Initiating nucleotide identity determines efficiency of RNA synthesis from 6S RNA templates in Bacillus subtilis but not Escherichia coli.
Initiating nucleotide identity determines efficiency of RNA synthesis from 6S RNA templates in Bacillus subtilis but not Escherichia coli.
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DOI:
10.1093/nar/gkt517
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发表时间:
2013-08
影响因子:
14.9
通讯作者:
Wassarman KM
中科院分区:
文献类型:
--
作者:
Cabrera-Ostertag IJ;Cavanagh AT;Wassarman KM
The 6S RNA is a non-coding small RNA that binds within the active site of housekeeping forms of RNA polymerases (e.g. Eσ70 in Escherichia coli, EσA in Bacillus subtilis) and regulates transcription. Efficient release of RNA polymerase from 6S RNA regulation during outgrowth from stationary phase is dependent on use of 6S RNA as a template to generate a product RNA (pRNA). Interestingly, B. subtilis has two 6S RNAs, 6S-1 and 6S-2, but only 6S-1 RNA appears to be used efficiently as a template for pRNA synthesis during outgrowth. Here, we demonstrate that the identity of the initiating nucleotide is particularly important for the B. subtilis RNA polymerase to use RNA templates. Specifically, initiation with guanosine triphosphate (GTP) is required for efficient pRNA synthesis, providing mechanistic insight into why 6S-2 RNA does not support robust pRNA synthesis as it initiates with adenosine triphosphate (ATP). Intriguingly, E. coli RNA polymerase does not have a strong preference for initiating nucleotide identity. These observations highlight an important difference in biochemical properties of B. subtilis and E. coli RNA polymerases, specifically in their ability to use RNA templates efficiently, which also may reflect the differences in GTP and ATP metabolism in these two organisms.
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影响因子:
4.1
作者:
Beckmann, Benedikt M.;Burenina, Olga Y.;Hartmann, Roland K.
通讯作者:
Hartmann, Roland K.
DOI:
10.1007/bf00729452
发表时间:
1982-01-01
期刊:
MOLECULAR AND GENERAL GENETICS
影响因子:
--
作者:
MORAN, CP;LANG, N;LOSICK, R
通讯作者:
LOSICK, R
影响因子:
3.2
作者:
LOPEZ, JM;DROMERICK, A;FREESE, E
通讯作者:
FREESE, E
影响因子:
14.9
作者:
Irnov I;Sharma CM;Vogel J;Winkler WC
通讯作者:
Winkler WC
影响因子:
14.9
作者:
Gildehaus N;Neusser T;Wurm R;Wagner R
通讯作者:
Wagner R