The simple repeat poly(dT-dG).poly(dC-dA) common to eukaryotes is absent from eubacteria and archaebacteria and rare in protozoans.

The simple repeat poly(dT-dG).poly(dC-dA) common to eukaryotes is absent from eubacteria and archaebacteria and rare in protozoans.
复制标题

真核生物常见的简单重复聚(dT-dG).聚(dC-dA)在真细菌和古细菌中不存在,在原生动物中也很少见。

DOI:
10.1093/oxfordjournals.molbev.a040399
复制
发表时间:
1986
影响因子:
10.7
通讯作者:
Ivarie,R
Ivarie,R
中科院分区:
生物学1区
文献类型:
--
作者:
Morris,J;Kushner,SR;Ivarie,R

文献摘要

参考文献

被引文献

相似文献

通过 Southern 印迹和 DNA 狭缝印迹杂交,对多种原核和真核生物体的基因组 DNA 进行了简单重复序列聚 (dT-dG).聚 (dC-dA) 的分析。与其他人的发现一致,我们发现动物界的所有生物体(例如哺乳动物、爬行动物、两栖动物、鱼类、甲壳类动物、昆虫、水母、线虫)中存在多个副本的简单交替序列。 TG 元素也在低等真核生物(酿酒酵母、粗糙脉孢菌和盘基网柄菌)中发现,而在原生动物(尖毛虫和嗜热四膜虫)中出现的频率要低得多。该序列还在高等植物(玉米)中以高拷贝数重复,并且在单细胞绿藻(莱茵衣藻)中以非常高的水平重复。尽管每个单倍体基因组的重复拷贝数通常与基因组大小成正比,但 (TG)25/100-kb 基因组 DNA 的数量存在大于 1,000 倍的变化。相比之下,没有发现欧盟或古细菌——包括黄色粘球菌(其生命周期与粘菌盘基网柄菌的生命周期非常相似)和火山盐杆菌(其基因组包含其他重复序列)的基因组DNA含有可检测量的该序列。计算机搜索也未能在人类线粒体 DNA 中找到 TG 元件。
Genomic DNA from a wide variety of prokaryotic and eukaryotic organisms has been assayed for the simple repeat sequence poly(dT-dG).poly(dC-dA) by Southern blotting and DNA slot blot hybridizations. Consistent with findings of others, we have found the simple alternating sequence to be present in multiple copies in all organisms in the animal kingdom (e.g., mammals, reptiles, amphibians, fish, crustaceans, insects, jellyfish, nematodes). The TG element was also found in lower eukaryotes (Saccharomyces cerevisiae, Neurospora crassa, and Dictyostelium discoideum) and at a much lower frequency in protozoans (Oxytricha fallux and Tetrahymena thermophila). The sequence was also repeated in high copy number in a higher plant (Zea mays) as well as at very high levels in a unicellular green alga (Chlamydomonas reinhardi). Although the copy number of the repeat per haploid genome was generally proportional to genome size, there was a greater-than-1,000-fold variation in the number of (TG)25/100-kb genomic DNA. By contrast, no eu-or archaebacterium--including Myxococcus xanthus, whose life cycle is very similar to that of the slime mold Dictyostelium discoideum, and Halobacter volcanii, whose genome contains other repeated sequences--was found whose genomic DNA contained this sequence in detectable amounts. A computer search also failed to find the TG element in human mitochondrial DNA.
非 Alu 家族散布在人类 DNA 中的重复序列及其转录活性。
DOI: 10.1093/nar/12.6.2669
发表时间: 1984
影响因子: 14.9
作者:
Sun,L;Paulson,KE;Schmid,CW;Kadyk,L;Leinwand,L
通讯作者: Leinwand,L
相同胚胎和浆细胞瘤 kappa V 区基因的组织和完整序列。
DOI: --
发表时间: 1980
影响因子: 4.8
作者:
Y. Nishioka;P. Leder
通讯作者: P. Leder
盐杆菌基因组的异常物理组织
DOI: --
发表时间: 1982
期刊: Nature
影响因子: 64.8
作者:
C. Sapienza;W. Doolittle
通讯作者: W. Doolittle
催乳素基因的结构分析表明其 5 端有单独的起源
DOI: 10.1038/297603a0
发表时间: 1982
期刊: Nature
影响因子: 64.8
作者:
N. Cooke;J. Baxter
通讯作者: J. Baxter
DOI: --
发表时间: 1983
影响因子: 5.3
作者:
R. Ivarie;B. Schacter;P. O’Farrell
通讯作者: P. O’Farrell