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Insight into the bovine milk peptide LPcin‐YK3 selection in the proteolytic system of Lactobacillus species
Author(s) -
Sung Woo Yong,
Yu Ji Won,
Hwang Jong Tae,
Nam Hee Jin,
Park Ji Ye,
Kim Yongae,
Cho JangHee
Publication year - 2020
Publication title -
journal of peptide science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 66
eISSN - 1099-1387
pISSN - 1075-2617
DOI - 10.1002/psc.3268
Subject(s) - antimicrobial , peptide , lactic acid , bacteria , biochemistry , antimicrobial peptides , chemistry , lactobacillus , proteolytic enzymes , proteolysis , oligopeptide , microbiology and biotechnology , biology , enzyme , fermentation , genetics
Antimicrobial peptides are class of small, positively charged peptides known for their broad‐spectrum antimicrobial activity. Antimicrobial activities for most antimicrobial peptides have largely remained elusive, particularly in the lactic acid bacteria. However, recently our investigation using LPcin‐YK3, an antimicrobial peptide from bovine milk, suggests that in vitro antimicrobial activity was reduced over 100‐fold compared with pathogenic bacteria. Additionally, for the structural study of how antimicrobial peptide undergoes its reaction at the proteolytic pathway of lactic acid bacteria based on degradation assay and propidium iodide staining, we performed molecular docking for interaction between oligopeptide‐binding protein A and LPcin‐YK3 peptide. Given that degradation related to the LPcin‐YK3 peptide in lactic acid bacteria proteolytic system, the inhibitory inactivity of LPcin‐YK3 against beneficial lactic acid bacteria strains may be one of the primary pharmacological properties of recombinant peptide discovered in bovine milk. These results provide structural and functional insights into the proteolytic mechanism and possibility as a putative substrate of oligopeptide‐binding protein A in respect of LPcin‐YK3 peptide.