The N terminus of the HasA protein and the SecB chaperone cooperate in the efficient targeting and secretion of HasA via the ATP-binding cassette transporter.

Abstract excerpt

Secretion of the HasA hemophore is mediated by a C-terminal secretion signal as part of an ATP-binding cassette (ABC) pathway in the Gram-negative bacterium Serratia marcescens. We reconstituted the HasA secretion pathway in Escherichia coli. In E. coli, this pathway required three specific secretion functions and SecB, the general chaperone of the Sec pathway that recognizes HasA. The secretion of the isolated...

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