Abstract
A detailed physical and genetic map of a previously cloned 5.5-kilobase segment of Treponema pallidum DNA is described. This segment expressed two proteins that are cell membrane associated in Escherichia coli. The structural genes of these treponemal membrane proteins, tmpA and tmpB, are coordinately expressed, and transcription in E. coli can start from at least two different treponemal promoters. The tmpA and tmpB proteins are the products of in vivo proteolytic cleavage from precursor proteins which are 2 and 4 kilodaltons larger, respectively, than the mature proteins. Because the sizes of the corresponding proteins produced in T. pallidum were identical to those of the mature membrane proteins in E. coli, we concluded that a similar proteolytic processing takes place in both E. coli and T. pallidum. Although tmpA and tmpB were controlled by the same transcription signals, tmpB was expressed to a higher extent than tmpA, and only the tmpB product could be overproduced by placing the left lambda promoter in front of the structural genes. The nucleotide sequence of the T. pallidum tmpA gene was established. This is the first T. pallidum gene sequenced. Codon usage and the nature of transcriptional and translational signals are discussed. The deduced amino acid sequence indicated the presence of a sequence that was characteristic for a signal peptide. This sequence information allowed the construction of hybrid genes coding for proteins having beta-galactosidase enzyme activity as well as TmpA epitopes. The enzyme-linked antigen was expressed at a high level in E. coli when transcriptional and translational signals from coliphage lambda were used. In this case the protein produced was a sandwich protein consisting of 21 amino acids of the lambda cro protein, 204 amino acids of the T. pallidum TmpA protein, and 1,020 amino acids of the E. coli lambda-galactosidase. The potential use of this enzyme-linked antigen for the serodiagnosis of syphilis is discussed.
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Selected References
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- Burnette W. N. "Western blotting": electrophoretic transfer of proteins from sodium dodecyl sulfate--polyacrylamide gels to unmodified nitrocellulose and radiographic detection with antibody and radioiodinated protein A. Anal Biochem. 1981 Apr;112(2):195–203. doi: 10.1016/0003-2697(81)90281-5. [DOI] [PubMed] [Google Scholar]
- Casadaban M. J., Cohen S. N. Analysis of gene control signals by DNA fusion and cloning in Escherichia coli. J Mol Biol. 1980 Apr;138(2):179–207. doi: 10.1016/0022-2836(80)90283-1. [DOI] [PubMed] [Google Scholar]
- Chou P. Y., Fasman G. D. Prediction of protein conformation. Biochemistry. 1974 Jan 15;13(2):222–245. doi: 10.1021/bi00699a002. [DOI] [PubMed] [Google Scholar]
- Collins J., Brüning H. J. Plasmids useable as gene-cloning vectors in an in vitro packaging by coliphage lambda: "cosmids". Gene. 1978 Oct;4(2):85–107. doi: 10.1016/0378-1119(78)90023-9. [DOI] [PubMed] [Google Scholar]
- Dayhoff M. O., Barker W. C., Hunt L. T. Establishing homologies in protein sequences. Methods Enzymol. 1983;91:524–545. doi: 10.1016/s0076-6879(83)91049-2. [DOI] [PubMed] [Google Scholar]
- Frischauf A. M., Garoff H., Lehrach H. A subcloning strategy for DNA sequence analysis. Nucleic Acids Res. 1980 Dec 11;8(23):5541–5549. doi: 10.1093/nar/8.23.5541. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Grantham R., Gautier C., Gouy M. Codon frequencies in 119 individual genes confirm consistent choices of degenerate bases according to genome type. Nucleic Acids Res. 1980 May 10;8(9):1893–1912. doi: 10.1093/nar/8.9.1893. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hall M. N., Silhavy T. J. Genetic analysis of the major outer membrane proteins of Escherichia coli. Annu Rev Genet. 1981;15:91–142. doi: 10.1146/annurev.ge.15.120181.000515. [DOI] [PubMed] [Google Scholar]
