Concerted evolution of the tandem array encoding primate U2 snRNA (the RNU2 locus) is accompanied by dramatic remodeling of the junctions with flanking chromosomal sequences

Concerted evolution of the tandem array encoding primate U2 snRNA (the RNU2 locus) is accompanied by dramatic remodeling of the junctions with flanking chromosomal sequences
复制标题

编码灵长类 U2 snRNA(RNU2 位点)的串联阵列的协同进化伴随着与侧翼染色体序列的连接的戏剧性重塑

DOI:
10.1093/emboj/18.13.3783
复制
发表时间:
1999
期刊:
The EMBO Journal
影响因子:
--
通讯作者:
A. Weiner
A. Weiner
中科院分区:
--
文献类型:
--
作者:
T. Pavelitz;D. Liao;A. Weiner

文献摘要

参考文献

被引文献

相似文献

编码灵长类U2 snRNA的基因被组织成一个近乎完美的串联阵列(RNU 2基因座),自狒狒和人类分化以来,它已经协调进化了超过3500万年。因此,串联阵列的重复单元在每个物种内基本相同,但在物种之间不同。保持均匀性是因为一个重复单元中的任何变化从阵列中清除或在所有其他重复中固定。有趣的是,尽管串联阵列协同进化,RNU 2的细胞学位置仍然保持不变。我们之前已经发现,在过去的500万年里,在原始人类谱系中,U2串联阵列和侧翼DNA之间的连接序列在200 - 300 bp的区域内发生了重塑。在这里,我们表明,U2串联阵列和侧翼DNA之间的连接发生了戏剧性的重排超过1至>10 kbp的区域在35万年以来的旧世界猴和人科动物的谱系分歧。我们认为,这些重排反映了高水平的遗传活动所需的协同进化,并提出了一个模型来解释为什么保持一个串联重复的多基因家族内的同质性会导致交界处的多样性。
The genes encoding primate U2 snRNA are organized as a nearly perfect tandem array (the RNU2 locus) that has been evolving concertedly for >35 Myr since the divergence of baboons and humans. Thus the repeat units of the tandem array are essentially identical within each species, but differ between species. Homogeneity is maintained because any change in one repeat unit is purged from the array or fixed in all other repeats. Intriguingly, the cytological location of RNU2 has remained unchanged despite concerted evolution of the tandem array. We had found previously that junction sequences between the U2 tandem array and flanking DNA were subject to remodeling over a region of 200‐300 bp during the past 5 Myr in the hominid lineage. Here we show that the junctions between the U2 tandem array and flanking DNA have undergone dramatic rearrangements over a region of 1 to >10 kbp in the 35 Myr since divergence of the Old World Monkey and hominid lineages. We argue that these rearrangements reflect the high level of genetic activity required to sustain concerted evolution, and propose a model to explain why maintenance of homogeneity within a tandemly repeated multigene family would lead to junctional diversity.
同源染色体之间的不平等交换并不是 VNTR 基因座产生新等位基因的主要机制。
DOI: 10.1016/0888-7543(89)90076-1
发表时间: 1989
期刊: Genomics
影响因子: 4.4
作者:
Wolff,RK;Plaetke,R;Jeffreys,AJ;White,R
通讯作者: White,R
灵长类U2小核RNA多基因家族的结构和进化:自然选择下的基因扩增?
DOI: 10.1128/mcb.10.11.5876-5882.1990
发表时间: 1990
影响因子: 5.3
作者:
Matera,AG;Weiner,AM;Schmid,CW
通讯作者: Schmid,CW
染色体内基因转换和重复基因之间序列同质性的维持。
DOI: 10.1093/genetics/100.2.315
发表时间: 1982
期刊: Genetics
影响因子: 3.3
作者:
Nagylaki,T;Petes,TD
通讯作者: Petes,TD
人 U2 小核 RNA 的假基因没有固定的 3 截短位点。
DOI: 10.1093/nar/12.3.1463
发表时间: 1984
影响因子: 14.9
作者:
VanArsdell,SW;Weiner,AM
通讯作者: Weiner,AM
DOI: --
发表时间: 1995-09
期刊: Genetics
影响因子: 3.3
作者:
B. Rockmill;J. Engebrecht;H. Scherthan;J. Loidl;G. Roeder
通讯作者: B. Rockmill;J. Engebrecht;H. Scherthan;J. Loidl;G. Roeder