Detection and characterization of a rare two‐component lantibiotic, amyloliquecidin GF610 produced by Bacillus velezensis, using a combination of culture, molecular and bioinformatic analyses
Aim To detect and characterize novel lantibiotics from a collection of Bacillus spp. using a multifaceted analytical approach. Methods and Results A previously completed microassay identified 45 Bacillus isolates with anti‐Listeria activity. The isolates were PCR screened using degenerate primers ta...
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Published in | Journal of applied microbiology Vol. 132; no. 2; pp. 994 - 1007 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
Oxford University Press
01.02.2022
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Subjects | |
Online Access | Get full text |
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Summary: | Aim
To detect and characterize novel lantibiotics from a collection of Bacillus spp. using a multifaceted analytical approach.
Methods and Results
A previously completed microassay identified 45 Bacillus isolates with anti‐Listeria activity. The isolates were PCR screened using degenerate primers targeting conserved sequences in lanM‐type lantibiotics. B. velezensis GF610 produced a PCR product whose sequence, along with genome mining and bioinformatics, guided the liquid chromatographic analysis of strain's cell‐free extracts and the mass spectrometry of purified fractions. Results revealed a new amyloliquecidin variant (designated GF610) produced by the strain. Amyloliquecidin GF610 is a two‐component lantibiotic with α and β peptides having monoisotopic masses of 3026 and 2451 Da, and molecular formulae C130H191N35O39S5 and C110H158N26O30S4, respectively. Amyloliquecidin GF610 is active against Listeria monocytogenes, Clostridium sporogenes, Clostridioides difficile, Staphylococcus aureus and Alicyclobacillus acidoterrestris with minimum inhibitory concentrations (MICs) in the range of 0.5–7.0 µmol l–1.
Conclusions
The proposed multifaceted analytical approach was valuable to provide a deep and proper characterization of a novel bacteriocin, amyloliquecidin GF610, with high antimicrobial activity against Gram‐positive bacteria.
Significance and Impact
The discovered Amyloliquecidin GF610 is potentially useful in food, agricultural or medical applications. The analytical approach followed may facilitate future discoveries of two‐component lantibiotics, which are challenging compounds to detect and characterize. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1364-5072 1365-2672 |
DOI: | 10.1111/jam.15290 |