Conjugative transfer of bacterial plasmids to recipient cells is often mediated by type IV secretion machinery. Experimental investigations into the minimal gene sets required for efficient conjugative transfer suggest that such gene sets are variable, depending on plasmids. We have been analyzing the conjugative transfer of -derived and IncP-9 plasmids, NAH7 and pWW0, whose conjugation systems belong to the MPF type.
View Article and Find Full Text PDFIn the present study, the correlation between surface chemical groups and the electrostatic properties of particulate materials was studied. Glass beads were modified to produce OH-, NH-, CN-, and F-functionalized materials. The materials were charged separately both by friction and by conventional corona charging, and the results were compared.
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