One Enzyme, Three Metabolites: Shewanella algae Controls Siderophore Production via the Cellular Substrate Pool.
Cell Chem Biol
; 24(5): 598-604.e10, 2017 May 18.
Article
en En
| MEDLINE
| ID: mdl-28434877
ABSTRACT
Shewanella algae B516 produces avaroferrin, an asymmetric hydroxamate siderophore, which has been shown to inhibit swarming motility of Vibrio alginolyticus. We aimed to elucidate the biosynthesis of this siderophore and to investigate how S. algae coordinates the production of avaroferrin and its two symmetric counterparts. We reconstituted the reaction in vitro with the main enzyme AvbD and the putative biosynthetic precursors, and demonstrate that multispecificity of this enzyme results in the production of all three cyclic hydroxamate siderophores that were previously isolated as natural products from S. algae. Surprisingly, purified AvbD exhibited a clear preference for the larger cadaverine-derived substrate. In live cells, however, siderophore ratios are maximized toward avaroferrin production, and we demonstrate that these siderophore ratios are the result of a regulation on substrate pool level, which may allow rapid evolutionary adaptation to environmental changes. Our results thereby give insights into a unique evolutionary strategy toward metabolite diversity.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Sideróforos
/
Shewanella
Idioma:
En
Revista:
Cell Chem Biol
Año:
2017
Tipo del documento:
Article
País de afiliación:
Alemania