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. Author manuscript; available in PMC: 2011 Apr 1.
Published in final edited form as: Curr Opin Microbiol. 2010 Jan 29;13(2):204–209. doi: 10.1016/j.mib.2010.01.002

Figure 1.

Figure 1

(A) Schematic of the Pta-AckA pathway. CoASH, coenzyme A; acCoA, acetyl-CoA; Pi, inorganic phosphate; Pta, phosphotransacetylase; acP, acetyl phosphate; AckA, acetate kinase. (B) Schematic of a two-component pathway in which the response regulator (RR) possesses two distinct sources for its phosphoryl group: its cognate sensor kinase (SK) and acP. Note that some SKs also can function as RR phospho-aspartyl phosphatases, removing the phosphoryl group from the phosphorylated form of their cognate RR, and leading to formation of the unphosphorylated RR and Pi.