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前B细胞中的染色体外DNA底物在免疫球蛋白V-(D)-J连接信号处发生倒位或缺失。

Extrachromosomal DNA substrates in pre-B cells undergo inversion or deletion at immunoglobulin V-(D)-J joining signals.

作者信息

Hesse J E, Lieber M R, Gellert M, Mizuuchi K

出版信息

Cell. 1987 Jun 19;49(6):775-83. doi: 10.1016/0092-8674(87)90615-5.

DOI:10.1016/0092-8674(87)90615-5
PMID:3495343
Abstract

Sequences encoding immunoglobulin variable domains are known to be assembled from variable (V), diversity (D), and joining (J) segments by site-specific recombination. We present a sensitive and rapid assay for V-(D)-J recombination that uses plasmid DNA transiently introduced into transformed pre-B cells, and demonstrates that the recombination is independent of any unique chromosomal context. Sequences sufficient to constitute recombination sites are contained within the 84 and 42 bp flanking, respectively, the murine J kappa 1 and V kappa L8 segments, which include the known heptamer-nonamer V-(D)-J joining signals. Deletion and inversion occur at comparable frequencies. Thus, V-(D)-J recombination may be relatively insensitive to the topological arrangement of sites, and events at the two novel junctions produced by the reaction may be coupled.

摘要

已知编码免疫球蛋白可变区的序列是通过位点特异性重组由可变(V)、多样(D)和连接(J)片段组装而成。我们提出了一种用于V-(D)-J重组的灵敏且快速的检测方法,该方法使用瞬时导入转化前B细胞的质粒DNA,并证明重组独立于任何独特的染色体环境。分别包含在小鼠Jκ1和VκL8片段侧翼84和42 bp内的序列足以构成重组位点,其中包括已知的七聚体-九聚体V-(D)-J连接信号。缺失和倒位以相当的频率发生。因此,V-(D)-J重组可能对位点的拓扑排列相对不敏感,并且反应产生的两个新连接点处的事件可能是相关联的。

相似文献

1
Extrachromosomal DNA substrates in pre-B cells undergo inversion or deletion at immunoglobulin V-(D)-J joining signals.前B细胞中的染色体外DNA底物在免疫球蛋白V-(D)-J连接信号处发生倒位或缺失。
Cell. 1987 Jun 19;49(6):775-83. doi: 10.1016/0092-8674(87)90615-5.
2
Two pairs of recombination signals are sufficient to cause immunoglobulin V-(D)-J joining.两对重组信号足以引起免疫球蛋白V-(D)-J连接。
Science. 1987 Nov 20;238(4830):1134-8. doi: 10.1126/science.3120312.
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High-frequency deletional rearrangement of immunoglobulin kappa gene segments introduced into a pre-B-cell line.引入前B细胞系的免疫球蛋白κ基因片段高频缺失重排。
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The basis for the mechanistic bias for deletional over inversional V(D)J recombination.缺失型V(D)J重组相对于倒位型V(D)J重组的机制性偏好的基础。
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V(D)J recombination frequency is affected by the sequence interposed between a pair of recombination signals: sequence comparison reveals a putative recombinational enhancer element.V(D)J重组频率受一对重组信号之间插入序列的影响:序列比较揭示了一个假定的重组增强子元件。
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A novel type of aberrant recombination in immunoglobulin genes and its implications for V-J joining mechanism.免疫球蛋白基因中一种新型的异常重组及其对V-J连接机制的影响。
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DNA sequence analysis of interlocus recombination between the human T-cell receptor gamma variable (GV) and beta diversity-joining (BD/BJ) sequences on chromosome 7 (inversion 7).人类7号染色体上T细胞受体γ可变区(GV)与β多样性连接区(BD/BJ)序列间基因座间重组的DNA序列分析(7号染色体倒位)
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Immunoglobulin variable region heptamer-nonamer recognition sequence joined to rearranged D-J segment: implications for the immunoglobulin recombinase mechanism.与重排的D-J片段相连的免疫球蛋白可变区七聚体-九聚体识别序列:对免疫球蛋白重组酶机制的影响。
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V(D)J recombination: a functional definition of the joining signals.V(D)J重排:连接信号的功能定义。
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Intermolecular V(D)J recombination is prohibited specifically at the joining step.分子间V(D)J重组在连接步骤中被特异性禁止。
Mol Cell. 1999 Mar;3(3):331-8. doi: 10.1016/s1097-2765(00)80460-8.

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