Activation of the CheA kinase by asparagine in Bacillus subtillis chemotaxis

Article Abstract:

A study was conducted on the Bacillus subtilis to determine how its chemotaxis is affected by asparagine. Results have shown that membranes containing CheA and methyl-accepting chemotaxis protein double the rate of CheY-P formation in the presence of asparagine. Moreover, several chemotaxis proteins affect the regulation of CheA activity whether or not an attractant is present when membranes from a number of Bacillus subtilis null mutant strains were used.

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Diversity in chemotaxis mechanisms among the bacteria and archae

Article Abstract:

Chemotaxis describes the cellular processes that control the movement of organisms toward favorable environments. It is found that the E.coli system is streamlined and lacks or has significantly modified some basic features of the primordial mechanism that existed when the bacteria and archaea separated during evolution.

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A receptor-modifying deamidase in complex with a signaling phosphatase reveals reciprocal regulation

Article Abstract:

The structure of a complex between the signal terminating phosphatase, CheC, and the receptor-modifying deamidase, CheD, is discussed. CheC inhibits CheD by mimicking receptor substrates and CheC phosphatase activity is stimulated by CheD.

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