New type non-lantibiotic bacteriocins: Circular and leaderless bacteriocins

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Bacteriocins are antimicrobial peptides that are ribosomally synthesised by bacteria. Bacteriocins produced by Gram-positive bacteria, including lactic acid bacteria, are under focus as the next generation of safe natural biopreservatives and as therapeutic alternatives to antibiotics. Recently, two novel types of non-lantibiotic class II bacteriocins have been reported with unique characteristics in their structure and biosynthesis mechanism. One is a circular bacteriocin that contains a head-to-tail structure in the mature form, and the other is a leaderless bacteriocin without an N-terminal extension in the precursor peptide. A circular structure can provide the peptide with remarkable stability against various stresses; indeed, circular bacteriocins are known to possess higher stability than general linear bacteriocins. Leaderless bacteriocins are distinct from general bacteriocins, because they do not contain N-terminal leader sequences, which are responsible for the recognition process during secretion and for inactivation of bacteriocins inside producer cells. Leaderless bacteriocins do not require any post-translational processing for activity. These two novel types of bacteriocins are promising antimicrobial compounds, and their biosynthetic mechanisms are expected to be applied in synthetic biology to design new peptides and for new mass production systems. However, many questions remain about their biosynthesis. In this review, we introduce recent studies on these types of bacteriocins and their potential to open a new world of antimicrobial peptides.

Original languageEnglish
Pages (from-to)3-12
Number of pages10
JournalBeneficial microbes
Volume3
Issue number1
DOIs
Publication statusPublished - Mar 2012

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Bacteriocins
Peptides
Synthetic Biology
Bacteria
Secretory Pathway
Gram-Positive Bacteria
Lactic Acid

All Science Journal Classification (ASJC) codes

  • Microbiology (medical)
  • Microbiology

Cite this

New type non-lantibiotic bacteriocins : Circular and leaderless bacteriocins. / Masuda, Yoshimitsu; Zendo, Takeshi; Sonomoto, Kenji.

In: Beneficial microbes, Vol. 3, No. 1, 03.2012, p. 3-12.

Research output: Contribution to journalArticle

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