Polyadenylation of a functional mRNA controls gene expression in Escherichia coli.
Polyadenylation of a functional mRNA controls gene expression in Escherichia coli.
复制标题
DOI:
10.1093/nar/gkm120
复制
发表时间:
2007
影响因子:
14.9
通讯作者:
Hajnsdorf E
中科院分区:
文献类型:
--
作者:
Joanny G;Le Derout J;Bréchemier-Baey D;Labas V;Vinh J;Régnier P;Hajnsdorf E
Although usually implicated in the stabilization of mRNAs in eukaryotes, polyadenylation was initially shown to destabilize RNA in bacteria. All the data are consistent with polyadenylation being part of a quality control process targeting folded RNA fragments and non-functional RNA molecules to degradation. We report here an example in Escherichia coli, where polyadenylation directly controls the level of expression of a gene by modulating the stability of a functional transcript. Inactivation of poly(A)polymerase I causes overexpression of glucosamine–6-phosphate synthase (GlmS) and both the accumulation and stabilization of the glmS transcript. Moreover, we show that the glmS mRNA results from the processing of the glmU-glmS cotranscript by RNase E. Interestingly, the glmU-glmS cotranscript and the mRNA fragment encoding GlmU only slightly accumulated in the absence of poly(A)polymerase, suggesting that the endonucleolytically generated glmS mRNA harbouring a 5′ monophosphate and a 3′ stable hairpin is highly susceptible to poly(A)-dependent degradation.
登录
查看更多内容
影响因子:
2.9
作者:
BADET, B;VERMOOTE, P;LEGOFFIC, F
通讯作者:
LEGOFFIC, F
影响因子:
11.4
作者:
Braun, F;Le Derout, J;Régnier, P
通讯作者:
Régnier, P
影响因子:
64.8
作者:
BOUVET, P;BELASCO, JG
通讯作者:
BELASCO, JG
影响因子:
2.8
作者:
Hambraeus, G;Karhumaa, K;Rutberg, B
通讯作者:
Rutberg, B
DOI:
10.1073/pnas.89.16.7546
发表时间:
1992-08-15
影响因子:
11.1
作者:
CAO, GJ;SARKAR, N
通讯作者:
SARKAR, N