Abstract
We have used the T7 expression system for expression ofE. coli FNR protein. Thefnr gene was cloned from its initiation codon ATG into theNdeI site of an expression vector and filamentous phage mGP1-2 was used as a donor of T7 RNA polymerase gene. The level of FNR expression attained by this expression arrangement was about 45% of total cell proteins.
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References
Cotter P.A., Gunsalus R.P.: Contribution of thefnr andarcA gene products in coordinate regulation of cytochromeo andd oxidase (cyo ABCDE andcyoAB) genes inEscherichia coli.FEMS Microbiol. Lett. 91, 31–36 (1992).
Maniatis T., Fritsch E.E., Sambrook J.:Molecular Cloning: A Laboratory Manual. Cold Spring Harbor. Laboratory, Cold Spring Harbor (NY) 1982.
Melville S., Gunsalus R.P.: Mutations in thefnr that alter anaerobic regulation of electron transport-associated genes inEscherichia coli.J. Biol. Chem. 265, 18733–18736 (1990).
Rosenberg A.H., Lade B.N., Chui D.-S., Lin S.-W., Dunn J.J., Studier F.W.: Vectors for selective expression of cloned DNAs by T7 RNA polymerase.Gene 56, 125–135 (1987).
Sharrocks A.D., Green J., Guest J.R.: FNR activates and represses transcriptionin vitro.Proc. Roy. Soc. London B245, 219–226 (1991).
Silhavy T.J., Berman M.L., Enquist L.W.:Experiments with Gene Fusions. Cold Spring Harbor Laboratory, Cold Spring Harbor (NY) 1984.
Spiro S., Guest J.R.: Regulation and over-expression of thefnr gene ofEscherichia coli.J. Gen. Microbiol. 133, 3279–3288 (1987).
Spiro S., Roberts R.E., Guest J.R.: FNR-dependent repression of thendh gene ofEscherichia coli and metal ion requirement for FNR-regulated gene expression.Mol. Microbiol. 3, 601–608 (1989).
Studier F.W., Rosenberg A.H., Dunn J.J., Dubendorff J.W.: Use of T7 RNA polymerase to direct expression of cloned genes.Methods Enzymol. 185, 60 (1990).
Tabor S., Richardson C.C.: A bacterial T7 RNA polymerase/promoter system for controlled exclusive expression of specific genes.Proc. Nat. Acad. Sci. USA 82, 1074–1078 (1985).
Trageser M., Spiro S., Duchene A., Kojro E., Fahrenholz F., Guest J.R., Unden G.: Isolation of intact FNR protein (M r 30 000) ofEscherichia coli.Mol. Microbiol. 4, 21–27 (1990).
Unden G., Duchene A.: Isolation and characterization of the Fnr protein, the transcriptional regulator of anaerobic electron transport inEscherichia coli.Eur. J. Biochem. 146, 193–199 (1987).
Unden G., Trageser M.: Oxygen regulated gene expression inEscherichia coli: control of aerobic respiration by the FNR protein.Antonie van Leeuwenhoek 59, 65–76 (1991).
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Stuchlík, S., Turňa, J. Overexpression of the FNR protein ofEscherichia coli with T7 expression system. Folia Microbiol 43, 601–604 (1998). https://doi.org/10.1007/BF02816375
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DOI: https://doi.org/10.1007/BF02816375