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Functional domains are semi-autonomous parts of proteins. The Per-Arnt-Sim (PAS) domain functions as signal-sensor in two-component systems of several bacteria. This domain exhibits large sequence diversity and is linked to other co-domains to modulate their function. In the present study, we analyzed the PAS domains found in the proteomes of several actinobacteria representing a variety of niches...
Photorhabdus temperata is a bioluminescent bacterium that lives in mutualistic association with entomopathogenic nematodes of the genus Heterorhabditis. The bacterium exists in two morphologically distinguishable phases (primary and secondary). The swimming behavior of P. temperata was investigated. Both the primary and secondary variants were able to swim in liquid or semisolid media under appropriate...
ω-Conotoxin, a calcium channel blocker, inhibits chemotaxis by Escherichia coli. To test whether ω-conotoxin acts at the cytoplasmic membrane, the kinetics of 125 I-ω-conotoxin binding was investigated. 125 I-ω-Conotoxin bound to Tris-EDTA-permeabilized cells or right-side-out membrane vesicles with saturation kinetics. Binding of 125 I-ω-conotoxin...
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