BACTERIAL DONOR CELL USEFUL IN CONJUGATION

摘要

The present invention relates to a modified bacterial donor cell useful in conjugation, the cell containing i) a plasmid comprising a DNA construct encoding the polypeptide of interest, and at least one cis-acting DNA sequence required for the transfer of said plasmid by conjugation in the presence of a trans-acting mobilizing element, and ii) at least one DNA sequence encoding said trans-acting mobilizing element, wherein the donor cell has a reduced capacity, relative to a parent cell, of producing a bactericidal agent which kills or prevents growth in a population of recipient cells.