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A novel antimicrobial peptide MP1106 was designed based on the parental peptide plectasin with four mutational sites and a high level of expression in Pichia pastoris X-33 via the pPICZαA plasmid was achieved. The concentration of total secreted protein in the fermented supernatant was 2.134 g/l (29 °C), and the concentration of recombinant MP1106 (rMP1106) reached 1,808 mg/l after a 120-h induction...
The tri-hybrid peptide-LHP7 has the potent activity against Gram-positive and Gram-negative as well as fungi, but its mechanism of action has remained elusive. The effluences of LHP7 on the Staphylococcus aureus cell membrane and targets of intracellular action were investigated. LHP7 exhibited an inhibitory effect on the S. aureus growth, similar to those achieved by plectasin, vancomycin and gramicidin...
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