A conformational switch in PRP8 mediates metal ion coordination that promotes pre-mRNA exon ligation.
A conformational switch in PRP8 mediates metal ion coordination that promotes pre-mRNA exon ligation.
复制标题
PRP8中的构象开关介导了促进前MRNA外显子连接的金属离子配位。
DOI:
10.1038/nsmb.2556
复制
发表时间:
2013-06
影响因子:
16.8
通讯作者:
MacMillan, Andrew M.
中科院分区:
文献类型:
--
作者:
Schellenberg, Matthew J.;Wu, Tao;Ritchie, Dustin B.;Fica, Sebastian;Staley, Jonathan P.;Atta, Karim A.;LaPointe, Paul;MacMillan, Andrew M.
Splicing of pre-mRNAs in eukaryotes is catalyzed by the spliceosome a large RNA–protein metalloenzyme. The catalytic center of the spliceosome involves a structure comprised of the U2 and U6 snRNAs and includes a metal bound by U6 snRNA. The precise architecture of the splicesome active site however, including the question of whether it includes protein components, remains unresolved. A wealth of evidence places the protein PRP8 at the heart of the spliceosome through assembly and catalysis. Here we provide evidence that the RNase H domain of PRP8 undergoes a conformational switch between the two steps of splicing rationalizing yeast prp8 alleles promoting either the first or second step. We also show that this switch unmasks a metal-binding site involved in the second step. Together these data establish that PRP8 is a metalloprotein that promotes exon ligation within the spliceosome.
登录
查看更多内容
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
4.5
作者:
Gordon, PM;Sontheimer, EJ;Piccirilli, JA
通讯作者:
Piccirilli, JA
影响因子:
16.8
作者:
Garcin, Elsa D.;Hosfield, David J.;Tainer, John A.
通讯作者:
Tainer, John A.
影响因子:
64.5
作者:
MADHANI, HD;GUTHRIE, C
通讯作者:
GUTHRIE, C
影响因子:
64.8
作者:
Nakamura, Teruya;Zhao, Ye;Yamagata, Yuriko;Hua, Yue-Jin;Yang, Wei
通讯作者:
Yang, Wei