RAG2's non-core domain contributes to the ordered regulation of V(D)J recombination.

RAG2's non-core domain contributes to the ordered regulation of V(D)J recombination.
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DOI:
10.1093/nar/gkn553
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发表时间:
2008-10
影响因子:
14.9
通讯作者:
Schlissel MS
Schlissel MS
中科院分区:
生物学2区
文献类型:
--
作者:
Curry JD;Schlissel MS

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可变(多样性)连接免疫基因座位的[V(D)J]重组以有序的方式进行,首先D到J部分重组,然后上游V加入该重组。我们提出的证据表明,重组激活基因(RAG)蛋白2的非核心区参与了重组顺序的调节。在缺乏RAG2非核心区的小鼠中,三方免疫基因座的有序重排被扰乱,直接V到D重排增加10-1000倍。与野生型(WT)动物相比,核心β动物TCRRAG2和TCRRAG2 D基因片段之间的某些形式的染色体间易位也增加了。此外,与WT RAG2小鼠相比,RAG2核心小鼠对正确重组信号序列(RSS)的简明使用似乎受到干扰。
Variable (diversity) joining [V(D)J] recombination of immune gene loci proceeds in an ordered manner with D to J portions recombining first and then an upstream V joins that recombinant. We present evidence that the non-core domain of recombination activating gene (RAG) protein 2 is involved in the regulation of recombinatorial order. In mice lacking the non-core domain of RAG2 the ordered rearrangement is disturbed and direct V to D rearrangements are 10- to 1000-times increased in tri-partite immune gene loci. Some forms of inter-chromosomal translocations between TCRβ and TCRδ D gene segments are also increased in the core RAG2 animals as compared with their wild-type (WT) counterparts. In addition, the concise use of proper recombination signal sequences (RSSs) appears to be disturbed in the core RAG2 mice as compared with WT RAG2 animals.
DOI: 10.1084/jem.185.4.609
发表时间: 1997-02-17
期刊: The Journal of experimental medicine
影响因子: --
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