Abstract
The selC gene from E. coli codes for a tRNA species (tRNA(UCASer] which is aminoacylated with L-serine and which cotranslationally inserts selenocysteine into selenoproteins. By means of Southern hybridization it was demonstrated that this gene occurs in all enterobacteria tested. To assess whether the unique primary and secondary structural features of the E. coli selC gene product are conserved in that of other organisms, the selC homologue from Proteus vulgaris was cloned and sequenced. It was found that the Proteus selC gene differs from the E. coli counterpart in only six nucleotides, that it displays the same unique properties and that it is expressed and functions in E. coli. This indicates that the unique mechanism of selenocysteine incorporation is not restricted to E. coli but has been conserved as a uniform biochemical process.
Full text
PDFImages in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Buckel P., Piepersberg W., Böck A. Suppression of temperature-sensitive aminoacyl-tRNA synthetase mutations by ribosomal mutations: a possible mechanism. Mol Gen Genet. 1976 Nov 24;149(1):51–61. doi: 10.1007/BF00275960. [DOI] [PubMed] [Google Scholar]
- Böck A., Stadtman T. C. Selenocysteine, a highly specific component of certain enzymes, is incorporated by a UGA-directed co-translational mechanism. Biofactors. 1988 Oct;1(3):245–250. [PubMed] [Google Scholar]
- Casadaban M. J., Cohen S. N. Lactose genes fused to exogenous promoters in one step using a Mu-lac bacteriophage: in vivo probe for transcriptional control sequences. Proc Natl Acad Sci U S A. 1979 Sep;76(9):4530–4533. doi: 10.1073/pnas.76.9.4530. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Cox J. C., Edwards E. S., DeMoss J. A. Resolution of distinct selenium-containing formate dehydrogenases from Escherichia coli. J Bacteriol. 1981 Mar;145(3):1317–1324. doi: 10.1128/jb.145.3.1317-1324.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Csonka L. N. Proline over-production results in enhanced osmotolerance in Salmonella typhimurium. Mol Gen Genet. 1981;182(1):82–86. doi: 10.1007/BF00422771. [DOI] [PubMed] [Google Scholar]
- Grosjean H., Nicoghosian K., Haumont E., Söll D., Cedergren R. Nucleotide sequences of two serine tRNAs with a GGA anticodon: the structure-function relationships in the serine family of E. coli tRNAs. Nucleic Acids Res. 1985 Aug 12;13(15):5697–5706. doi: 10.1093/nar/13.15.5697. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Haddock B. A., Mandrand-Berthelot M. A. Escherichia coli formate-to-nitrate respiratory chain: genetic analysis. Biochem Soc Trans. 1982 Dec;10(6):478–480. doi: 10.1042/bst0100478. [DOI] [PubMed] [Google Scholar]
- Hatfield D., Diamond A., Dudock B. Opal suppressor serine tRNAs from bovine liver form phosphoseryl-tRNA. Proc Natl Acad Sci U S A. 1982 Oct;79(20):6215–6219. doi: 10.1073/pnas.79.20.6215. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Laemmli U. K. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature. 1970 Aug 15;227(5259):680–685. doi: 10.1038/227680a0. [DOI] [PubMed] [Google Scholar]
- Leinfelder W., Forchhammer K., Zinoni F., Sawers G., Mandrand-Berthelot M. A., Böck A. Escherichia coli genes whose products are involved in selenium metabolism. J Bacteriol. 1988 Feb;170(2):540–546. doi: 10.1128/jb.170.2.540-546.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Leinfelder W., Zehelein E., Mandrand-Berthelot M. A., Böck A. Gene for a novel tRNA species that accepts L-serine and cotranslationally inserts selenocysteine. Nature. 1988 Feb 25;331(6158):723–725. doi: 10.1038/331723a0. [DOI] [PubMed] [Google Scholar]
- Maxam A. M., Gilbert W. Sequencing end-labeled DNA with base-specific chemical cleavages. Methods Enzymol. 1980;65(1):499–560. doi: 10.1016/s0076-6879(80)65059-9. [DOI] [PubMed] [Google Scholar]
- Norrander J., Kempe T., Messing J. Construction of improved M13 vectors using oligodeoxynucleotide-directed mutagenesis. Gene. 1983 Dec;26(1):101–106. doi: 10.1016/0378-1119(83)90040-9. [DOI] [PubMed] [Google Scholar]
- PINSENT J. The need for selenite and molybdate in the formation of formic dehydrogenase by members of the coli-aerogenes group of bacteria. Biochem J. 1954 May;57(1):10–16. doi: 10.1042/bj0570010. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rogers M. J., Söll D. Discrimination between glutaminyl-tRNA synthetase and seryl-tRNA synthetase involves nucleotides in the acceptor helix of tRNA. Proc Natl Acad Sci U S A. 1988 Sep;85(18):6627–6631. doi: 10.1073/pnas.85.18.6627. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sprinzl M., Hartmann T., Meissner F., Moll J., Vorderwülbecke T. Compilation of tRNA sequences and sequences of tRNA genes. Nucleic Acids Res. 1987;15 (Suppl):r53–188. doi: 10.1093/nar/15.suppl.r53. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Vogelstein B., Gillespie D. Preparative and analytical purification of DNA from agarose. Proc Natl Acad Sci U S A. 1979 Feb;76(2):615–619. doi: 10.1073/pnas.76.2.615. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Zinoni F., Birkmann A., Leinfelder W., Böck A. Cotranslational insertion of selenocysteine into formate dehydrogenase from Escherichia coli directed by a UGA codon. Proc Natl Acad Sci U S A. 1987 May;84(10):3156–3160. doi: 10.1073/pnas.84.10.3156. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Zinoni F., Birkmann A., Stadtman T. C., Böck A. Nucleotide sequence and expression of the selenocysteine-containing polypeptide of formate dehydrogenase (formate-hydrogen-lyase-linked) from Escherichia coli. Proc Natl Acad Sci U S A. 1986 Jul;83(13):4650–4654. doi: 10.1073/pnas.83.13.4650. [DOI] [PMC free article] [PubMed] [Google Scholar]