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. 1984 Sep;159(3):991–999. doi: 10.1128/jb.159.3.991-999.1984

Gene sequence and predicted amino acid sequence of the motA protein, a membrane-associated protein required for flagellar rotation in Escherichia coli.

G E Dean, R M Macnab, J Stader, P Matsumura, C Burks
PMCID: PMC215758  PMID: 6090403

Abstract

The motA and motB gene products of Escherichia coli are integral membrane proteins necessary for flagellar rotation. We determined the DNA sequence of the region containing the motA gene and its promoter. Within this sequence, there is an open reading frame of 885 nucleotides, which with high probability (98% confidence level) meets criteria for a coding sequence. The 295-residue amino acid translation product had a molecular weight of 31,974, in good agreement with the value determined experimentally by gel electrophoresis. The amino acid sequence, which was quite hydrophobic, was subjected to a theoretical analysis designed to predict membrane-spanning alpha-helical segments of integral membrane proteins; four such hydrophobic helices were predicted by this treatment. Additional amphipathic helices may also be present. A remarkable feature of the sequence is the existence of two segments of high uncompensated charge density, one positive and the other negative. Possible organization of the protein in the membrane is discussed. Asymmetry in the amino acid composition of translated DNA sequences was used to distinguish between two possible initiation codons. The use of this method as a criterion for authentication of coding regions is described briefly in an Appendix.

