Isomaltulose synthases, polynucleotides encoding them and uses therefor

US7524654B2 · kind B2 · utility

Assignee

• The University of Queensland St. Lucia · AU

Inventors

• Robert Birch · Forsayth, AU
• Luguang Wu · Forsayth, AU

Key dates

• Filing date: Feb 2, 2006
• Grant date: Apr 28, 2009
• Expiry date: Dec 5, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C13K13/00
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

The invention is directed to novel enzymes that convert sucrose to isomaltulose. More particularly, the present invention discloses novel sucrose isomerases, polynucleotides encoding these sucrose isomerases, methods for isolating such polynucleotides and nucleic acid constructs that express these polynucleotides. Also disclosed are cells, including transformed bacterial or plant cells, and differentiated plants comprising cells, which contain these sucrose isomerase-encoding polynucleotides, as well as extracts thereof. Methods of producing isomaltulose are also disclosed which use the polypeptides, polynucleotides, cells, cell extracts and plants of the invention.