Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Oxidoreductase
Reexamination Certificate
2006-07-11
2006-07-11
Saidha, Tekchand (Department: 1652)
Chemistry: molecular biology and microbiology
Enzyme , proenzyme; compositions thereof; process for...
Oxidoreductase
C435S069100, C435S183000, C435S252300, C435S252330, C435S858000, C435S320100, C536S023200
Reexamination Certificate
active
07074604
ABSTRACT:
Protein engineered nucleic acid fragments encoding a CrtO ketolase and a CrtZ hydroxylase are provided with increased astaxanthin synthesis activity. Methods using the present nucleic acid fragments are also provided for increasing or altering astaxanthin production in suitable production hosts.
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Cheng Qiong
Shyr Joanne Y.
Tang Xiao-Song
Tao Luan
E. I. du Pont de Nemours and Company
Fronda Christian L.
Saidha Tekchand
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