Fusion reporter gene for bacterial luciferase
First Claim
1. A recombinant DNA encoding a fusion protein having bacterial luciferase activity comprising operable linked in the 5'"'"' to 3'"'"' direction, the coding region of the luxA gene, a DNA linker, and the luxB gene, wherein the coding region of the luxA and the luxB genes are isolated from Vibrio harveyi and the DNA linker consists essentially of TCTAGA.
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Abstract
Novel fusion reporter genes, fusion reporter proteins, and an improved reporter system for measuring the relative activity of a promoter sequence. A luxAB fusion gene of the present invention is particularly useful as a reporter gene and is derived from the fusion of a luxA gene and a luxB gene from Vibrio harveyi. The gene products of the luxA and luxB genes are the α- and β-subunits, respectively, of a bacterial luciferase. A fusion protein encoded by a luxAB fusion gene is a single active protein and is particularly useful as a reporter protein having luciferase activity. An advantage of such a reporter system to assay gene expression in many cells which contain FMNH2, such as bacterial and yeast cells, is that an immediate and quantitative assessment of gene expression may be made from real-time light measurements using intact cells.
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Citations
24 Claims
- 1. A recombinant DNA encoding a fusion protein having bacterial luciferase activity comprising operable linked in the 5'"'"' to 3'"'"' direction, the coding region of the luxA gene, a DNA linker, and the luxB gene, wherein the coding region of the luxA and the luxB genes are isolated from Vibrio harveyi and the DNA linker consists essentially of TCTAGA.
- 2. A fusion reporter gene that is luxAB.
- 5. A plasmid vector that is pIT20.
- 6. A plasmid vector that is pIT24.
- 7. A plasmid vector that is pIT21.
- 8. A plasmid vector that is pGAR117.
- 9. A plasmid vector that is pSV2lux.
- 10. A plasmid vector that is pIT22.
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18. A transformant that is E. coli K12 JA221/pIT20 (NRRL B-18301).
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19. A transformant that is E. coli K12 JA221/pIT24.
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20. A transformant that is Sacchraromyces cerevisiae DBY746/pIT21.
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21. A transformant that is Nicotiana plubmaginifolia/pGAR117.
Specification