PMID:4916925

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Citation

Hazelbauer, GL, Mesibov, RE and Adler, J (1969) Escherichia coli mutants defective in chemotaxis toward specific chemicals. Proc. Natl. Acad. Sci. U.S.A. 64:1300-7

Abstract

Mutants of Escherichia coli K12 have been found which fail to carry out chemotaxis toward certain chemicals only. One mutant exhibits greatly reduced chemotaxis toward L-serine but has no detectable defect either in uptake or in oxidative metabolism of that compound. Another mutant is not attracted to D-galactose and certain related sugars. There is a correlation between the galactose chemotaxis defect and a defect in galactose uptake, perhaps indicating a common component for chemotaxis and uptake systems. The results are discussed in terms of a model for chemotaxis in which attractants are detected by specific "chemoreceptors."

Links

PubMed PMC223283

Keywords

Chemotaxis; Escherichia coli; Galactose/metabolism; Genetics, Microbial; Glucose/metabolism; Models, Biological; Mutation; Oxygen Consumption; Receptors, Drug; Ribose/metabolism; Serine/metabolism

Main Points of the Paper

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Materials and Methods Used

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Phenotype Annotations

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Phenotype of Taxon Information Genotype Information (if known) Condition Information OMP ID OMP Term Name ECO ID ECO Term Name Notes Status

a mutation or genetic difference within a strain

  • Taxon: Escherichia coli
  • Strain: Escherichia coli K-12
  • Substrain: AW518
  • NCBI Taxon ID: 83333
  • Genotype of Reference Strain: tsr+
  • Genotype of Experimental Strain : tsr-1
  • Reference Condition: semisolid tryptone agar, 35C
  • Experimental Condition: semisolid tryptone agar, 35C
OMP:0007041

decreased positive chemotaxis

ECO:0000182

in vitro culture assay evidence


Notes

References

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