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Expired Canadian patentCanada

C-terminal .alpha.-amidating enzyme and process for production thereof

CA 1337860 C · Owner: Kojima, Masayasu · Inventors: Matsuo, Hisayuki; Mizuno, Kensaku; Kojima, Masayasu

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Abstract From the Canadian patent

A C-terminal .alpha.-amidating enzyme of porcine origin having the following properties: (1) Action and substrate specificity: acting on a peptide or protein represented by the formula, X-R-Gly wherein Gly represents a C-terminal glycine residue R represents an, amino acid residue to be .alpha.-amidated and X represents a remaining portion of the peptide or protein to convert it to a peptide or protein represent by the formula X-R-NH2 wherein R-NH2 represents a C-terminal .alpha.-amidated amino acid residue and X represents a residual portion of the peptide or protein; (2) optimum pH: 6.5 to 8.5; (3) molecular weight: about 92,000 as determined by SDS-polyacrylamide gel electrophoresis; and …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted January 2, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 14, 1989
GrantedJanuary 2, 1996
Term endedJanuary 2, 2013
Patent numberCA 1337860 C
Classification (IPC)C12N9/02

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMarch 14, 1989Patent grantedJan 2, 1996Term endedJan 2, 2013

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.