L-arabinose fermenting yeast

US7846712B2 · kind B2 · utility

Assignee

• Alliance for Sustainable Energy, LLC · US

Inventors

• Min Zhang · 安丰镇, CN
• Arjun Singh · Lakewood, US
• Eric P. Knoshaug · Golden, US
• Mary Ann Franden · Centennial, US
• Eric Jarvis · Boulder, US
• Pirkko Suominen · Helsinki, FI

Key dates

• Filing date: Mar 19, 2007
• Grant date: Dec 7, 2010
• Expiry date: Jul 30, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E50/10
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

An L-arabinose utilizing yeast strain is provided for the production of ethanol by introducing and expressing bacterial araA, araB and araD genes. L-arabinose transporters are also introduced into the yeast to enhance the uptake of arabinose. The yeast carries additional genomic mutations enabling it to consume L-arabinose, even as the only carbon source, and to produce ethanol. Methods of producing ethanol include utilizing these modified yeast strains.