Recombinant microorganisms for the production of fatty amines
The disclosure relates to recombinant microorganisms for the production of fatty amines and derivatives thereof. Further contemplated are cultured recombinant host cells as well as methods of producing fatty amines by employing these host cells.
1. A recombinant bacterial cell for production of a fatty amine, wherein the fatty amine has a carbon chain length of between 5 to 24 carbons, comprising:
(i) one or more expressed genes that encode an exogenous biosynthetic enzyme having thioesterase activity of EC number 3.1.2.-, 3.1.1.5, or 3.1.2.14;
(ii) one or more expressed genes that encode an exogenous biosynthetic enzyme having carboxylic acid reductase activity of EC number 1.2.99.6; and
(iii) one or more expressed genes that encode an exogenous biosynthetic enzyme having aminotransferase (EC number 2.6.1) or amine dehydrogenase activity (EC number 1.4.9, 1.4.98, 1.4.99), wherein said recombinant bacterial cell produces the fatty amine in vivo.
2. The recombinant bacterial cell of claim 1 , wherein said exogenous biosynthetic enzyme having thioesterase activity converts an acyl-ACP or acyl-CoA to a fatty acid.
3. The recombinant bacterial cell of claim 2 , wherein said exogenous biosynthetic enzyme having carboxylic acid reductase activity converts said fatty acid to a fatty aldehyde.
4. The recombinant bacterial cell of claim 3 , wherein said exogenous biosynthetic enzyme having aminotransferase or amine dehydrogenase activity converts said fatty aldehyde to a fatty amine.
5. The recombinant bacterial cell of claim 1 , wherein said exogenous biosynthetic enzyme having thioesterase activity is encoded by a tesA gene.
6. The recombinant bacterial cell of claim 1 , wherein said exogenous biosynthetic enzyme having carboxylic acid reductase activity is encoded by a carB gene.
7. The recombinant bacterial cell of claim 1 , wherein said exogenous biosynthetic enzyme having aminotransferase activity is a putrescine or GABA aminotransferase.
8. The recombinant bacterial cell of claim 7 , wherein the putrescine aminotransferase is YgjG.
9. The recombinant bacterial cell of claim 8 , wherein said YgjG is encoded by an ygjG gene.
10. The recombinant bacterial cell of claim 7 , wherein the GABA aminotransferase is PuuE.
11. The recombinant bacterial cell of claim 10 , wherein said PuuE is encoded a puuE gene.
12. The recombinant bacterial cell of claim 1 , wherein said exogenous biosynthetic enzyme having amine dehydrogenase activity is a methylamine dehydrogenase.
13. The recombinant bacterial cell of claim 12 , wherein said methylamine dehydrogenase is from Paracoccus denitrificans.
14. The recombinant bacterial cell of claim 1 , wherein said recombinant bacterial cell is selected from the group consisting of Escherichia, Bacillus, Cyanophyta, Lactobacillus, Zymomonas, Rhodococcus , and Pseudomonas.
15. The recombinant bacterial cell of claim 14 , wherein said Escherichia is Escherichia coli.
16. The recombinant bacterial cell of claim 14 , wherein said Cyanophyta is selected from the group consisting of Prochlorococcus, Synechococcus, Synechocystis, Cyanothece , and Nostoc punctiforme.
17. The recombinant bacterial cell of claim 14 , wherein said Cyanophyta is selected from the group consisting of Synechococcus elongatus PCC7942, Synechocystis sp. PCC6803, and Synechococcus sp. PCC7001.
18. A cell culture comprising the recombinant bacterial cell of claim 1 .
19. A method of producing a fatty amine, comprising culturing the bacterial cell of claim 1 in a fermentation broth containing a carbon source.
20. The method of claim 19 , further comprising harvesting fatty amines that collect in the fermentation broth.