The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1999
Filed:
May. 22, 1997
Japan Energy Corporation, Tokyo, JP;
Abstract
Disclosed are hirudin analogs, a method of manufacture thereof, and anticoagulant compositions containing the same. Sequences Asp.sup.33 -Gly.sup.34 or Asp.sup.62 -Ala.sup.63 of naturally-occurring hirudins or their analogs were substituted as disclosed to suppress the formation of succinimide- or beta- forms, thereby yielding hirudin analogs with high stability, high anti-thrombin activity, and therapeutic potential as anticoagulants. Hirudin analogs having Val.sup.1 -Val.sup.2 of naturally-occurring hirudin substituted with Ile.sup.1 -Ile.sup.2 are preferred for their high antithrombiin activity. The invention also provides DNAs encoding the amino acid sequence of hirudin analogs, expression vectors, recombinant microogranisms, and a method of manufacturing hirudin analogs using recombinant microorganisms.