Most highly repeated dispersed DNA families in the mouse genome

Most highly repeated dispersed DNA families in the mouse genome
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小鼠基因组中重复率最高的分散 DNA 家族

DOI:
10.1128/mcb.4.8.1561-1571.1984
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发表时间:
1984
影响因子:
5.3
通讯作者:
N. Hastie
N. Hastie
中科院分区:
生物学2区
文献类型:
--
作者:
K. Bennett;R. Hill;D. Pietras;M. Woodworth;C. Kane;J. M. Houston;J. Heath;N. Hastie

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先前已经报道了小鼠重复DNA的小型文库的构建(Pietras等人,Nucleic Acids Res.11:6965-6983,1983)。在此,我们报告该文库中的 35 个质粒对应于高度重复(每个基因组超过 30,000 个拷贝)的分散 DNA 序列,可分为不超过 5 个不同的家族。这些家族总共占小鼠基因组的 8% 至 10%。它们包括前面描述的小元件 B1、B2 和 R 以及大 MIF-1 元件。 35 个克隆中有 12 个包含进化保守 (EC) 序列。我们文库中的一个 EC 克隆主要由交替的 dCdT 残基组成;另一个由序列 CCTCT 的串联重复组成。基因组中的大多数 B1 和 B2 似乎是同质的,而 R 序列、EC 和 MIF-1 是异质的。两份早期报告显示疱疹病毒基因组中存在高度重复的哺乳动物 DNA 序列(Peden 等人,Cell 31:71-80,1982;Puga 等人,Cell 31:81-87,1982)。我们表明,与我们的 EC 克隆同源的序列存在于疱疹病毒基因组中,尽管这些多嘧啶序列在痘病毒、腺病毒和猿猴病毒 40 基因组中未检测到。我们在核转录测定中检测包含与所有这些序列同源性的转录本。此外,我们还发现,与 B2 序列同源的小聚腺苷酸化 RNA 分子在未分化的胚胎癌细胞中表达,但在其分化的衍生物中不表达。讨论了这些发现的意义。
The construction of a small library of mouse repetitive DNA has been previously reported (Pietras et al., Nucleic Acids Res. 11:6965-6983, 1983). Here we report that the 35 plasmids in this library corresponding to highly repeated (greater than 30,000 copies per genome) dispersed DNA sequences can be grouped into no more than 5 distinct families. These families together comprise 8 to 10% of the mouse genome. They include the previously described small elements B1, B2, and R and the large MIF-1 element. Twelve of the 35 clones contain evolutionarily conserved (EC) sequences. One EC clone in our library mostly consists of alternating dCdT residues; another consists of tandem repeats of the sequence CCTCT. The majority of B1s and B2s in the genome appear to be homogeneous, whereas R sequences, ECs, and MIF-1s are heterogeneous. Two earlier reports showed highly repeated mammalian DNA sequences in the herpesvirus genome (Peden et al., Cell 31:71-80, 1982; Puga et al., Cell 31:81-87, 1982). We show that sequences homologous to our EC clones are present in the herpesvirus genome, although these polypyrimidine stretches are not detected in poxvirus, adenovirus, and simian virus 40 genomes. We detect transcripts containing homology to all of these sequences in a nuclear transcription assay. Also, we show that small, polyadenylated RNA molecules homologous to B2 sequences are expressed in undifferentiated embryonal carcinoma cells but not in their differentiated derivatives. The significance of these findings is discussed.
小鼠 DNA 中的一个中等重复序列家族。
DOI: 10.1093/nar/8.18.4075
发表时间: 1980
影响因子: 14.9
作者:
Cheng,SM;Schildkraut,CL
通讯作者: Schildkraut,CL
内部缺失的小鼠甲胎蛋白基因的体内构建和表达:在第一个插入序列中存在转录的 Alu 样重复序列。
DOI: 10.1093/nar/10.10.3099
发表时间: 1982
影响因子: 14.9
作者:
Young,PR;Scott,RW;Hamer,DH;Tilghman,SM
通讯作者: Tilghman,SM
BALB/c 成人 β-珠蛋白克隆中发现的三个重复序列家族的位置。
DOI: 10.1093/nar/9.5.1133
发表时间: 1981
影响因子: 14.9
作者:
Haigwood,NL;Jahn,CL;Hutchison3rd,CA;Edgell,MH
通讯作者: Edgell,MH