title: The development and characterization of an exogenous green-light-regulated gene expression system in marine cyanobacteria.
abstract: A green-light-regulated gene expression system derived from Synechocystis sp. PCC 6803 was constructed and introduced into the marine cyanobacterial strain Synechococcus sp. NKBG 15041c. The regulation system was evaluated using gfp uv as a reporter gene under red-light illumination and under simultaneous red- and green-light illumination. Expression of the reporter gene was effectively repressed under red-light illumination and increased over 10-fold by illuminating with green light. Control vectors missing either the ccaS sensor histidine kinase gene or the ccaR response regulator gene showed no detectable induction of GFPuv expression. Green-light induction of gfp uv expression was further confirmed by quantitative reverse transcription PCR. The constructed system was effective at regulating the recombinant expression of a target gene using green light in a marine cyanobacterial strain that does not naturally possess such a green-light regulation system. Thus, constructed green-light-regulated gene expression system may be used as a core platform technology for the development of marine cyanobacterial strains in which bioprocesses will be regulated by light.
authors: Department of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo, 184-8588, Japan.
authors: Amr
authors: A
authors: Badary
authors: Koichi
authors: K
authors: Abe
authors: Stefano
authors: S
authors: Ferri
authors: Katsuhiro
authors: K
authors: Kojima
authors: Koji
authors: K
authors: Sode
mesh_terms: D059001:Aquatic Organisms; D001426:Bacterial Proteins / Q000235:genetics* / Q000378:metabolism; D003001:Cloning, Molecular; D015964:Gene Expression Regulation, Bacterial / Q000528:radiation effects*; D017930:Genes, Reporter; D005818:Genetic Engineering; D005822:Genetic Vectors / Q000737:chemistry / Q000378:metabolism; D049452:Green Fluorescent Proteins / Q000235:genetics / Q000378:metabolism; D000071677:Histidine Kinase; D008027:Light; D011401:Promoter Regions, Genetic; D011494:Protein Kinases / Q000235:genetics* / Q000378:metabolism; D060888:Real-Time Polymerase Chain Reaction; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism; D046940:Synechococcus / Q000235:genetics / Q000378:metabolism / Q000528:radiation effects*; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism; D014158:Transcription, Genetic / Q000528:radiation effects*
chemical_list: D001426:Bacterial Proteins; D011994:Recombinant Proteins; D014157:Transcription Factors; D049452:Green Fluorescent Proteins; D011494:Protein Kinases; D000071677:Histidine Kinase
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