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Isolation and expression of a cDNA encoding Renilla reniformis luciferase
W W Lorenz1, R O McCann, M Longiaru
1Department of Biochemistry, University of Georgia, Athens 30602.
Summary
Researchers isolated and characterized the luciferase gene from the bioluminescent organism Renilla reniformis. The recombinant luciferase produced in E. coli matched the native enzyme, confirming successful gene isolation and characterization for bioluminescence studies.
Area of Science:
- Biochemistry
- Molecular Biology
- Marine Biology
Background:
- Renilla reniformis, a bioluminescent anthozoan coelenterate, utilizes a luciferase enzyme for light emission.
- Bioluminescence involves the oxidation of coelenterazine by luciferase, with energy transfer to green fluorescent protein in vivo for green light, or direct blue light emission in vitro.
Purpose of the Study:
- To isolate and characterize the luciferase cDNA and its gene product from Renilla reniformis.
- To confirm the identity and function of the recombinant luciferase expressed in a heterologous system.
Main Methods:
- Construction of a Renilla reniformis cDNA library in lambda gt11.
- Screening of the library using plaque hybridization with specific oligonucleotide probes.
- Expression of the isolated luciferase cDNA in Escherichia coli and characterization of the recombinant protein.
Main Results:
- Successful isolation and characterization of a luciferase cDNA from Renilla reniformis.
- The recombinant luciferase expressed in E. coli exhibited identical properties to the native luciferase.
- Characterization included SDS/PAGE, immunoblot analysis, and assessment of bioluminescence emission characteristics.
Conclusions:
- The study successfully isolated the gene encoding Renilla reniformis luciferase.
- The recombinant luciferase produced in E. coli is functionally and structurally equivalent to the native enzyme.
- This provides a valuable tool for further research into bioluminescence mechanisms and applications.