Method for the production of 1,3-propanediol by recombinant microorganisms
First Claim
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1. A method for the production of 1,3-propanediol from a recombinant microorganism comprising:
- (i) transforming a suitable host microorganism with one or more transformation cassettes each of which comprises at least one of(a) a gene encoding a glycerol-3-phosphate dehydrogenase activity;
(b) a gene encoding a glycerol-3-phosphatase activity;
(c) genes encoding a dehydratase activity; and
(d) a gene encoding 1,3-propanediol oxidoreductase activity,wherein all of the genes of (a)-(d) are introduced into the host microorganism;
(ii) culturing the transformed host microorganism under suitable conditions in the presence of at least one carbon source selected from the group consisting of monosaccharides, oligosaccharides, polysaccharides, or a one-carbon substrate whereby 1,3-propanediol is produced; and
(iii) recovering the 1,3-propanediol.
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Abstract
Recombinant organisms are provided comprising genes encoding glycerol-3-phosphate dehydrogenase, glycerol-3-phosphatase, glycerol dehydratase and 1,3-propanediol oxidoreductase activites useful for the production of 1,3-propanediol from a variety of carbon substrates.
108 Citations
13 Claims
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1. A method for the production of 1,3-propanediol from a recombinant microorganism comprising:
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(i) transforming a suitable host microorganism with one or more transformation cassettes each of which comprises at least one of (a) a gene encoding a glycerol-3-phosphate dehydrogenase activity; (b) a gene encoding a glycerol-3-phosphatase activity; (c) genes encoding a dehydratase activity; and (d) a gene encoding 1,3-propanediol oxidoreductase activity, wherein all of the genes of (a)-(d) are introduced into the host microorganism; (ii) culturing the transformed host microorganism under suitable conditions in the presence of at least one carbon source selected from the group consisting of monosaccharides, oligosaccharides, polysaccharides, or a one-carbon substrate whereby 1,3-propanediol is produced; and (iii) recovering the 1,3-propanediol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for the production of 1,3-propanediol from a recombinant microorganism comprising:
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(i) culturing, under suitable conditions in the presence of at least one carbon source selected from the group consisting of monosaccharides, oligosaccharides, polysaccharides, or a one-carbon substrate, a transformed host microorganism comprising (a) a gene encoding a glycerol-3-phosphate dehydrogenase activity; (b)a gene encoding a glycerol-3-phosphatase activity; (c)genes encoding a dehydratase activity; and (d) a gene encoding 1,3-propanediol oxidoreductase activity, wherein all of the genes (a)-(d) are exogenous to the host microorganism, whereby 1,3-propanediol is produced; and (ii) recovering the 1,3-propanediol.
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13. A host cell transformed with a group of genes comprising:
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(1) a gene encoding a glycerol-3-phosphate dehydrogenase enzyme corresponding to the amino acid sequence given in SEQ ID NO;
11;(2) a gene encoding a glycerol-3-phosphatase enzyme corresponding to the amino acid sequence given in SEQ ID NO;
17;(3) a gene encoding the a subunit of the glycerol dehydratase enzyme corresponding to the amino acid sequence given in SEQ ID NO;
34;(4) a gene encoding the β
subunit of the glycerol dehydratase enzyme corresponding to the amino acid sequence given in SEQ ID NO;
35;(5) a gene encoding the γ
subunit of the glycerol dehydratase enzyme corresponding to the amino acid sequence given in SEQ ID NO;
36; and(6) a gene encoding the 1,3-propanediol oxidoreductase enzyme corresponding to the amino acid sequence given in SEQ ID NO;
37,whereby the transformed host cell produces 1,3-propanediol on at least one substrate selected from the group consisting of monosaccharides, oligosaccharides, and polysaccharides or from a one-carbon substrate.
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Specification