Synthetic lethal mutations suggest interactions between U5 small nuclear RNA and four proteins required for the second step of splicing

Synthetic lethal mutations suggest interactions between U5 small nuclear RNA and four proteins required for the second step of splicing
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合成致死突变表明 U5 小核 RNA 和第二步剪接所需的四种蛋白质之间存在相互作用

DOI:
10.1128/mcb.12.11.5197-5205.1992
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发表时间:
1992
影响因子:
5.3
通讯作者:
C. Guthrie
C. Guthrie
中科院分区:
生物学2区
文献类型:
--
作者:
D. Frank;B. Patterson;C. Guthrie

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为了研究U5小核核糖核蛋白(SnRNP)在Pre-mRNA剪接中的功能,我们筛选了与酿酒酵母U5 SnRNA遗传相互作用的因素。我们分离了加剧U5 SnRNA条件等位基因表型的反式作用突变,并将这些基因命名为SLU,以与U5 SnRNA协同致死。SLU1和SLU2是剪接的第一个催化步骤所必需的,而SLU7和SLU4(PRP17的等位基因[U·Vijayradhavan,M.Company和J.Abelson,gene Dev.3:1206-1216,1989])仅为剪接的第二步所需。此外,slu4-1和slu7-1与PRP16和PRP18的突变结合在一起是致命的,这两个突变也在第二步发挥作用,但不包括第一步催化所需的因子突变,如Prp8和PRP4。根据这些数据,我们推测SLU4、SLU7、PRP18、PRP16和U5 SnRNA在功能上相互作用,U5 SnRNP的主要作用是协调完成第二步剪接催化步骤所需的一系列因素。
To investigate the function of the U5 small nuclear ribonucleoprotein (snRNP) in pre-mRNA splicing, we have screened for factors that genetically interact with Saccharomyces cerevisiae U5 snRNA. We isolated trans-acting mutations that exacerbate the phenotypes of conditional alleles of the U5 snRNA and named these genes SLU, for synergistically lethal with U5 snRNA. SLU1 and SLU2 are essential for the first catalytic step of splicing, while SLU7 and SLU4 (an allele of PRP17 [U. Vijayraghavan, M. Company, and J. Abelson, Genes Dev. 3:1206-1216, 1989]) are required only for the second step of splicing. Furthermore, slu4-1 and slu7-1 are lethal in combination with mutations in PRP16 and PRP18, which also function in the second step, but not with mutations in factors required for the first catalytic step, such as PRP8 and PRP4. We infer from these data that SLU4, SLU7, PRP18, PRP16, and the U5 snRNA interact functionally and that a major role of the U5 snRNP is to coordinate a set of factors that are required for the completion of the second catalytic step of splicing.
DOI: 10.1146/annurev.ge.21.120187.001355
发表时间: 1987
影响因子: 11.1
作者:
T. Huffaker;M. Hoyt;D. Botstein
通讯作者: T. Huffaker;M. Hoyt;D. Botstein
酵母中的前 mRNA 剪接。
DOI: 10.1016/0168-9525(91)90276-v
发表时间: 1991
期刊: Trends in genetics : TIG
影响因子: --
作者:
Ruby,SW;Abelson,J
通讯作者: Abelson,J
DOI: 10.1101/gad.1.9.1014
发表时间: 1987-11-01
影响因子: 10.5
作者:
CHENG, SC;ABELSON, J
通讯作者: ABELSON, J
酵母肌动蛋白突变的显性抑制因子相互抑制。
DOI: 10.1093/genetics/121.4.675
发表时间: 1989
期刊: Genetics
影响因子: 3.3
作者:
Adams,AE;Botstein,D
通讯作者: Botstein,D
DOI: --
发表时间: 1989-04
期刊: Genetics
影响因子: 3.3
作者:
P. Novick;B. Osmond;D. Botstein
通讯作者: P. Novick;B. Osmond;D. Botstein