ISSN:
1432-072X
Keywords:
Sulfate assimilation
;
Regulation of sulfate assimilation
;
Sulfonolipids
;
Gliding bacteria
;
Cytophaga johnsonae
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract We have studied the regulation of sulfate assimilation by the gliding bacterium Cytophaga johnsonae in which 20% of the total sulfur is in the sulfornate moiety of sulfonolipid. Added cystine inhibited sulfate uptake and growth with cystine as sulfur source resulted in a repression of sulfate uptake. However, low concentrations of cystine preferentially repressed the terminal reactions of sulfate assimilation responsible for cysteine synthesis while allowing the transport and activation of sulfate for sulfonolipid synthesis. The significance of this novel pattern of regulation in bacteria is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00425178
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