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Selected References

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  1. Adhya S., Gottesman M. Control of transcription termination. Annu Rev Biochem. 1978;47:967–996. doi: 10.1146/annurev.bi.47.070178.004535. [DOI] [PubMed] [Google Scholar]
  2. Armstrong J. B., Adler J. Genetics of motility in Escherichia coli: complementation of paralysed mutants. Genetics. 1967 Jul;56(3):363–373. doi: 10.1093/genetics/56.3.363. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Barrantes F. J. The nicotinic cholinergic receptor : different compositions evidenced by statistical analysis. Biochem Biophys Res Commun. 1975 Jan 20;62(2):407–414. doi: 10.1016/s0006-291x(75)80153-7. [DOI] [PubMed] [Google Scholar]
  4. Baughman G., Nomura M. Localization of the target site for translational regulation of the L11 operon and direct evidence for translational coupling in Escherichia coli. Cell. 1983 Oct;34(3):979–988. doi: 10.1016/0092-8674(83)90555-x. [DOI] [PubMed] [Google Scholar]
  5. Block S. M., Berg H. C. Successive incorporation of force-generating units in the bacterial rotary motor. 1984 May 31-Jun 6Nature. 309(5967):470–472. doi: 10.1038/309470a0. [DOI] [PubMed] [Google Scholar]
  6. Boyd A., Krikos A., Simon M. Sensory transducers of E. coli are encoded by homologous genes. Cell. 1981 Nov;26(3 Pt 1):333–343. doi: 10.1016/0092-8674(81)90202-6. [DOI] [PubMed] [Google Scholar]
  7. Boyd A., Mandel G., Simon M. I. Integral membrane proteins required for bacterial motility and chemotaxis. Symp Soc Exp Biol. 1982;35:123–137. [PubMed] [Google Scholar]
  8. Clarke L., Carbon J. A colony bank containing synthetic Col El hybrid plasmids representative of the entire E. coli genome. Cell. 1976 Sep;9(1):91–99. doi: 10.1016/0092-8674(76)90055-6. [DOI] [PubMed] [Google Scholar]
  9. Clarke L., Carbon J. Biochemical construction and selection of hybrid plasmids containing specific segments of the Escherichia coli genome. Proc Natl Acad Sci U S A. 1975 Nov;72(11):4361–4365. doi: 10.1073/pnas.72.11.4361. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Clewell D. B. Nature of Col E 1 plasmid replication in Escherichia coli in the presence of the chloramphenicol. J Bacteriol. 1972 May;110(2):667–676. doi: 10.1128/jb.110.2.667-676.1972. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Collins A. L., Stocker B. A. Salmonella typhimurium mutants generally defective in chemotaxis. J Bacteriol. 1976 Dec;128(3):754–765. doi: 10.1128/jb.128.3.754-765.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. DePamphilis M. L., Adler J. Fine structure and isolation of the hook-basal body complex of flagella from Escherichia coli and Bacillus subtilis. J Bacteriol. 1971 Jan;105(1):384–395. doi: 10.1128/jb.105.1.384-395.1971. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Dean G. E., Aizawa S. I., Macnab R. M. flaAII (motC, cheV) of Salmonella typhimurium is a structural gene involved in energization and switching of the flagellar motor. J Bacteriol. 1983 Apr;154(1):84–91. doi: 10.1128/jb.154.1.84-91.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Dimmitt K., Simon M. Purification and thermal stability of intact Bacillus subtilis flagella. J Bacteriol. 1971 Jan;105(1):369–375. doi: 10.1128/jb.105.1.369-375.1971. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Engelman D. M., Steitz T. A. The spontaneous insertion of proteins into and across membranes: the helical hairpin hypothesis. Cell. 1981 Feb;23(2):411–422. doi: 10.1016/0092-8674(81)90136-7. [DOI] [PubMed] [Google Scholar]
  16. Enomoto M. Genetic Studies of Paralyzed Mutants in Salmonella. II. Mapping of Three mot Loci by Linkage Analysis. Genetics. 1966 Nov;54(5):1069–1076. doi: 10.1093/genetics/54.5.1069. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Enomoto M. Genetic studies of paralyzed mutant in Salmonella. I. Genetic fine structure of the mot loci in Salmonella typhimurium. Genetics. 1966 Sep;54(3):715–726. doi: 10.1093/genetics/54.3.715. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Fickett J. W. Recognition of protein coding regions in DNA sequences. Nucleic Acids Res. 1982 Sep 11;10(17):5303–5318. doi: 10.1093/nar/10.17.5303. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Guy H. R. A structural model of the acetylcholine receptor channel based on partition energy and helix packing calculations. Biophys J. 1984 Jan;45(1):249–261. doi: 10.1016/S0006-3495(84)84152-1. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Higgins C. F., Ames G. F. Regulatory regions of two transport operons under nitrogen control: nucleotide sequences. Proc Natl Acad Sci U S A. 1982 Feb;79(4):1083–1087. doi: 10.1073/pnas.79.4.1083. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Higgins C. F., Haag P. D., Nikaido K., Ardeshir F., Garcia G., Ames G. F. Complete nucleotide sequence and identification of membrane components of the histidine transport operon of S. typhimurium. Nature. 1982 Aug 19;298(5876):723–727. doi: 10.1038/298723a0. [DOI] [PubMed] [Google Scholar]
  22. Ho Y. S., Wulff D. L., Rosenberg M. Bacteriophage lambda protein cII binds promoters on the opposite face of the DNA helix from RNA polymerase. Nature. 1983 Aug 25;304(5928):703–708. doi: 10.1038/304703a0. [DOI] [PubMed] [Google Scholar]
  23. Ikemura T. Correlation between the abundance of Escherichia coli transfer RNAs and the occurrence of the respective codons in its protein genes: a proposal for a synonymous codon choice that is optimal for the E. coli translational system. J Mol Biol. 1981 Sep 25;151(3):389–409. doi: 10.1016/0022-2836(81)90003-6. [DOI] [PubMed] [Google Scholar]
  24. Komeda Y. Fusions of flagellar operons to lactose genes on a mu lac bacteriophage. J Bacteriol. 1982 Apr;150(1):16–26. doi: 10.1128/jb.150.1.16-26.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Komeda Y., Kutsukake K., Iino T. Definition of additional flagellar genes in Escherichia coli K12. Genetics. 1980 Feb;94(2):277–290. doi: 10.1093/genetics/94.2.277. [DOI] [PMC free article] [PubMed] [Google Scholar]
