Activation by Gene Amplification of pitB, Encoding a Third Phosphate Transporter of Escherichia coli K-12

AUTOR(ES)
FONTE

American Society for Microbiology

RESUMO

Two systems for the uptake of inorganic phosphate (Pi) in Escherichia coli, PitA and Pst, have been described. A revertant of a pitA pstS double mutant that could grow on Pi was isolated. We demonstrate that the expression of a new Pi transporter, PitB, is activated in this strain by a gene amplification event.

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