Expression, purification, and characterization of Pseudomonas aeruginosa SecA.


A secA gene from Pseudomonas aeruginosa PAO1 was amplified and expressed in Escherichia coli BL21.19 (secA13) under conditions where E. coli SecA was depleted. The binding of P. aeruginosa SecA (PaSecA) to the SP-Sepharose column was facilitated by ammonium sulfate fractionation but was not necessary for E. coli SecA (EcSecA) as the later bound more… (More)


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