Summary
TherimL gene ofEscherichia coli K12 encodes en enzyme catalyzing the acetylation of the N-terminal serine of ribosomal protein L12, thereby converting it into L7. Using a mutant strain defective in this acetylation reaction, we cloned therimL gene into cosmid pHC79 and characterized it at the molecular level. From analysis by SDS-polyacrylamide gel electrophoresis of the proteins synthesized in maxi-cells containing derivatives of therimL-harboring plasmid into which transposon λδ had been inserted at various sites, the product of this gene was identified as a protein with an apparent molecular weight of 20.3 kDa. The nucleotide sequence of the gene and the amino acid sequence deduced from the nucleotide sequence were compared with those of two other ribosomal protein acetylses encoded by therimI andrimJ genes (Yoshikawa et al. 1987). A considerable degree of overall similarity was seen betweenrimL andrimJ, but the degree of similarity betweenrimL andrimI was very low. In addition, a short stretch of similar amino acid sequence was found in all threerim acetylases. The significance of these results with respect to other acetylating enzymes, in particular those involved in the acetylation of aminoglycoside antibiotics is discussed.
Similar content being viewed by others
References
Bachmann BJ (1987) Linkage map ofEscherichia coli K-12, edition 7. In: Neidhardt FC, Ingraham JL, Low KB, Magasanik B, Schaechter M, Umbarger HE (eds)Escherichia coli andSalmonella typhimurium. American Society for Microbiology, Washington, DC, pp 807–876.
Bolivar F, Rodriguez RL, Greene PJ, Betlack MC, Heynecker HL, Boyer JH, Crosa JH, Falkow S (1977) Construction and characterization of new cloning vehicles, II. A multipurpose cloning system. Gene 2:95–101
Cumberlidge AG, Isono K (1979) Ribosomal protein modification inEscherichia coli, I. A mutant lacking the N-terminal acetylation of protein S5 exhibits thermosensitivity. J Mol Biol 131:169–189
Ferreti JJ, Gilmore KS, Courvalin P (1986) Nucleotide sequence analysis of the gene specifying the bifunctional 6′-aminoglycoside acetyltransferase 2″-aminoglycoside phosphotransferase enzyme inStreptococcus faecalis and identification and cloning of gene regions specifying the two activities. J Bacteriol 167:631–638
Hohn B, Collins J (1980) A small cosmid for efficient cloning of large DNA fragments. Gene 11:291–298
Isono K (1984) A computer program package for storing and retrieving DNA/RNA and protein sequence data. Nucleic Acids Res 12:101–112
Isono K, Isono S (1980) Ribosomal protein modification inEscherichia coli. II Studies of a mutant lacking the N-terminal acetylation of protein S18. Mol Gen Genet 177:645–651
Isono S, Isono K (1981) Ribosomal protein modification inEscherichia coli, III. Studies of mutants lacking an acetylase activity specific for protein L12. Mol Gen Genet 183:473–477.
Kitakawa M, Dabbs ER, Isono K (1979) Genes coding for ribosomal proteins S15, L21, and L27 map nearargG inEscherichia coli. J Bacteriol 138:832–838
Kohara Y, Akiyama K, Isono K (1987) The physical map of the wholeE. coli chromosome: Application of a new strategy for rapid analysis and sorting of a large genomic library. Cell 50:495–508
Lake JA (1985) Evolving ribosome structure: Domains in Archaebacteria, Eubacteria, Eocytes and Eukaryotes. Annu Rev Biochem 54:507–530
Leslie AGW, Moody PCE, Shaw WV (1988) Structure of chloramphenicol acetyltransferase at 1.75-Å resolution. Proc Natl Acad Sci USA 85:4133–4137
Maniatis T, Fritsch EF, Sambrook J (1982) Molecular cloning. A laboratory manual. Cold Spring Harbor Laboratory, New York
Mizusawa S, Nishimura S, Seela F (1986) Improvement of the dideoxy chain termination method of DNA sequencing by use of deoxy-7-deazaguanosine triphosphate in place of dGTP. Nucleic Acids Res 14:1319–1324
Piepersberg W, Distler J, Heinzel P (1988) Antibiotic resistance by modification: Many resistance genes could be derived from cellar control genes in Actinomycetes. Actinomycetologica, in press
Ramagopal S, Subramanian AR (1974) Alteration in the acetylation level of ribosomal protein L12 during growth cycle ofEscherichia coli. Proc Natl Acad Sci USA 71:2136–2140
Sancar A, Hack AM, Rupp WD (1979) Simple method for identification of plasmid-coded proteins. J Bacteriol 137:692–693
Sanger F, Nicklen S, Coulson AR (1977) DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci USA 74:5463–5467
Yanisch-Perron C, Vieira J, Messing J (1985) Improved M13 phage cloning vectors and host strains: Nucleotide sequences of the M13 mp18 and pUC19 vectors. Gene 33:103–119
Yoshikawa A, Isono S, Sheback A, Isono K (1987) Cloning and nucleotide sequencing of the genesrimI andrimJ which encode enzymes acetylating ribosomal proteins S18 and S5 ofEscherichia coli K12. Mol Gen Genet 209:481–488
Author information
Authors and Affiliations
Additional information
Communicated by J. Lengeler
Rights and permissions
About this article
Cite this article
Tanka, S., Matsushita, Y., Yoshikawa, A. et al. Cloning and molecular characterization of the generimL wich encodes an enzyme acetylating ribosomal protein L12 ofEscherichia coki K12. Molec. Gen. Genet. 217, 289–293 (1989). https://doi.org/10.1007/BF02464895
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02464895