Putative introns in tRNA genes of prokaryotes.

Putative introns in tRNA genes of prokaryotes.
复制标题

原核生物 tRNA 基因中的假定内含子。

DOI:
--
复制
发表时间:
1983
影响因子:
11.1
通讯作者:
C. Woese
C. Woese
中科院分区:
综合性期刊1区
文献类型:
--
作者:
B. Kaine;R. Gupta;C. Woese

文献摘要

被引文献

相似文献

两个推定的tRNA基因的序列,丝氨酸和亮氨酸,从古细菌硫化叶菌solfataricus包含在反密码子区域的插入序列。此外,这些基因缺乏编码的CCA 3'末端,并且侧翼是富含A + T的DNA片段。内含子可以形成相同的二级结构,这是反密码子柄的双螺旋延伸。所得到的结构包含两个对称放置的3-碱基凸起环,其中位于内含子的切割位点。在测试的一个案例中,基因在基因组中以单拷贝形式存在。
Sequences of two putative tRNA genes, for serine and leucine, from the archaebacterium Sulfolobus solfataricus contain intervening sequences in the anticodon region. Furthermore, the genes lack encoded CCA 3' termini and are flanked by A + T-rich DNA segments. The introns can both form the same secondary structure, which is a double-helical extension of the anticodon stalk. The resulting structure contains two symmetrically placed 3-base bulge loops, in which are located cleavage sites for the introns. In the one case tested, the gene occurs as a single copy in the genome.