ISSN:
1432-072X
Keywords:
Chemotaxis
;
Motility
;
Velocity
;
Methionine starvation
;
Bacillus subtilis 60015
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Constant levels of amino acids enhanced the velocity of Bacillus subtilis 60015 cells about 2-fold and stimulated the response in motility assays. The stimulation of velocity did not occur via the receptors for chemotaxis. Cysteine and methionine, general inhibitors of chemotaxis, both completely inhibited the smooth response in a temporal gradient of attractant. After methionine starvation B. subtilis 60015 showed no measurable response in a temporal gradient of attractant, this in contrast to the effect observed with some other bacteria. Addition of methionine to starved cells restored the response toward attractant. Revertants of B. subtilis 60015 for methionine requirement could not be starved and showed a normal behavior toward temporal gradients of attractant.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00428596
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