Recent Studies of RNase P

Recent Studies of RNase P
复制标题

RNase P 的最新研究

DOI:
10.1128/9781555818333.ch6
复制
发表时间:
1995
期刊:
RNA
影响因子:
4.5
通讯作者:
L. Kirsebom
L. Kirsebom
中科院分区:
生物学3区
文献类型:
--
作者:
S. Altman;S. Talbot;L. Kirsebom

文献摘要

参考文献

被引文献

相似文献

本章主要是关于大肠杆菌酶的研究进展报告。 RNase P 是一种核酸内切酶,负责成熟 tRNA 5' 末端的生物合成,是一种核糖核蛋白。本章主要关注 RNase P 亚基的结构和功能之间的关系,这是通过对真细菌来源的酶进行的研究确定的。当前 RNase P 研究的两个重要目标是鉴定该酶的活性位点和阐明其控制的化学反应的细节。多项证据表明 M1 RNA 中至少包含 60 至 92、230 至 260 和 290 至 360 核苷酸的区域对于催化至关重要。证据来自对缺失突变体的分析、对单个 tRNA 前体和蛋白质辅因子与 M1 RNA 结合的研究,以及对二价金属离子与 M1 RNA 结合的研究。一些显着影响M1 RNA活性的点突变也位于这些区域。本章中显示了这些结果的摘要。来自大肠杆菌的 RNase P 蛋白辅因子(C5 蛋白)是一种由 119 个氨基酸组成的高碱性分子,分子量为 13,800 道尔顿。
This chapter is primarily a progress report on work with the enzyme from Escherichia coli. RNase P, the endonuclease responsible for the biosynthesis of the 5' termini of mature tRNA, is a ribonucleoprotein. The chapter primarily focuses on relationships between the structure and function of the subunits of RNase P, as determined from studies with the enzyme from eubacterial sources. Two important goals of current research on RNase P are identification of the active site of the enzyme and elucidation of the details of the chemical reaction governed by it. Several lines of evidence have implicated the region in M1 RNA that contains at least nucleotides 60 to 92, 230 to 260, and 290 to 360 as being essential for catalysis. The evidence comes from analysis of deletion mutants, studies of the binding of both individual tRNA precursors and the protein cofactor to M1 RNA, and studies of the binding of divalent metal ions to M1 RNA. Some point mutations that significantly affect the activity of M1 RNA are also located in these regions. A summary of these results is shown in the chapter. The protein cofactor of RNase P from E. coli (C5 protein) is a highly basic molecule of 119 amino acids, with a molecular mass of 13,800 daltons.
核糖核酸酶 P(一种核糖核蛋白酶)的蛋白质部分的作用。
DOI: 10.1126/science.3122322
发表时间: 1988
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Reich,C;Olsen,GJ;Pace,B;Pace,NR
通讯作者: Pace,NR
RNA 酶的模型底物。
DOI: 10.1126/science.2443980
发表时间: 1987
期刊: Science (New York, N.Y.)
影响因子: --
作者:
McClain,WH;Guerrier-Takada,C;Altman,S
通讯作者: Altman,S
DOI: 10.1016/s0021-9258(18)88920-7
发表时间: 1985-05
期刊: The Journal of biological chemistry
影响因子: --
作者:
C. Doersen;C. Guerrier-Takada;S. Altman;G. Attardi
通讯作者: C. Doersen;C. Guerrier-Takada;S. Altman;G. Attardi
DOI: 10.1126/science.2476849
发表时间: 1989-09-22
期刊: SCIENCE
影响因子: 56.9
作者:
GOLD, HA;TOPPER, JN;CRAFT, J
通讯作者: CRAFT, J
DOI: 10.1006/geno.1993.1488
发表时间: 1993-11
期刊: Genomics
影响因子: 4.4
作者:
S. Altman;D. Wesolowski;R. S. Puranam
通讯作者: S. Altman;D. Wesolowski;R. S. Puranam