title: Emulsion based selection of T7 promoters of varying activity.
abstract: The ability to build and control complex biological systems is greatly enhanced by the generation of related parts with varying strengths. In this way, various parts can be strung together and the connectivity and expression levels can be matched for the desired system performance. Engineered gene circuits, both in vivo and in vitro, often utilize the T7 RNA polymerase in tandem with the T7 promoter for transcription. In this work, we describe the selection of T7 promoter variants of varying strength by emulsifying in vitro transcription with subsequent fluorescence activated cell sorting (FACS) to enrich for active promoters. Such variant promoters should be of use to synthetic biologists for both in vivo and in vitro applications.
authors.affiliation: Institute for Cell and Molecular Biology, University of Texas at Austin, 1 University Station A4800, Austin, Texas 78712, United States.
authors.forename: Eric A
authors.initials: EA
authors.lastname: Davidson
authors.forename: Thomas
authors.initials: T
authors.lastname: VAN Blarcom
authors.forename: Matthew
authors.initials: M
authors.lastname: Levy
authors.forename: Andrew D
authors.initials: AD
authors.lastname: Ellington
mesh_terms: D017123:Bacteriophage T7 / Q000201:enzymology / Q000235:genetics*; D001483:Base Sequence; D019295:Computational Biology; D004279:DNA, Viral / Q000235:genetics; D012321:DNA-Directed RNA Polymerases / Q000235:genetics; D004655:Emulsions; D005434:Flow Cytometry; D053263:Gene Regulatory Networks; D008969:Molecular Sequence Data; D011401:Promoter Regions, Genetic; D012641:Selection, Genetic; D058615:Synthetic Biology; D013698:Templates, Genetic; D014764:Viral Proteins / Q000235:genetics
chemical_list: D004279:DNA, Viral; D004655:Emulsions; D014764:Viral Proteins; C062210:bacteriophage T7 RNA polymerase; D012321:DNA-Directed RNA Polymerases