Complexes from Trypanosoma brucei that exhibit deletion editing and other editing-associated properties

Complexes from Trypanosoma brucei that exhibit deletion editing and other editing-associated properties
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来自布氏锥虫的复合物表现出删除编辑和其他编辑相关特性

DOI:
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发表时间:
1996
影响因子:
5.3
通讯作者:
Kenneth D. Stuart
Kenneth D. Stuart
中科院分区:
生物学2区
文献类型:
--
作者:
R. A. Corell;L. Read;G. R. Riley;Jacob K. Nellissery;Thomas E. Allen;M. L. Kable;Michael D. Wachal;S. Seiwert;P. J. Myler;Kenneth D. Stuart

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着丝质体中许多线粒体基因的转录本经过RNA编辑,这是一种插入和删除尿苷的转录后过程。通过体外缺失编辑测试,我们发现来自布鲁氏锥虫线粒体裂解物(S.D. Seiwert and K.D. Stuart), Science 266:114-117,1994)沉积物的编辑活性峰值约为20S。RNA解旋酶、末端尿苷基转移酶、RNA连接酶和腺苷化活性,这些可能在编辑中起作用,共同沉积分布广泛,每种活性在35 ~ 40S时最多。大多数atp酶6 (A6)引导RNA和未编辑的A6 mRNA在20 ~ 30S时沉积,有一些在梯度中进一步沉积,而大多数编辑过的A6 mRNA在bb0 ~ 35S时沉积。几种线粒体蛋白在紫外线处理下与引导RNA特异性交联,也在甘油梯度中沉淀。值得注意的是,65-kDa蛋白主要在20S左右沉积,90-kDa蛋白在35 - 40S沉积,25-kDa蛋白在<10S时存在。大多数与gRNA形成的核糖核蛋白复合物在体外10 ~ 20S沉淀,只有一个在30 ~ 45S沉淀。这些结果表明,RNA编辑发生在一个多组分复合体中。讨论了20S复合物与35 ~ 40S复合物的潜在功能及其相互关系。
Transcripts from many mitochondrial genes in kinetoplastids undergo RNA editing, a posttranscriptional process which inserts and deletes uridines. By assaying for deletion editing in vitro, we found that the editing activity from Trypanosoma brucei mitochondrial lysates (S.D. Seiwert and K.D. Stuart), Science 266:114-117,1994) sediments with a peak of approximately 20S. RNA helicase, terminal uridylyl transferase, RNA ligase, and adenylation activities, which may have a role in editing, cosediment in a broad distribution, with most of each activity at 35 to 40S. Most ATPase 6 (A6) guide RNA and unedited A6 mRNA sediments at 20 to 30S, with some sedimenting further into the gradient, while most edited A6 mRNA sediments at >35S. Several mitochondrial proteins which cross-link specifically with guide RNA upon UV treatment also sediment in glycerol gradients. Notably, a 65-kDa protein sediments primarily at approximately 20S, a 90-kDa protein sediments at 35 to 40S, and a 25-kDa protein is present at <10S. Most ribonucleoprotein complexes that form with gRNA in vitro sediment at 10 to 20S, except for one, which sediments at 30 to 45S. These results suggest that RNA editing takes place within a multicomponent complex. The potential functions of and relationships between the 20S and 35 to 40S complexes are discussed.
动质体线粒体中的 RNA 编辑。
DOI: 10.1096/fasebj.7.1.8422975
发表时间: 1993
期刊: FASEB journal : official publication of the Federation of American Societies for Experimental Biology
影响因子: --
作者:
Hajduk,SL;Harris,ME;Pollard,VW
通讯作者: Pollard,VW
用于对布氏锥虫脱细胞色素 b mRNA 进行相同编辑的多个引导 RNA 具有不寻常的小环位置,并且受到发育调节。
DOI: --
发表时间: 1994
期刊: The Journal of biological chemistry
影响因子: --
作者:
Riley,GR;Corell,RA;Stuart,K
通讯作者: Stuart,K
引导不参与RNA编辑的RNA分子形成不含mRNA的核糖核蛋白复合物。
DOI: 10.1016/0167-4781(95)00025-c
发表时间: 1995
期刊: Biochimica et biophysica acta
影响因子: --
作者:
Shu,HH;Stuart,K;Göringer,HU
通讯作者: Göringer,HU
不同的布氏锥虫引导 RNA 分子在体外与相同的线粒体蛋白互补体相关联。
DOI: 10.1093/nar/22.11.1988
发表时间: 1994
影响因子: 14.9
作者:
Köller,J;Nörskau,G;Paul,AS;Stuart,K;Göringer,HU
通讯作者: Göringer,HU
利什曼原虫动质体线粒体含有末端尿苷酰转移酶和RNA连接酶活性。
DOI: --
发表时间: 1989
期刊: The Journal of biological chemistry
影响因子: --
作者:
Bakalara,N;Simpson,AM;Simpson,L
通讯作者: Simpson,L