A Staphylococcus capitis strain with unusual bacteriocin production
Abstract Staphylococcus capitis is a member of the human and mammal skin microbiomes and is considered less harmful than Staphylococcus aureus. S. capitis subsp. urealyticus BN2 was isolated from a cat and expressed strong antibacterial activity against a range of Gram‐positive species, most notably...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-11-01
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| Series: | Microbial Biotechnology |
| Online Access: | https://doi.org/10.1111/1751-7915.14356 |
| _version_ | 1797644598547316736 |
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| author | Christiane Szekat Michaele Josten Jasmin Rickmeyer Max Crüsemann Gabriele Bierbaum |
| author_facet | Christiane Szekat Michaele Josten Jasmin Rickmeyer Max Crüsemann Gabriele Bierbaum |
| author_sort | Christiane Szekat |
| collection | DOAJ |
| description | Abstract Staphylococcus capitis is a member of the human and mammal skin microbiomes and is considered less harmful than Staphylococcus aureus. S. capitis subsp. urealyticus BN2 was isolated from a cat and expressed strong antibacterial activity against a range of Gram‐positive species, most notably including S. aureus strains with resistance to methicillin (MRSA) and strains with intermediate resistance to vancomycin (VISA). These latter strains are normally relatively resistant to bacteriocins, due to cell wall and cell membrane modifications. Genomic sequencing showed that the strain harboured at least two complete gene clusters for biosynthesis of antagonistic substances. The complete biosynthetic gene cluster of the well‐known lantibiotic gallidermin was encoded on a large plasmid and the mature peptide was present in isopropanol cell extracts. In addition, a chromosomal island contained a novel non‐ribosomal peptide synthetase (NRPS) gene cluster. Accidental deletion of two NRPS modules and partial purification of the anti‐VISA activity showed that this novel bacteriocin represents a complex of differently decorated, non‐ribosomal peptides. Additionally, a number of phenol‐soluble modulins (PSMs) was detected by mass spectrometry of whole cells. Producing these compounds, the strain was able to outcompete several S. aureus strains, including MRSA and VISA, in tube cultures. |
| first_indexed | 2024-03-11T14:33:03Z |
| format | Article |
| id | doaj.art-25f664d768144bb58b397b26b3fd2028 |
| institution | Directory Open Access Journal |
| issn | 1751-7915 |
| language | English |
| last_indexed | 2024-03-11T14:33:03Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | Microbial Biotechnology |
| spelling | doaj.art-25f664d768144bb58b397b26b3fd20282023-10-31T07:14:55ZengWileyMicrobial Biotechnology1751-79152023-11-0116112181219310.1111/1751-7915.14356A Staphylococcus capitis strain with unusual bacteriocin productionChristiane Szekat0Michaele Josten1Jasmin Rickmeyer2Max Crüsemann3Gabriele Bierbaum4Institute of Medical Microbiology, Immunology and Parasitology University Hospital Bonn Bonn GermanyInstitute of Medical Microbiology, Immunology and Parasitology University Hospital Bonn Bonn GermanyInstitute of Medical Microbiology, Immunology and Parasitology University Hospital Bonn Bonn GermanyInstitute of Pharmaceutical Biology University of Bonn Bonn GermanyInstitute of Medical Microbiology, Immunology and Parasitology University Hospital Bonn Bonn GermanyAbstract Staphylococcus capitis is a member of the human and mammal skin microbiomes and is considered less harmful than Staphylococcus aureus. S. capitis subsp. urealyticus BN2 was isolated from a cat and expressed strong antibacterial activity against a range of Gram‐positive species, most notably including S. aureus strains with resistance to methicillin (MRSA) and strains with intermediate resistance to vancomycin (VISA). These latter strains are normally relatively resistant to bacteriocins, due to cell wall and cell membrane modifications. Genomic sequencing showed that the strain harboured at least two complete gene clusters for biosynthesis of antagonistic substances. The complete biosynthetic gene cluster of the well‐known lantibiotic gallidermin was encoded on a large plasmid and the mature peptide was present in isopropanol cell extracts. In addition, a chromosomal island contained a novel non‐ribosomal peptide synthetase (NRPS) gene cluster. Accidental deletion of two NRPS modules and partial purification of the anti‐VISA activity showed that this novel bacteriocin represents a complex of differently decorated, non‐ribosomal peptides. Additionally, a number of phenol‐soluble modulins (PSMs) was detected by mass spectrometry of whole cells. Producing these compounds, the strain was able to outcompete several S. aureus strains, including MRSA and VISA, in tube cultures.https://doi.org/10.1111/1751-7915.14356 |
| spellingShingle | Christiane Szekat Michaele Josten Jasmin Rickmeyer Max Crüsemann Gabriele Bierbaum A Staphylococcus capitis strain with unusual bacteriocin production Microbial Biotechnology |
| title | A Staphylococcus capitis strain with unusual bacteriocin production |
| title_full | A Staphylococcus capitis strain with unusual bacteriocin production |
| title_fullStr | A Staphylococcus capitis strain with unusual bacteriocin production |
| title_full_unstemmed | A Staphylococcus capitis strain with unusual bacteriocin production |
| title_short | A Staphylococcus capitis strain with unusual bacteriocin production |
| title_sort | staphylococcus capitis strain with unusual bacteriocin production |
| url | https://doi.org/10.1111/1751-7915.14356 |
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