Summary
The dedB gene of Escherichia coli has sequence similarity to the zfpA gene of the chloroplast chromosome. The functions of dedB and zfpA are unknown. We constructed derivatives of temperature-sensitive polA strains into whose chromosomes a plasmid containing the disrupted dedB gene was integrated by homologous recombination. These strains contained normal and disrupted dedB genes in their chromosomes. We then selected plasmid-segregated strains and found no cells containing the disrupted dedB gene, indicating that disruption of the dedB gene was lethal in polA strains of E. coli.
Similar content being viewed by others
References
Ausubel FM, Brent R, Kingston RE, Moore DD, Seidman JG, Smith JG, Struhl K (1987) Preparation of genomic DNA from bacteria. Current protocols in molecular biology (vol 2). John Wiley and Sons, New York: 2.4.1
Bognar AL, Osborne C, Shane B (1987) Primary structure of the Escherichia coli folC gene and its folylpolyglutamate synthetase-dihydrofolate synthetase product and regulation of expression by an upstream gene. J Biol Chem 262:12337–12343
Bognar A, Pyne C, Yu M, Basi G (1989) Transcription of the folC gene encoding folylpolyglutamate synthetase-dihydrofolate synthetase in Escherichia coli. J Bacteriol 171:1854–1861
Dower WJ, Miller JF, Ragsdale CW (1988) High efficiency transformation of E. coli by high voltage electroporation. Nucleic Acids Res 16:6127–6145
Gay NJ (1984) Construction and characterization of an Escherichia coli strain with a uncI mutation. J Bacteriol 158:820–825
Gutterson NI, Koshland DE Jr (1983) Replacement and amplification of bacterial genes with sequences altered in vitro. Proc Natl Acad Sci USA 80:4894–4898
Hiratsuka J, Shimada H, Whittier R, Ishibashi T, Sakamoto M, Mori M, Kondo C, Honji Y, Sun C-R, Meng B-Y, Li Y-Q, Kanno A, Nishizawa Y, Hirai A, Shinozaki K, Sugiura M (1989) The complete sequence of the rice (Oryza sativa) chloroplast genome: intermolecular recombination between distinct tRNA genes accounts for a major plastid DNA inversion during the evolution of the cereals. Mol Gen Genet 217:185–194
Hong J-S, Ames BN (1971) Localized mutagenesis of any specific small region of the bacterial chromosome. Proc Natl Acad Sci USA 68:3158–3162
Joyce CM, Grindley NDF (1984) Method for determining whether a gene of Escherichia coli is essential: application to the polA gene. J Bacteriol 158:636–643
Monk M, Kinross J (1972) Conditional lethality of recA and recB derivatives of a strain of Escherichia coli K-12 with a temperature-sensitive deoxyribonucleic acid polymerase I. J Bacteriol 109:971–978
Murray MG, Thompson WF (1980) Rapid isolation of high molecular weight plant DNA. Nucleic Acids Res 8:4321–4325
Nonet ML, Marvel CC, Tolan DR (1987) The hisT-purF region of the Escherichia coli K-12 chromosome. J Biol Chem 262:12209–12217
Ohyama K, Fukuzawa H, Kohchi T, Shirai H, Sano T, Sano S, Umesono K, Shiki Y, Takeuchi M, Chang Z, Aota S, Inokuchi H, Ozeki H (1986) Chloroplast gene organization deduced from complete sequence of liverwort Marchantia polymorpha chloroplast DNA. Nature 322:572–574
Russell CB, Thaler DS, Dahlquist FW (1989) Chromosomal transformation of Escherichia coli recD strains with linearized plasmids. J Bacteriol 171:2609–2613
Sambrook J, Fritsch EF, Maniatis T (1989) Molecular cloning: A laboratory manual. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY
Sasaki Y, Yoshida K, Takimoto A (1988) Action spectra for photogene expression in etiolated pea seedlings. FEBS Lett 239:199–202
Sasaki Y, Nagano Y, Morioka S, Ishikawa H, Matsuno R (1989) A chloroplast gene encoding a protein with one zinc finger. Nucleic Acids Res 17:6217–6227
Shinozaki K, Ohme M, Tanaka M, Wakasugi T, Hayashida N, Matsubayashi T, Zaita N, Chunwongse J, Obokata J, Yamaguchi-Shinozaki K, Ohto C, Torazawa K, Meng B-Y, Sugita M, Deno H, Kamogashira T, Yamada K, Kusuda J, Takaiwa F, Kato A, Tohdoh N, Shimada H, Sugiura M (1986) The complete nucleotide sequence of the tobacco chloroplast genome: its gene organization and expression. EMBO J 5:2043–2049
Stahl FW, Kobayashi I, Thaler D, Stahl MM (1986) Direction of travel of RecBC recombinase through bacteriophage lamda DNA. Genetics 113:215–227
Toy J, Bognar AL (1990) Cloning and expression of the gene encoding Lactobacillus casei folylpoly-γ-glutamate synthetase in Escherichia coli and determination of its primary structure. J Biol Chem 265:2492–2499
Author information
Authors and Affiliations
Additional information
Communicated by K. Isono
Rights and permissions
About this article
Cite this article
Nagano, Y., Matsuno, R. & Sasaki, Y. An essential gene of Escherichia coli that has sequence similarity to a chloroplast gene of unknown function. Molec. Gen. Genet. 228, 62–64 (1991). https://doi.org/10.1007/BF00282448
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00282448