Among many PDF inhibitors, actinonin is a good natural PDF inhibitor and has certain antibacterial activity in vitro but no activity in vivo for the fraction of bioavailability.

• 在众多PDF抑制剂中，放线菌素是天然的强PDF抑制剂，具有一定的体外抑菌活性但由于其生物利用度差而没有体内活性。