U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Phytase

Patent 5830732 Issued on November 3, 1998. Estimated Expiration Date: Icon_subject July 3, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Inventors

Assignee

Application

No. 498263 filed on 07/03/1995

US Classes:

435/195, Hydrolase (3. )435/69.1, Recombinant DNA technique included in method of making a protein or polypeptide435/252.3, Transformants (e.g., recombinant DNA or vector or foreign or exogenous gene containing, fused bacteria, etc.)435/320.1, VECTOR, PER SE (E.G., PLASMID, HYBRID PLASMID, COSMID, VIRAL VECTOR, BACTERIOPHAGE VECTOR, ETC.) BACTERIOPHAGE VECTOR, ETC.)530/350, PROTEINS, I.E., MORE THAN 100 AMINO ACID RESIDUES536/23.2, Encodes an enzyme536/23.7Encodes a microbial polypeptide

Examiners

Primary: Wax, Robert A.
Assistant: Saidha, Tekchand

Attorney, Agent or Firm

Foreign Patent References

  • 0 420358 A1 EP. 04/13/1991
  • 0 321004 B1 EP. 01/13/1992
  • 93/16175 WO. 08/13/1993
  • 94/03612 WO. 02/13/1994
  • WO94/03072 WO. 02/13/1994

International Classes

C12N 009/14
C12P 021/06
C07H 021/04
C07K 001/00

Foreign Application Priority Data

1994-07-05 JP

Abstract

A novel phytase is disclosed. The phytase consists essentially of a single type of subunits, and can hydrolyze a phytate to myo-inositol. A gene encoding the phytase, which is originated from Schwanniomyces occidentalis is also disclosed.

Other References

  • Nayini et al, The Phytase of Yeast, Lebensmittel Wissenschaft und Technologie, vol. 17, No. 1, 1984, pp. 24-26 (XP-002054007)
  • Lambrechts et al, "Utilization of Phytase by Some Yeasts", Biotechnology Letters, vol. 14, No. 1, 1 Jan. 1992, pp. 61-66 (XP-002053185)
  • Segueilha et al, "Reduction of Phytate Content in Wheat Bran and Glandless Cotton Flour by Schwanniomyces castellii", Journal of Agricultural and Food Chemistry, vol. 41, No. 12, Dec. 1993, pp. 2451-2454 (XP-002053184)
  • Sequeilha et al, "Purification and Properties of the Phytase from Schwanniocyces castelli", Journal of Fermentation and Bioengineering, vol. 74, No. 1, 1992, pp. 7-11 (XP-002053183)
  • Yamada et al, "Production, Purification and Some General Properties of the Enzyme", Agricultural and Biological Chemistry, vol. 32, No. 7, Jul. 1968, pp. 1275-1282 (XP-002053182)
  • Greiner et al, "Purification and Characterization of Two Phytases from Escherichia Coli", Archives of Biochemistry and Biophysics, vol. 303, No. 1, pp. 107-113, 1993
  • Houde et al, "Purification and Characterization of Canola Seed (Brassica sp.) Phytase", Journal of Food Biochemistry, vol. 14, pp. 331-351, 1990
  • Yamamoto et al, "Chemical and Physicochemical Properties of Phytase from Aspergillus Terreus", Agri. Biol. Chem., vol. 36, No. 12, pp. 2097-2103, 1972
  • Hayakawa et al, "Purification and Characterization of Acid Phosphatases with or without Phytase Activity from Rice Bran", Agri Biol. Chem., vol. 53, No. 6, pp. 1475-1483, 1989
  • N.C. Mandal et al., Phytochemistry, vol. 11: pp. 495-502 (1972)
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  • Varsha Shah et al., Indian Journal of Biochemistry and Biophysics, vol. 27: pp. 98-102 (1990)
  • Abul H.J. Ullah et al., Preparative Biochemistry, vol. 17(1): pp. 63-91 (1987)
  • P. Galzy et al., J. Fermentation Bioengineering, vol. 74, 1: pp. 7-11 (1992)
  • E. Graf et al., J. Am. Oil. Chem. Soc., vol. 60, No. 11: pp. 1861-1867 (1983)
  • Abul H.J. Ullah et al., Preparative Biochemistry, vol. 18(4): pp. 483-489 (1988)
  • Kregerm van Rij et al., the yeast, a taxonomic study, 3rd ed. Elsevier Sci. Publisher, Amsterday, The Netherlands (1984)
  • List of Culture Microorganisms, 9th ed.: Institute for Fermentation Osaka (IFO), pp. 75-76 (1992)
  • Ito, H., et al., J. Bacteriol., 153: pp. 163-168 (1983
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