The differential interaction of snRNPs with pre-mRNA reveals splicing kinetics in living cells.
The differential interaction of snRNPs with pre-mRNA reveals splicing kinetics in living cells.
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DOI:
10.1083/jcb.201004030
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发表时间:
2010-10-04
期刊:
影响因子:
--
通讯作者:
Stanek D
中科院分区:
文献类型:
--
作者:
Huranová M;Ivani I;Benda A;Poser I;Brody Y;Hof M;Shav-Tal Y;Neugebauer KM;Stanek D
GFP-tagged snRNP components reveal the dynamics and rate for spliceosome assembly in vivo. Precursor messenger RNA (pre-mRNA) splicing is catalyzed by the spliceosome, a large ribonucleoprotein (RNP) complex composed of five small nuclear RNP particles (snRNPs) and additional proteins. Using live cell imaging of GFP-tagged snRNP components expressed at endogenous levels, we examined how the spliceosome assembles in vivo. A comprehensive analysis of snRNP dynamics in the cell nucleus enabled us to determine snRNP diffusion throughout the nucleoplasm as well as the interaction rates of individual snRNPs with pre-mRNA. Core components of the spliceosome, U2 and U5 snRNPs, associated with pre-mRNA for 15–30 s, indicating that splicing is accomplished within this time period. Additionally, binding of U1 and U4/U6 snRNPs with pre-mRNA occurred within seconds, indicating that the interaction of individual snRNPs with pre-mRNA is distinct. These results are consistent with the predictions of the step-wise model of spliceosome assembly and provide an estimate on the rate of splicing in human cells.
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DOI:
10.1083/jcb.200601105
发表时间:
2006-04-24
期刊:
The Journal of cell biology
影响因子:
--
作者:
Darzacq X;Kittur N;Roy S;Shav-Tal Y;Singer RH;Meier UT
通讯作者:
Meier UT
影响因子:
4.5
作者:
Behzadnia, Nastaran;Hartmuth, Klaus;Luehrmann, Reinhard
通讯作者:
Luehrmann, Reinhard
DOI:
10.1073/pnas.85.15.5459
发表时间:
1988-08-01
影响因子:
11.1
作者:
KONARSKA, MM;SHARP, PA
通讯作者:
SHARP, PA
影响因子:
16
作者:
Görnemann, J;Kotovic, KM;Neugebauer, KM
通讯作者:
Neugebauer, KM
影响因子:
64.5
作者:
KONARSKA, MM;SHARP, PA
通讯作者:
SHARP, PA