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Design, Characterization, and Antimicrobial Activity of a Novel Antimicrobial Peptide Derived from Bovine Lactophoricin

김용애|정지호|김지선
한국미생물·생명공학회 (The Korean Society For Microbiology And Biotechnology)|2017|Journal of Microbiology and Biotechnology|제27권 제4호|pp. 759-767|DOI 10.4014/jmb.1609.09004

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참고문헌

키워드

antimicrobial activityantimicrobial peptideBovine lactophoricincationic amphipathic peptidesengineered analogs
주제분류생물학

초록

Lactophoricin (LPcin), which is a part of proteose peptone isolated from bovine milk, is a cationic amphipathic α-helical antimicrobial peptide. Its truncated variants and mutated analogs were designed and their antimicrobial activities were evaluated by using various assays, like broth dilution methods and disk diffusion methods as well as hemolysis assay. Three analogs, LPcin-C8 (LPcin-YK1), LPcin-T2&6W (LPcin-YK2), and LPcin-T2&6W-C8 (LPcin-YK3), which showed better antibiotic activities than LPcin, were selected. Their secondary structures were also characterized by using CD spectropolarimetry. These three analogs of LPcin could be used as an alternative source of powerful antibacterial agents.

Abstract

Lactophoricin (LPcin), which is a part of proteose peptone isolated from bovine milk, is a cationic amphipathic α-helical antimicrobial peptide. Its truncated variants and mutated analogs were designed and their antimicrobial activities were evaluated by using various assays, like broth dilution methods and disk diffusion methods as well as hemolysis assay. Three analogs, LPcin-C8 (LPcin-YK1), LPcin-T2&6W (LPcin-YK2), and LPcin-T2&6W-C8 (LPcin-YK3), which showed better antibiotic activities than LPcin, were selected. Their secondary structures were also characterized by using CD spectropolarimetry. These three analogs of LPcin could be used as an alternative source of powerful antibacterial agents.

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