Abstract:
:Signaling photoreceptors mediate diverse organismal adaptations in response to light. As light-gated protein switches, signaling photoreceptors provide the basis for optogenetics, a term that refers to the control of organismal physiology and behavior by light. We establish as novel optogenetic tools the plasmids pDusk and pDawn, which employ blue-light photoreceptors to confer light-repressed or light-induced gene expression in Escherichia coli with up to 460-fold induction upon illumination. Key features of these systems are low background activity, high dynamic range, spatial control on the 20-μm scale, independence from exogenous factors, and ease of use. In optogenetic experiments, pDusk and pDawn can be used to specifically perturb individual nodes of signaling networks and interrogate their role. On the preparative scale, pDawn can induce by light the production of recombinant proteins and thus represents a cost-effective and readily automated alternative to conventional induction systems.
journal_name
J Mol Bioljournal_title
Journal of molecular biologyauthors
Ohlendorf R,Vidavski RR,Eldar A,Moffat K,Möglich Adoi
10.1016/j.jmb.2012.01.001subject
Has Abstractpub_date
2012-03-02 00:00:00pages
534-42issue
4eissn
0022-2836issn
1089-8638pii
S0022-2836(12)00011-3journal_volume
416pub_type
杂志文章abstract::A novel gene from the nematode Caenorhabditis elegans was isolated by hybridization with a human calmodulin complementary DNA probe. This gene, cal-1, is present at one copy per haploid genome. In-situ hybridization of the cloned gene to metaphase chromosomes allowed us to assign it to the nematode linkage group IV. T...
journal_title:Journal of molecular biology
pub_type: 杂志文章
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abstract::In common with many other eukaryotic species, the genomes of species in the genus Allium contain a high proportion of repeated DNA sequences, which may be implicated in the considerable differences in genome size that are seen between even very closely related species. The gross organization of repetitive sequences wi...
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
pub_type: 杂志文章,评审
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
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更新日期:2013-03-25 00:00:00
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journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2000.3836
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journal_title:Journal of molecular biology
pub_type: 杂志文章
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更新日期:2020-02-14 00:00:00
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2004.01.024
更新日期:2004-03-12 00:00:00
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journal_title:Journal of molecular biology
pub_type: 杂志文章
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
pub_type: 杂志文章
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journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
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