Patent · US Active

Zymomonas with improved xylose utilization

US7998722B2 · kind B2 · utility

16Cited by

6References

9Claims

0Family size

Assignees

E.I. DU PONT DE NEMOURS AND COMPANY · US
Alliance for Sustainable Energy, LLC · US

Inventors

Paul V. Viitanen · West Chester, US
Luan Tao · Claymont, US
Yuying Zhang · New Hope, US
Perry G. Caimi · Kennett Square, US
Carol M. McCutchen · Dickson, US
Laura McCole · Coatesville, US
Min Zhang · 安丰镇, CN
Yat-Chen Chou · Lakewood, US
Mary Ann Franden · Centennial, US

Key dates

Filing date	Mar 25, 2009
Grant date	Aug 16, 2011
Priority date	—
Expiry date	Mar 25, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E50/10
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

Strains of Zymomonas were engineered by introducing a chimeric xylose isomerase gene that contains a mutant promoter of the Z. mobilis glyceraldehyde-3-phosphate dehydrogenase gene. The promoter directs increased expression of xylose isomerase, and when the strain is in addition engineered for expression of xylulokinase, transaldolase and transketolase, improved utilization of xylose is obtained.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.