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Frontiers in Microbiology, volume 11

A Novel Peptide Antibiotic Produced by Streptomyces roseoflavus Strain INA-Ac-5812 With Directed Activity Against Gram-Positive Bacteria

Publication typeJournal Article
Publication date2020-09-15
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor5.2
ISSN1664302X
Microbiology (medical)
Microbiology
Abstract
In this work, we report the isolation and detailed functional characterization for the new non-ribosomally synthesized antibiotic 5812-A/C, which was derived from metabolites of Streptomyces roseoflavus INA-Ac-5812. According to its chemical structure the studied 5812-A/C preliminary is composed of a cyclic peptide part covalently bounded with an arabinose residue. N-terminal amino acid sequencing of the native peptide has identified its partial structure of Leu-Asp-Gly-Ser-Gly and consisting of a Tyr residue that it supposed two-component peptide nature for the molecule studied. However, the structural analysis of the antibiotic complex derived from Streptomyces roseoflavus INA-Ac-5812 is still ongoing. The mechanism of action of 5812-A/C was assessed in comparison with its most related analogue, the lipopeptide antibiotic daptomycin, given the presence in both antimicrobials of an L-kynurenine amino acid residue. The inhibitory activity of 5812-A/C against Gram-positive bacteria including methicillin-resistant strains of S. aureus was similar to daptomycin. The mechanism of action of 5812-A/C was associated with the disruption of membrane integrity, which differs in comparison to daptomycin and is most similar to the antimicrobial membrane-disturbing peptides. However, 5812-A/C demonstrated a calcium-dependent mode of action. In addition, unlike daptomycin, 5812-A/C was able to penetrate mature biofilms and inhibit the metabolic activity of embedded S. aureus cells. At the same time, 5812-A/C has no hemolytic activity toward erythrocyte but possessed weak cytotoxic activity represented by heterochromatin condensation in human buccal epithelium cells. The biological properties of the peptide 5812-A/C suggest its classification as a calcium-dependent antibiotic effective against a wide spectrum of Gram-positive pathogenic bacteria.

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Vasilchenko A. S. et al. A Novel Peptide Antibiotic Produced by Streptomyces roseoflavus Strain INA-Ac-5812 With Directed Activity Against Gram-Positive Bacteria // Frontiers in Microbiology. 2020. Vol. 11.
GOST all authors (up to 50) Copy
Vasilchenko A. S., Julian W. T., Lapchinskaya O. A., Katrukha G. S., Sadykova V. S., Rogozhin E. A. A Novel Peptide Antibiotic Produced by Streptomyces roseoflavus Strain INA-Ac-5812 With Directed Activity Against Gram-Positive Bacteria // Frontiers in Microbiology. 2020. Vol. 11.
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RIS Copy
TY - JOUR
DO - 10.3389/fmicb.2020.556063
UR - https://doi.org/10.3389%2Ffmicb.2020.556063
TI - A Novel Peptide Antibiotic Produced by Streptomyces roseoflavus Strain INA-Ac-5812 With Directed Activity Against Gram-Positive Bacteria
T2 - Frontiers in Microbiology
AU - Vasilchenko, Alexey S.
AU - Julian, William T
AU - Lapchinskaya, Olda A
AU - Katrukha, Genrikh S
AU - Sadykova, Vera S
AU - Rogozhin, Eugene A.
PY - 2020
DA - 2020/09/15 00:00:00
PB - Frontiers Media S.A.
VL - 11
PMID - 33072016
SN - 1664-302X
ER -
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BibTex Copy
@article{2020_Vasilchenko,
author = {Alexey S. Vasilchenko and William T Julian and Olda A Lapchinskaya and Genrikh S Katrukha and Vera S Sadykova and Eugene A. Rogozhin},
title = {A Novel Peptide Antibiotic Produced by Streptomyces roseoflavus Strain INA-Ac-5812 With Directed Activity Against Gram-Positive Bacteria},
journal = {Frontiers in Microbiology},
year = {2020},
volume = {11},
publisher = {Frontiers Media S.A.},
month = {sep},
url = {https://doi.org/10.3389%2Ffmicb.2020.556063},
doi = {10.3389/fmicb.2020.556063}
}
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