Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Oxidoreductase
Reexamination Certificate
2007-05-22
2007-05-22
Prouty, Rebecca E. (Department: 1652)
Chemistry: molecular biology and microbiology
Enzyme , proenzyme; compositions thereof; process for...
Oxidoreductase
C435S220000, C435S156000, C435S069100, C435S252200, C536S023200
Reexamination Certificate
active
10528000
ABSTRACT:
The present invention provides a novel polypeptide efficiently forming (R)-N-benzyl-3-pyrrolidinol, a polynucleotide coding for said polypeptide, and use of the same.The present invention relates to a polypeptide having the following physical and chemical properties (1) to (4):(1) activity: acting on N-benzyl-3-pyrrolidinone with NADH or NADPH as a coenzyme, to form (R)-N-benzyl-3-pyrrolidinol;(2) optimum pH for activity: 5.5 to 6.0;(3) optimum temperature for activity: 50° C. to 55° C.;(4) molecular weight: about 55,000 as determined by gel filtration analysis, about 28,000 as determined by SDS polyacrylamide gel electrophoresis analysis.The present invention also relates to a polypeptide comprising the amino acid sequence shown under SEQ ID NO:1 in the sequence listing, a polynucleotide coding for said polypeptide, and a transformant producing said polypeptide at high levels.
REFERENCES:
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Li, Zhi, et al., “Preparation of optically activeN-benzyl-3-hydroxypyrrolidine by enzymatic hydroxylation,”Tetrahedron: Asymmetry, 10 (1999) 1323-1333.
Kizaki Noriyuki
Nishiyama Tozo
Yasohara Yoshihiko
Kaneka Corporation
Meah Mohammad Younus
Prouty Rebecca E.
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