Energy-dependent cell cohesion in myxobacteria.
Cohesion in the myxobacterium Stigmatella aurantiaca was characterized. Two classes of cohesion were revealed, termed class A and class B. Class A cohesion is a characteristic of vegetative cells grown in tryptone or casitone (Difco Laboratories, Detroit, Mich.), whereas class B cohesion requires the addition of calcium ion for induction. Class A cohesion occurs in the presence of any cation and is temperature independent. Class B cohesion requires the presence of a cation in the calcium group and is energy dependent. We conclude that S. aurantiaca responds to calcium ion by synthesizing the molecular components of a system of cell cohesion (class B) and that the functioning of this system requires the expenditure of metabolic energy.
D002118:Calcium / Q000494:pharmacology; D002412:Cations; D002701:Chloramphenicol / Q000494:pharmacology; D004734:Energy Metabolism; D005033:Ethylmaleimide / Q000494:pharmacology; D008274:Magnesium / Q000494:pharmacology; D008628:Mercury / Q000494:pharmacology; D009231:Myxococcales / Q000166:cytology* / Q000187:drug effects / Q000502:physiology; D012293:Rifampin / Q000494:pharmacology
D002412:Cations; D002701:Chloramphenicol; D008628:Mercury; D008274:Magnesium; D005033:Ethylmaleimide; D002118:Calcium; D012293:Rifampin