Chromosome position effects on gene expression in Escherichia coli K-12.
Chromosome position effects on gene expression in Escherichia coli K-12.
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DOI:
10.1093/nar/gku828
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发表时间:
2014-10
影响因子:
14.9
通讯作者:
Lee DJ
中科院分区:
文献类型:
--
作者:
Bryant JA;Sellars LE;Busby SJ;Lee DJ
In eukaryotes, the location of a gene on the chromosome is known to affect its expression, but such position effects are poorly understood in bacteria. Here, using Escherichia coli K-12, we demonstrate that expression of a reporter gene cassette, comprised of the model E. coli lac promoter driving expression of gfp, varies by ∼300-fold depending on its precise position on the chromosome. At some positions, expression was more than 3-fold higher than at the natural lac promoter locus, whereas at several other locations, the reporter cassette was completely silenced: effectively overriding local lac promoter control. These effects were not due to differences in gene copy number, caused by partially replicated genomes. Rather, the differences in gene expression occur predominantly at the level of transcription and are mediated by several different features that are involved in chromosome organization. Taken together, our findings identify a tier of gene regulation above local promoter control and highlight the importance of chromosome position effects on gene expression profiles in bacteria.
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影响因子:
14.9
作者:
Block DH;Hussein R;Liang LW;Lim HN
通讯作者:
Lim HN
影响因子:
3.2
作者:
Corcoran, Colin P.;Cameron, Andrew D. S.;Dorman, Charles J.
通讯作者:
Dorman, Charles J.
影响因子:
64.8
作者:
Guelen, Lars;Pagie, Ludo;van Steensel, Bas
通讯作者:
van Steensel, Bas
DOI:
10.1016/0304-4165(71)90053-5
发表时间:
1971-01-01
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
BURSTEIN, C;KEPES, A
通讯作者:
KEPES, A
影响因子:
14.9
作者:
Keseler IM;Mackie A;Peralta-Gil M;Santos-Zavaleta A;Gama-Castro S;Bonavides-Martínez C;Fulcher C;Huerta AM;Kothari A;Krummenacker M;Latendresse M;Muñiz-Rascado L;Ong Q;Paley S;Schröder I;Shearer AG;Subhraveti P;Travers M;Weerasinghe D;Weiss V;Collado-Vides J;Gunsalus RP;Paulsen I;Karp PD
通讯作者:
Karp PD