Minor Actinides Can Replace Essential Lanthanides in Bacterial Life.
Angew Chem Int Ed Engl
; 62(31): e202303669, 2023 08 01.
Article
en En
| MEDLINE
| ID: mdl-37074219
ABSTRACT
Certain f-block elements-the lanthanides-have biological relevance in the context of methylotrophic bacteria. The respective strains incorporate these 4 f elements into the active site of one of their key metabolic enzymes, a lanthanide-dependent methanol dehydrogenase. In this study, we investigated whether actinides, the radioactive 5 f elements, can replace the essential 4 f elements in lanthanide-dependent bacterial metabolism. Growth studies with Methylacidiphilum fumariolicum SolV and the Methylobacterium extorquens AM1 ΔmxaF mutant demonstrate that americium and curium support growth in the absence of lanthanides. Moreover, strain SolV favors these actinides over late lanthanides when presented with a mixture of equal amounts of lanthanides together with americium and curium. Our combined in vivo and in vitro results establish that methylotrophic bacteria can utilize actinides instead of lanthanides to sustain their one-carbon metabolism if they possess the correct size and a +III oxidation state.
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Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Methylobacterium extorquens
/
Elementos de la Serie de los Lantanoides
Idioma:
En
Año:
2023
Tipo del documento:
Article