https://www.selleckchem.com/TGF-beta.html
Conjugative pili are important in mediating bacterial conjugation and horizontal gene transfer. Since plasmid transfer can include antibiotic-resistance genes, conjugation is an important mechanism in the spread of antibiotic resistance. Filamentous bacteriophages have been shown to exist in two different structural classes those with a 5-fold rotational symmetry and those with a one-start helix with approximately 5 subunits per turn. Structures for the F and the F-like pED208 conjugation pilus have shown that they have 5-fold rotational symmet
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