Comprehensive in vivo RNA-binding site analyses reveal a role of Prp8 in spliceosomal assembly.
Comprehensive in vivo RNA-binding site analyses reveal a role of Prp8 in spliceosomal assembly.
复制标题
DOI:
10.1093/nar/gkt062
复制
发表时间:
2013-04-01
影响因子:
14.9
通讯作者:
Zhao R
中科院分区:
文献类型:
--
作者:
Li X;Zhang W;Xu T;Ramsey J;Zhang L;Hill R;Hansen KC;Hesselberth JR;Zhao R
Prp8 stands out among hundreds of splicing factors as a protein that is intimately involved in spliceosomal activation and the catalytic reaction. Here, we present the first comprehensive in vivo RNA footprints for Prp8 in budding yeast obtained using CLIP (cross-linking and immunoprecipitation)/CRAC (cross-linking and analyses of cDNAs) and next-generation DNA sequencing. These footprints encompass known direct Prp8-binding sites on U5, U6 snRNA and intron-containing pre-mRNAs identified using site-directed cross-linking with in vitro assembled small nuclear ribonucleoproteins (snRNPs) or spliceosome. Furthermore, our results revealed novel Prp8-binding sites on U1 and U2 snRNAs. We demonstrate that Prp8 directly cross-links with U2, U5 and U6 snRNAs and pre-mRNA in purified activated spliceosomes, placing Prp8 in position to bring the components of the active site together. In addition, disruption of the Prp8 and U1 snRNA interaction reduces tri-snRNP level in the spliceosome, suggesting a previously unknown role of Prp8 in spliceosomal assembly through its interaction with U1 snRNA.
登录
查看更多内容
影响因子:
64.8
作者:
Pomeranz Krummel, Daniel A;Oubridge, Chris;Leung, Adelaine K W;Li, Jade;Nagai, Kiyoshi
通讯作者:
Nagai, Kiyoshi
影响因子:
14.9
作者:
Christie, KR;Weng, S;Cherry, JM
通讯作者:
Cherry, JM
影响因子:
16.8
作者:
Ritchie, Dustin B.;Schellenberg, Matthew J.;MacMillan, Andrew M.
通讯作者:
MacMillan, Andrew M.
影响因子:
7
作者:
Lu, XN;Zhu, HN
通讯作者:
Zhu, HN
影响因子:
16
作者:
Fabrizio, Patrizia;Dannenberg, Julia;Luehrmann, Reinhard
通讯作者:
Luehrmann, Reinhard