منابع مشابه
Chemotaxis mutants of Spirochaeta aurantia.
Five Spirochaeta aurantia chemotaxis mutants were isolated. One mutant (the che-101 mutant) never reversed, one (the che-200 mutant) flexed predominantly, two (the che-300 and che-400-1 mutants) exhibited elevated reversal frequencies, and one (the che-400 mutant) exhibited chemotactically unstimulated behavior similar to that of the wild-type strain. The che-101 and che-400 mutants were essent...
متن کاملDefaecation behaviour of Argiope aurantia (Araneae: Araneidae)
We examined the defaecation behaviour of Argiope aurantia both in natural situations and in a greenhouse. The spiders defaecated more frequently at night than during the day. The nightly pattern of defaecation was not related to time of feeding. A. aurantia displayed at least two distinct behaviours related to defaecation, one of which involved leaving the web. These results are discussed in re...
متن کاملSpirochaeta aurantia has diacetyl chloramphenicol esterase activity.
The free-living spirochete Spirochaeta aurantia was nearly as susceptible to diacetyl chloramphenicol, the product of chloramphenicol acetyltransferase, as it was to chloramphenicol itself. This unexpected susceptibility to diacetyl chloramphenicol was wholly or partly the consequence of intrinsic carboxylesterase activity, as indicated by high-performance liquid chromatography, thin-layer chro...
متن کاملRelationship between proton motive force and motility in Spirochaeta aurantia.
The effects of various metabolic inhibitors on the motility of Spirochaeta aurantia were investigated. After 15 min in sodium arsenate buffer, 90% of cells remained motile even though adenosine triphosphate levels dropped from 5.6 to 0.1 nmol/mg (dry weight) of cells. After 70 min in sodium arsenate, 5% of cells were motile. Addition of phenazine methosulfate plus ascorbate at this time resulte...
متن کاملUptake of D-xylose and D-glucose by Spirochaeta aurantia.
Uptake of D-[14C]glucose and D-[14C]xylose by Spirochaeta aurantia was demonstrated to be osmotic shock sensitive and to require a high-energy phosphorylated compound rather than a proton motive force. These features are similar to those of binding protein-mediated transport systems in other gram-negative bacteria.
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ژورنال
عنوان ژورنال: Berichte der deutschen chemischen Gesellschaft
سال: 1876
ISSN: 0365-9496,1099-0682
DOI: 10.1002/cber.187600902146