The nature of the energy source for phosphate transport was studied in strains of Escherichia coli in which either one of the two major systems (PIT, PST) for phosphate transport was present. In the PIT system, phosphate transport is coupled to the proton-motive force. The energy source for the PST system appears to be phosphate-bond energy, as has been found in other systems involving binding proteins. High concentration gradients of phosphate (between 100 and 500) are established by both systems.
Research Article|January 15 1979
Energy coupling to the transport of inorganic phosphate in Escherichia coli K12
Biochem J (1979) 178 (1): 133-137.
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H Rosenberg, R G Gerdes, F M Harold; Energy coupling to the transport of inorganic phosphate in Escherichia coli K12. Biochem J 15 January 1979; 178 (1): 133–137. doi: https://doi.org/10.1042/bj1780133
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