Pnp gene modification for improved xylose utilization in Zymomonas
Patent
·
OSTI ID:1165440
The endogenous pnp gene encoding polynucleotide phosphorylase in the Zymomonas genome was identified as a target for modification to provide improved xylose utilizing cells for ethanol production. The cells are in addition genetically modified to have increased expression of ribose-5-phosphate isomerase (RPI) activity, as compared to cells without this genetic modification, and are not limited in xylose isomerase activity in the absence of the pnp modification.
- Research Organization:
- E I Du Pont de Nemours and Company, Wilmington, DE (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC36-07GO17056
- Assignee:
- E I Du Pont de Nemours and Company (Wilmington, DE)
- Patent Number(s):
- 8,911,983
- Application Number:
- 13/711,646
- OSTI ID:
- 1165440
- Resource Relation:
- Patent File Date: 2012 Dec 12
- Country of Publication:
- United States
- Language:
- English
Enhancing D-xylose and L-arabinose utilization in Zymomonas cells
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