Bathiapeptides: Polythiazole-Containing Peptides from a Marine Biofilm-Derived Bacillus sp.
J Nat Prod
; 85(7): 1751-1762, 2022 07 22.
Article
en En
| MEDLINE
| ID: mdl-35703501
ABSTRACT
Bacteria in marine biofilms are a rich reservoir of natural products. To facilitate novel secondary metabolite discovery, we investigated the metabolic profile of a marine biofilm-derived Bacillus sp. B19-2 by combining bioinformatics and LC-UV-MS analyses. After dereplication and purification of putatively unknown compounds, a new family of compounds 1-8 was uncovered and named bathiapeptides. Structural elucidation using NMR, HRESIMS, ozonolysis, advanced Marfey's analysis, and X-ray diffraction revealed that bathiapeptides are polypeptides that contain a rare polythiazole moiety. These compounds exhibited strong cytotoxicity against Hep G2, HeLa, MCF-7, and MGC-803 cell lines, and the lowest IC50 value was 0.5 µM. An iterative biosynthesis logic in bathiapeptides' biosynthesis was proposed based on the identified chemical structures and putative gene cluster analysis.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Bacillus
/
Productos Biológicos
Límite:
Humans
Idioma:
En
Revista:
J Nat Prod
Año:
2022
Tipo del documento:
Article