  26. Komeda Y., Silverman M., Matsumura P., Simon M. Genes for the hook-basal body proteins of the flagellar apparatus in Escherichia coli. J Bacteriol. 1978 May;134(2):655–667. doi: 10.1128/jb.134.2.655-667.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Kozak M. Comparison of initiation of protein synthesis in procaryotes, eucaryotes, and organelles. Microbiol Rev. 1983 Mar;47(1):1–45. doi: 10.1128/mr.47.1.1-45.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  28. Krikos A., Mutoh N., Boyd A., Simon M. I. Sensory transducers of E. coli are composed of discrete structural and functional domains. Cell. 1983 Jun;33(2):615–622. doi: 10.1016/0092-8674(83)90442-7. [DOI] [PubMed] [Google Scholar]
  29. Kyte J., Doolittle R. F. A simple method for displaying the hydropathic character of a protein. J Mol Biol. 1982 May 5;157(1):105–132. doi: 10.1016/0022-2836(82)90515-0. [DOI] [PubMed] [Google Scholar]
  30. Macnab R. M., Aizawa S. Bacterial motility and the bacterial flagellar motor. Annu Rev Biophys Bioeng. 1984;13:51–83. doi: 10.1146/annurev.bb.13.060184.000411. [DOI] [PubMed] [Google Scholar]
  31. Matsumura P., Silverman M., Simon M. Synthesis of mot and che gene products of Escherichia coli programmed by hybrid ColE1 plasmids in minicells. J Bacteriol. 1977 Dec;132(3):996–1002. doi: 10.1128/jb.132.3.996-1002.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
  32. 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]
  33. Michaelis S., Beckwith J. Mechanism of incorporation of cell envelope proteins in Escherichia coli. Annu Rev Microbiol. 1982;36:435–465. doi: 10.1146/annurev.mi.36.100182.002251. [DOI] [PubMed] [Google Scholar]
  34. Oppenheim D. S., Yanofsky C. Translational coupling during expression of the tryptophan operon of Escherichia coli. Genetics. 1980 Aug;95(4):785–795. doi: 10.1093/genetics/95.4.785. [DOI] [PMC free article] [PubMed] [Google Scholar]
  35. Parkinson J. S. Complementation analysis and deletion mapping of Escherichia coli mutants defective in chemotaxis. J Bacteriol. 1978 Jul;135(1):45–53. doi: 10.1128/jb.135.1.45-53.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  36. Parkinson J. S., Parker S. R., Talbert P. B., Houts S. E. Interactions between chemotaxis genes and flagellar genes in Escherichia coli. J Bacteriol. 1983 Jul;155(1):265–274. doi: 10.1128/jb.155.1.265-274.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  37. Parkinson J. S., Revello P. T. Sensory adaptation mutants of E. coli. Cell. 1978 Dec;15(4):1221–1230. doi: 10.1016/0092-8674(78)90048-x. [DOI] [PubMed] [Google Scholar]
  38. Ridgway H. G., Silverman M., Simon M. I. Localization of proteins controlling motility and chemotaxis in Escherichia coli. J Bacteriol. 1977 Nov;132(2):657–665. doi: 10.1128/jb.132.2.657-665.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
  39. Rubik B. A., Koshland D. E., Jr Potentiation, desensitization, and inversion of response in bacterial sensing of chemical stimuli. Proc Natl Acad Sci U S A. 1978 Jun;75(6):2820–2824. doi: 10.1073/pnas.75.6.2820. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Sanger F., Nicklen S., Coulson A. R. DNA sequencing with chain-terminating inhibitors. Proc Natl Acad Sci U S A. 1977 Dec;74(12):5463–5467. doi: 10.1073/pnas.74.12.5463. [DOI] [PMC free article] [PubMed] [Google Scholar]
  41. Schümperli D., McKenney K., Sobieski D. A., Rosenberg M. Translational coupling at an intercistronic boundary of the Escherichia coli galactose operon. Cell. 1982 Oct;30(3):865–871. doi: 10.1016/0092-8674(82)90291-4. [DOI] [PubMed] [Google Scholar]
  42. 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]
  43. Silverman M., Matsumura P., Simon M. The identification of the mot gene product with Escherichia coli-lambda hybrids. Proc Natl Acad Sci U S A. 1976 Sep;73(9):3126–3130. doi: 10.1073/pnas.73.9.3126. [DOI] [PMC free article] [PubMed] [Google Scholar]
  44. Silverman M., Simon M. Characterization of Escherichia coli flagellar mutants that are insensitive to catabolite repression. J Bacteriol. 1974 Dec;120(3):1196–1203. doi: 10.1128/jb.120.3.1196-1203.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. Silverman M., Simon M. Operon controlling motility and chemotoxis in E. coli. Nature. 1976 Dec 9;264(5586):577–580. doi: 10.1038/264577a0. [DOI] [PubMed] [Google Scholar]
  46. Silverman M., Simon M. Positioning flagellar genes in Escherichia coli by deletion analysis. J Bacteriol. 1974 Jan;117(1):73–79. doi: 10.1128/jb.117.1.73-79.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  47. Spudich J. A., Horn V., Yanofsky C. On the production of deletions in the chromosome of Escherichia coli. J Mol Biol. 1970 Oct 14;53(1):49–67. doi: 10.1016/0022-2836(70)90045-8. [DOI] [PubMed] [Google Scholar]
  48. Stormo G. D., Schneider T. D., Gold L., Ehrenfeucht A. Use of the 'Perceptron' algorithm to distinguish translational initiation sites in E. coli. Nucleic Acids Res. 1982 May 11;10(9):2997–3011. doi: 10.1093/nar/10.9.2997. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. Suzuki T., Komeda Y. Incomplete flagellar structures in Escherichia coli mutants. J Bacteriol. 1981 Feb;145(2):1036–1041. doi: 10.1128/jb.145.2.1036-1041.1981. [DOI] [PMC free article] [PubMed] [Google Scholar]
  50. Szekely E., Simon M. DNA sequence adjacent to flagellar genes and evolution of flagellar-phase variation. J Bacteriol. 1983 Jul;155(1):74–81. doi: 10.1128/jb.155.1.74-81.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
  51. Wang E. A., Mowry K. L., Clegg D. O., Koshland D. E., Jr Tandem duplication and multiple functions of a receptor gene in bacterial chemotaxis. J Biol Chem. 1982 May 10;257(9):4673–4676. [PubMed] [Google Scholar]
  52. Yamaguchi S., Iino T., Horiguchi T., Ota K. Genetic analysis of fla and mot cistrons closely linked to H1 in Salmonella abortusequi and its derivatives. J Gen Microbiol. 1972 Apr;70(1):59–75. doi: 10.1099/00221287-70-1-59. [DOI] [PubMed] [Google Scholar]

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