Three Mutations in Escherichia coli That Generate Transformable Functional Flagella

Three mutations in Escherichia coli that generate transformable functional flagella.

Hydrodynamics predicts that swimming bacteria generate a propulsion force when a helical flagellum rotates because rotating helices necessarily translate at a low Reynolds number. It is generally believed that the flagella of motile bacteria are semirigid helices with a fixed pitch determined by hydrodynamic principles. Here, we report the characterization of three mutations in laboratory strai...

Three mutations in Escherichia coli that generate 1 transformable functional flagella

Functional motifs in Escherichia coli NC101

Escherichia coli (E. coli) bacteria can damage DNA of the gut lining cells and may encourage the development of colon cancer according to recent reports. Genetic switches are specific sequence motifs and many of them are drug targets. It is interesting to know motifs and their location in sequences. At the present study, Gibbs sampler algorithm was used in order to predict and find functional m...

Flagella of Escherichia coli spheroplasts.

Recently, Z. Vaituzis and R. N. Doetsch (J. Bacteriol. 89:1586, 1965) described the relationship between flagellation and motility in penicillin-induced spheroplasts of Salmonella typhimurium, and they concluded that the formation of flagella was dependent upon prior cell wall synthesis. This conclusion has now been confirmed with Escherichia coli (ATCC 13070), the results found being identical...

Mutations in Escherichia coli that effect sensitivity to oxygen.

Fifteen oxygen-sensitive (Oxys) mutants of Escherichia coli were isolated after exposure to UV light. The mutants did not form macroscopic colonies when plated aerobically. They did form macroscopic colonies anaerobically. Oxygen, introduced during log phase, inhibited the growth of liquid cultures. The degree of inhibition was used to separate the mutants into three classes. Class I mutants di...