Suppr超能文献

具有独特结构的人类U4 RNA假基因。

A pseudogene for human U4 RNA with a remarkable structure.

作者信息

Hammarström K, Westin G, Pettersson U

出版信息

EMBO J. 1982;1(6):737-9. doi: 10.1002/j.1460-2075.1982.tb01239.x.

Abstract

The human DNA library of Lawn et al. (1978) was screened for sequences complementary to the small nuclear (sn) RNA U4. Several positive clones were identified by screening 100 000 recombinants, indicating that U4 sequences like other snRNA sequences are dispersed in the human genome. One recombinant was characterized in detail by subcloning a Bg/II fragment 1.9 kilobases (kb) long in the pBR322 plasmid. The subcloned fragment was partially sequenced and the results revealed a pseudogene for U4 RNA. The pseudogene was found to have a remarkable structure; it contains a sequence that, except in two positions, matches the first 68 nucleotides of the human U4 RNA sequence and the pseudogene is, moreover, flanked by perfect direct repeats 20 bp long. The results support the model of van Arsdell et al. (1981) suggesting that certain snRNA pseudogenes arise by reverse transcription of the RNA followed by integration of the cDNA copy at a new chromosomal locus.

摘要

用人的DNA文库(Lawn等人,1978年)筛选与小核(sn)RNA U4互补的序列。通过筛选100,000个重组体鉴定出几个阳性克隆,这表明U4序列与其他snRNA序列一样分散在人类基因组中。通过在pBR322质粒中对一个1.9千碱基(kb)长的Bg/II片段进行亚克隆,对其中一个重组体进行了详细表征。对亚克隆片段进行了部分测序,结果揭示了一个U4 RNA的假基因。发现该假基因具有显著的结构;它包含一个序列,除了两个位置外,与人类U4 RNA序列的前68个核苷酸匹配,而且该假基因两侧是20 bp长的完美正向重复序列。这些结果支持了van Arsdell等人(1981年)的模型,该模型表明某些snRNA假基因是由RNA的逆转录产生,随后cDNA拷贝整合到新的染色体位点。

相似文献

3
Nonrandom integration of human U4 RNA pseudogenes.人类U4 RNA假基因的非随机整合
Mol Cell Biol. 1985 May;5(5):943-8. doi: 10.1128/mcb.5.5.943-948.1985.
4
A candidate gene for human U1 RNA.人类U1 RNA的一个候选基因。
EMBO J. 1982;1(1):133-7. doi: 10.1002/j.1460-2075.1982.tb01136.x.
9
Novel structure of a human U6 snRNA pseudogene.人类U6小核仁RNA假基因的新结构
Gene. 1985;36(1-2):195-9. doi: 10.1016/0378-1119(85)90086-1.
10

引用本文的文献

1
A plant pseudogene for U1 RNA.一种植物U1 RNA假基因。
Plant Mol Biol. 1989 Jun;12(6):709-11. doi: 10.1007/BF00044161.
5
Precursors of U4 small nuclear RNA.U4小核RNA的前体
J Cell Biol. 1984 Sep;99(3):1140-4. doi: 10.1083/jcb.99.3.1140.
6
Clustered genes for human U2 RNA.人类U2 RNA的成簇基因。
Proc Natl Acad Sci U S A. 1984 Jun;81(12):3811-5. doi: 10.1073/pnas.81.12.3811.
7
10
Nonrandom integration of human U4 RNA pseudogenes.人类U4 RNA假基因的非随机整合
Mol Cell Biol. 1985 May;5(5):943-8. doi: 10.1128/mcb.5.5.943-948.1985.

本文引用的文献

6
Transposable elements.转座元件
Cell. 1980 Jul;20(3):579-95. doi: 10.1016/0092-8674(80)90305-0.
10
A candidate gene for human U1 RNA.人类U1 RNA的一个候选基因。
EMBO J. 1982;1(1):133-7. doi: 10.1002/j.1460-2075.1982.tb01136.x.

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验