lack the entire MRN complex in B lymphocytes, or possess an intact complex harboring mutant Mre11 lacking DNA nuclease activities. MRN deficiency confers a striking defect in CSR, impacting both the Classic and Alternative NHEJ pathways. In contrast, absence of Mre11 nuclease activities causes a milder phenotype, revealing a separation of function within the complex. We propose a model in which MRN stabilizes distant breaks and processes DNA termini to facilitate repair by both the Classical and Alternative NHEJ pathways.
登录
查看更多内容
影响因子:
16
作者:
Lengsfeld, Bettina M.;Rattray, Alison J.;Paull, Tanya T.
通讯作者:
Paull, Tanya T.
影响因子:
30.5
作者:
Manis, JP;Morales, JC;Carpenter, PB
通讯作者:
Carpenter, PB
影响因子:
64.5
作者:
Buis J;Wu Y;Deng Y;Leddon J;Westfield G;Eckersdorff M;Sekiguchi JM;Chang S;Ferguson DO
通讯作者:
Ferguson DO
影响因子:
16
作者:
Deriano, Ludovic;Stracker, Travis H.;Baker, Annalee;Petrini, John H. J.;Roth, David B.
通讯作者:
Roth, David B.
影响因子:
16
作者:
Lou, ZK;Minter-Dykhouse, K;Chen, JJ
通讯作者:
Chen, JJ