Regulatory consequences of gene translocation in bacteria.
Regulatory consequences of gene translocation in bacteria.
复制标题
细菌基因易位的调控后果。
DOI:
10.1093/nar/gks694
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发表时间:
2012-10
影响因子:
14.9
通讯作者:
Lim HN
中科院分区:
文献类型:
--
作者:
Block DH;Hussein R;Liang LW;Lim HN
Gene translocations play an important role in the plasticity and evolution of bacterial genomes. In this study, we investigated the impact on gene regulation of three genome organizational features that can be altered by translocations: (i) chromosome position; (ii) gene orientation; and (iii) the distance between a target gene and its transcription factor gene (‘target-TF distance’). Specifically, we quantified the effect of these features on constitutive expression, transcription factor binding and/or gene expression noise using a synthetic network in Escherichia coli composed of a transcription factor (LacI repressor) and its target gene (yfp). Here we show that gene regulation is generally robust to changes in chromosome position, gene orientation and target-TF distance. The only demonstrable effect was that chromosome position alters constitutive expression, due to changes in gene copy number and local sequence effects, and that this determines maximum and minimum expression levels. The results were incorporated into a mathematical model which was used to quantitatively predict the responses of a simple gene network to gene translocations; the predictions were confirmed experimentally. In summary, gene translocation can modulate constitutive gene expression levels due to changes in chromosome position but it has minimal impact on other facets of gene regulation.
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影响因子:
4.3
作者:
Allen, Timothy E;Price, Nathan D;Joyce, Andrew R;Palsson, Bernhard O
通讯作者:
Palsson, Bernhard O
影响因子:
3.2
作者:
Bohn, C;Bouloc, P
通讯作者:
Bouloc, P
影响因子:
30.8
作者:
Becskei, A;Kaufmann, BB;van Oudenaarden, A
通讯作者:
van Oudenaarden, A
影响因子:
2.9
作者:
BUTLER, AP;REVZIN, A;VONHIPPEL, PH
通讯作者:
VONHIPPEL, PH
DOI:
10.1126/science.1161427
发表时间:
2008-10-17
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Choi PJ;Cai L;Frieda K;Xie XS
通讯作者:
Xie XS