Independence of proline chemotaxis and transport in Bacillus subtilis

G. W. Ordal, D. P. Villani, R. A. Nicholas, F. G. Hamel

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13 Scopus citations


Values of K(I) for nine proline analogs as inhibitors of proline chemotaxis and of proline transport were determined. Two of them inhibited transport at substantially lower concentrations than chemotaxis; two at substantially higher concentrations. Moreover, mutants, believed to be in the component that binds proline, were isolated that showed a shift of K(M) for transport to higher concentrations, one as much as 40-fold. However, chemotaxis was virtually unaffected. Therefore, unlike galactose chemotaxis and transport in Escherichia coli, which share the galactose-binding protein proline chemotaxis and transport in B. subtilis are independent.

Original languageEnglish (US)
Pages (from-to)4916-4919
Number of pages4
JournalJournal of Biological Chemistry
Issue number14
StatePublished - Dec 1 1978


ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Ordal, G. W., Villani, D. P., Nicholas, R. A., & Hamel, F. G. (1978). Independence of proline chemotaxis and transport in Bacillus subtilis. Journal of Biological Chemistry, 253(14), 4916-4919.