- Hopp T. P., Woods K. R. Prediction of protein antigenic determinants from amino acid sequences. Proc Natl Acad Sci U S A. 1981 Jun;78(6):3824–3828. doi: 10.1073/pnas.78.6.3824. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kalnins A., Otto K., Rüther U., Müller-Hill B. Sequence of the lacZ gene of Escherichia coli. EMBO J. 1983;2(4):593–597. doi: 10.1002/j.1460-2075.1983.tb01468.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Koenen M., Rüther U., Müller-Hill B. Immunoenzymatic detection of expressed gene fragments cloned in the lac Z gene of E. coli. EMBO J. 1982;1(4):509–512. doi: 10.1002/j.1460-2075.1982.tb01199.x. [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]
- 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]
- Mooi F. R., Harms N., Bakker D., de Graaf F. K. Organization and expression of genes involved in the production of the K88ab antigen. Infect Immun. 1981 Jun;32(3):1155–1163. doi: 10.1128/iai.32.3.1155-1163.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Norgard M. V., Miller J. N. Cloning and expression of Treponema pallidum (Nichols) antigen genes in Escherichia coli. Infect Immun. 1983 Nov;42(2):435–445. doi: 10.1128/iai.42.2.435-445.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Pribnow D. Nucleotide sequence of an RNA polymerase binding site at an early T7 promoter. Proc Natl Acad Sci U S A. 1975 Mar;72(3):784–788. doi: 10.1073/pnas.72.3.784. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Remaut E., Stanssens P., Fiers W. Plasmid vectors for high-efficiency expression controlled by the PL promoter of coliphage lambda. Gene. 1981 Oct;15(1):81–93. doi: 10.1016/0378-1119(81)90106-2. [DOI] [PubMed] [Google Scholar]
- Roozen K. J., Fenwick R. G., Jr, Curtiss R., 3rd Synthesis of ribonucleic acid and protein in plasmid-containing minicells of Escherichia coli K-12. J Bacteriol. 1971 Jul;107(1):21–33. doi: 10.1128/jb.107.1.21-33.1971. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rosenberg M., Court D. Regulatory sequences involved in the promotion and termination of RNA transcription. Annu Rev Genet. 1979;13:319–353. doi: 10.1146/annurev.ge.13.120179.001535. [DOI] [PubMed] [Google Scholar]
- Sanger F., Coulson A. R., Hong G. F., Hill D. F., Petersen G. B. Nucleotide sequence of bacteriophage lambda DNA. J Mol Biol. 1982 Dec 25;162(4):729–773. doi: 10.1016/0022-2836(82)90546-0. [DOI] [PubMed] [Google Scholar]
- Shine J., Dalgarno L. The 3'-terminal sequence of Escherichia coli 16S ribosomal RNA: complementarity to nonsense triplets and ribosome binding sites. Proc Natl Acad Sci U S A. 1974 Apr;71(4):1342–1346. doi: 10.1073/pnas.71.4.1342. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Stamm L. V., Folds J. D., Bassford P. J., Jr Expression of Treponema pallidum antigens in Escherichia coli K-12. Infect Immun. 1982 Jun;36(3):1238–1241. doi: 10.1128/iai.36.3.1238-1241.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sutcliffe J. G. Complete nucleotide sequence of the Escherichia coli plasmid pBR322. Cold Spring Harb Symp Quant Biol. 1979;43(Pt 1):77–90. doi: 10.1101/sqb.1979.043.01.013. [DOI] [PubMed] [Google Scholar]
- Walfield A. M., Hanff P. A., Lovett M. A. Expression of Treponema pallidum antigens in Escherichia coli. Science. 1982 Apr 30;216(4545):522–523. doi: 10.1126/science.7041257. [DOI] [PubMed] [Google Scholar]
- Watson M. E. Compilation of published signal sequences. Nucleic Acids Res. 1984 Jul 11;12(13):5145–5164. doi: 10.1093/nar/12.13.5145. [DOI] [PMC free article] [PubMed] [Google Scholar]
- van Embden J. D., van der Donk H. J., van Eijk R. V., van der Heide H. G., de Jong J. A., van Olderen M. F., Osterhaus A. B., Schouls L. M. Molecular cloning and expression of Treponema pallidum DNA in Escherichia coli K-12. Infect Immun. 1983 Oct;42(1):187–196. doi: 10.1128/iai.42.1.187-196.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
- von Heijne G. Patterns of amino acids near signal-sequence cleavage sites. Eur J Biochem. 1983 Jun 1;133(1):17–21. doi: 10.1111/j.1432-1033.1983.tb07424.x. [DOI] [PubMed] [Google Scholar]
- von Meyenburg K., Jørgensen B. B., Nielsen J., Hansen F. G. Promoters of the atp operon coding for the membrane-bound ATP synthase of Escherichia coli mapped by Tn10 insertion mutations. Mol Gen Genet. 1982;188(2):240–248. doi: 10.1007/BF00332682. [DOI] [PubMed] [Google Scholar]