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Mechanism and control of V(D)J recombination at the immunoglobulin heavy chain locus.

机译:免疫球蛋白重链基因座V(D)J重组的机制和控制。

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摘要

V(D)J recombination assembles antigen receptor variable region genes from component germline variable (V), diversity (D), and joining (J) gene segments. For B cells, such rearrangements lead to the production of immunoglobulin (Ig) proteins composed of heavy and light chains. V(D)J is tightly controlled at the Ig heavy chain locus (IgH) at several different levels, including cell-type specificity, intra- and interlocus ordering, and allelic exclusion. Such controls are mediated at the level of gene segment accessibility to V(D)J recombinase activity. Although much has been learned, many long-standing questions regarding the regulation of IgH locus rearrangements remain to be elucidated. In this review, we summarize advances that have been made in understanding how V(D)J recombination at the IgH locus is controlled and discuss important areas for future investigation.
机译:V(D)J重组从成分种系变量(V),多样性(D)和连接(J)基因片段组装抗原受体可变区基因。对于B细胞,这种重排导致产生由重链和轻链组成的免疫球蛋白(Ig)蛋白。 V(D)J在Ig重链基因座(IgH)受到严格控制,处于几个不同的水平,包括细胞类型特异性,位点间和位点间排序以及等位基因排斥。此类控制介导的V(D)J重组酶活性的基因段可及性水平。尽管已学到很多,但有关IgH基因座重排调控的许多长期存在的问题仍有待阐明。在这篇综述中,我们总结了在了解如何控制IgH基因座上的V(D)J重组方面所取得的进展,并讨论了未来研究的重要领域。

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