Flashcards in Mechanisms of Bacterial Gene transfer Deck (5)
What are the three means by which bacteria can transfer plasmids to other bacteria?
What is transposon?
-a small genetic element capable of mediating their own movement from one chromosomal (or plasmid) location to another
-compound transposons carry accessory genes, such as antibiotic resistance genes
What is bacterial conjugation?
-cell-to-cell contact and formation of a a conjugation bridge via a sex pilus
-conjugative plasmid in donor (male) encodes sex pili to initiate cell-cell contact
-transferred DNA cannot be maintained as an atonomous plasmid, so homologous recombination is required
What is bacterial transformation
-DNA binds to and enters the cell surface. then integrates into host chromosome via homologous recombination