Coupled cofactor-dependent enzymatic reaction systems in...

Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C435S041000, C435S132000, C435S155000, C424S094400

Reexamination Certificate

active

07632665

ABSTRACT:
The present application relates to a reaction system in which chemically valuable compounds can be obtained in high enantiomer concentrations with the aid of a coupled enzymatically operating transformation process. The coupled enzymatic reaction system comprises a cofactor-dependent enzymatic transformation of an organic compound and an enzymatic regeneration of the cofactor, wherein the reaction system operates in aqueous solution with an amount of substrate above the solubility limit thereof. In the preferred embodiments, an alcohol dehydrogenase is the cofactor-dependent enzyme, and the regeneration of the cofactor (e.g. NADH or NADPH) is acheved by means of formate dehydrogenase.

REFERENCES:
patent: 5795750 (1998-08-01), Kruse
patent: 6242234 (2001-06-01), Kula
patent: 6987013 (2006-01-01), Hummel
patent: 2002/0064847 (2002-05-01), Yamamoto et al.
patent: 2003/0054520 (2003-03-01), Bommanus et al.
Chi-Huey Wong, Dale G. Drueckhammer, and Henri M. Sweers, “Enzymatic vs. fermentative synthesis: thermostable glucose dehydrogenase catalyzed regeneration of NAD(P)H for use in enzymatic synthesis”, Journal of the American Chemical Society (JACS). 1985, 107(13), 4028-4031.
CAS Registry “2,3′-Dicloroacetophenone [21886-56-6]” and “2-Chloroacetophenone [532-27-4]” , accessed Jul. 1, 2008, 3 pages.
Gröger, H., et al “Practical Asymmetric Enzymatic Reduction through Discovery of a Dehydrogenase-Compatible Biphasic Reaction Media” Org. Lett.; 2003; 5(2), pp. 173-176 + Supporting Information (2 pages).
Andersson, Mats, Hans Holmberg, and Patrick Adlercreutz, “Evaluation of Alcaligenes eutrophus Cells as an NADH Regenerating Catalyst in Organic-Aqueous Two-Phase System,” Biotechnol. Bioeng., vol. 57, pp. 79-86, 1998.
Bommarius, Andreas S., et al., “Synthesis and Use of Enantiomerically Pure tert-Leucine,” Tetrahedron Asymmetry, vol. 6, 1995, pp. 2851-2888.
De Carvalho, Carla C.C.R., and M. Manuela R. Da Fonseca, “Maintenance of cell viability in the biotransformation of (-)-carveol with whole cells ofRhodococcus erythropolis,” J. Mol. Catalysis B: Enzymatic, No. 19-20, Dec. 2002, pp. 389-398.
Gröger, H., et al., “Practical Asymmetric Enzymatic Reduction through Discovery of a Dehydrogenase-Compatible Biphasic Reaction Media,” Organic Letters, vol. 5, No. 2, Jan. 2003, pp. 173-176.
Jonsson, A., et al., “Thermodynamic and kinetic aspects on water vs. organic solvent as reaction media in the enzyme-catalysed reduction of ketones,” Biochimica et Biophysica Acta, vol. 1430, No. 2, Mar. 1999, pp. 313-322.
Kato, T., et al., “An Enzymatic Cycling Method for Nicotinamide-Adenine Dinucleotide with Malic and Alcohol Dehydrogenases,” Analytical Biochemistry, vol. 53, No. 1, May 1973, pp. 86-97.
Kato, Takahiko and Yoshiyuki Suzuki, “Enzymatic Determination of Galactosylceramide Galactosidase in Tissues by NAD Cycling,” Analytical Biochemistry, vol. 126, No. 1, Oct. 1982, pp. 44-51.
Liese, A., “A novel reactor concept for the enzymatic reduction of poorly soluble ketones,” J. Mol. Catalysis B: Enzymatic, vol. 4, No. 1/2, Jan. 1998, pp. 91-99.
Orlich, Bernhard and Reinhard Schomaecker, “Enzymatic Reduction of a Less Water-Soluble Ketone in a Reverse Micelles with NADH Regeneration,” vol. 65, No. 3, Nov. 1999, pp. 357-362.
Schmid, Andreas, et al., “Preparative regio- and chemoselective functionalization of hydrocarbons catalyzed by cell free preparations of 2-hydroxybiphenyl 3-monooxygenase,” J. Mol. Catalysis B: Enzymatic, vol. 11, No. 4-6, Jan. 2001, pp. 455-462.
Written Opinion of the International Searching Authority for PCT/EP2004/002726 filed Mar. 17, 2004.
International Preliminary Report on Patentability for PCT/EP2004/002726 filed Mar. 17, 2004.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Coupled cofactor-dependent enzymatic reaction systems in... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coupled cofactor-dependent enzymatic reaction systems in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupled cofactor-dependent enzymatic reaction systems in... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4139398

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.