Formamide-based production of amines by metabolically engineering Corynebacterium glutamicum.
Appl Microbiol Biotechnol
; 107(13): 4245-4260, 2023 Jul.
Article
in En
| MEDLINE
| ID: mdl-37246985
ABSTRACT
Formamide is rarely used as nitrogen source by microorganisms. Therefore, formamide and formamidase have been used as protection system to allow for growth under non-sterile conditions and for non-sterile production of acetoin, a product lacking nitrogen. Here, we equipped Corynebacterium glutamicum, a renowned workhorse for industrial amino acid production for 60 years, with formamidase from Helicobacter pylori 26695, enabling growth with formamide as sole nitrogen source. Thereupon, the formamide/formamidase system was exploited for efficient formamide-based production of the nitrogenous compounds L-glutamate, L-lysine, N-methylphenylalanine, and dipicolinic acid by transfer of the formamide/formamidase system to established producer strains. Stable isotope labeling verified the incorporation of nitrogen from formamide into biomass and the representative product L-lysine. Moreover, we showed ammonium leakage during formamidase-based access of formamide to be exploitable to support growth of formamidase-deficient C. glutamicum in co-cultivation and demonstrated that efficient utilization of formamide as sole nitrogen source benefitted from overexpression of formate dehydrogenase. KEY POINTS ⢠C. glutamicum was engineered to access formamide. ⢠Formamide-based production of nitrogenous compounds was established. ⢠Nitrogen cross-feeding supported growth of a formamidase-negative strain.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Corynebacterium glutamicum
/
Lysine
Language:
En
Journal:
Appl Microbiol Biotechnol
Year:
2023
Document type:
Article
Affiliation country: