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

Phytase expression systems and methods of making and using them

Patent 7232677 Issued on June 19, 2007. Estimated Expiration Date: Icon_subject February 5, 2021. 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.

Patent References

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Inventors

Assignee

Application

No. 09777566 filed on 02/05/2001

US Classes:

435/196, Acting on ester bond (3.1)435/320.1, VECTOR, PER SE (E.G., PLASMID, HYBRID PLASMID, COSMID, VIRAL VECTOR, BACTERIOPHAGE VECTOR, ETC.) BACTERIOPHAGE VECTOR, ETC.)435/69.1, Recombinant DNA technique included in method of making a protein or polypeptide435/19, Involving esterase435/252.3, Transformants (e.g., recombinant DNA or vector or foreign or exogenous gene containing, fused bacteria, etc.)435/325, ANIMAL CELL, PER SE (E.G., CELL LINES, ETC.); COMPOSITION THEREOF; PROCESS OF PROPAGATING, MAINTAINING OR PRESERVING AN ANIMAL CELL OR COMPOSITION THEREOF; PROCESS OF ISOLATING OR SEPARATING AN ANIMAL CELL OR COMPOSITION THEREOF; PROCESS OF PREPARING A COMPOSITION CONTAINING AN ANIMAL CELL; CULTURE MEDIA THEREFORE435/410, PLANT CELL OR CELL LINE, PER SE (E.G., TRANSGENIC, MUTANT, ETC.); COMPOSITION THEREOF; PROCESS OF PROPAGATING, MAINTAINING, OR PRESERVING PLANT CELL OR CELL LINE; PROCESS OF ISOLATING OR SEPARATING A PLANT CELL OR CELL LINE; PROCESS OF REGENERATING PLANT CELLS INTO TISSUE, PLANT PART, OR PLANT, PER SE, WHERE NO GENOTYPIC CHANGE OCCURS; MEDIUM THEREFORE435/411, Tomato cell or cell line, per se435/412, Corn cell or cell line, per se435/414, Tobacco cell or cell line, per se435/415, Soybean cell or cell line, per se435/416, Sunflower cell or cell line, per se435/417, Potato cell or cell line, per se435/21, Involving phosphatase435/195, Hydrolase (3. )536/23.2, Encodes an enzyme536/23.7, Encodes a microbial polypeptide530/350, PROTEINS, I.E., MORE THAN 100 AMINO ACID RESIDUES424/442Animal food

Examiners

Primary: Ramierz, Delia M.

Attorney, Agent or Firm

Foreign Patent References

  • 0 282 042 EP 06/01/1994
  • 0 897 985 EP 02/01/1999
  • 2316082 GB 02/01/1998
  • 99086028 KR 12/01/1999
  • WO-97/33976 WO 09/01/1997
  • WO-98/44125 WO 10/01/1998
  • WO 99/08539 WO 02/01/1999
  • WO-00/58481 WO 10/01/2000
  • WO 00/64247 WO 11/01/2000
  • WO-00/71728 WO 11/01/2000
  • WO-01/90333 WO 11/01/2001

International Classes

C07H 21/04
C12N 15/00
C12N 5/10
C12N 1/21
C12N 9/14
C12N 9/16
C12Q 1/42
C12Q 1/44

Abstract

The invention provides a purified or recombinant phytase enzyme (SEQ ID NO:2) initially derived from Escherichia coli B. The enzyme has a molecular weight of about 47.1 kilodaltons and has phytase activity (SEQ ID NO:2). The enzyme can be produced from native or recombinant host cells and can be used to aid in the digestion of phytate where desired. In particular, the phytase of the present invention can be used in foodstuffs to improve the feeding value of phytate rich ingredients.

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