Patent · US Active

Mutant carotenoid ketolase

US7422873B2 · kind B2 · utility

2Cited by

3References

11Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Kristen Janet Stead · Wilmington, US
Henry Yao · Boothwyn, US
Rick W. Ye · Hockessin, US

Key dates

Filing date	Mar 31, 2006
Grant date	Sep 9, 2008
Priority date	—
Expiry date	May 9, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12N9/0069
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

CrtW carotenoid ketolases are provided useful for the production of astaxanthin. The ketolases genes of the present invention exhibit improved ketolase activity when converting cyclic hydroxylated carotenoid intermediates into astaxanthin. Recombinant expression of the present carotenoid ketolases in host cell producing cyclic hydroxylated carotenoid intermediates enabled increased production of astaxanthin.

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