Biosynthetic pathways and methods
AssigneeRegents of the University of Minnesota
InventorsKechun Zhang, Mingyong Xiong
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Abstract
This disclosure describes a recombinant microbial cells and methods of making and using such recombinant microbial cells. Generally, the recombinant cells may be modified to exhibit increased biosynthesis of a TCA derivative compared to a wild-type control. In some embodiments, the TCA derivative can include 1,4-butanediol. In various embodiments, the microbial cell is a fungal cell or a bacterial cell. In some embodiments, the increased biosynthesis of the TCA derivative can include an increase in xylose dehydrogenase activity, xylonolactonase activity, xylonate dehydratase activity, or 2-keto-3-deoxyaldonic acid dehydratase activity.
Claims11
A recombinant microbial cell modified to exhibit increased biosynthesis of 1,4-butanediol from D-arabinose compared to a wild-type control, the cell comprising an engineered metabolic pathway comprising:
- an enzyme that converts D-arabinose to D-arabinolactone comprising the amino acid sequence of SEQ ID NO:1;
- an enzyme that converts D-arabinonic acid to 2-oxo-4(s),5-dihydroxy-pentanoic acid comprising the amino acid sequence of SEQ ID NO:6;
- an enzyme that converts 2-oxo-4(s),5-dihydroxy-pentanoic acid to 2,5-dioxopentanoic acid comprising the amino acid sequence of SEQ ID NO:11;
- an enzymatic pathway that converts 2,5-dioxopentanoic acid to 1,4-butanediol.
Dependencies are inferred from the claim text.