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:
Feb. 09, 1993
Filed:
Apr. 16, 1991
Applicant:
Inventors:
Naoko Tanigaki, Tsuruga, JP;
Kayoko Furukawa, Tsuruga, JP;
Yukihiro Sogabe, Tsuruga, JP;
Shigenori Emi, Tsuruga, JP;
Assignee:
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ;
U.S. Cl.
CPC ...
435191 ; 435830 ;
Abstract
A new thermostable xanthine oxidase obtained from a microbe belonging to the genus Arthrobacter and a method of its production are disclosed. The present invention affords a xanthine oxidase which is excellent in thermal stability and which retains at least 70% residual activity after heat treatment at 60.degree. C. for 30 minutes. Arthrobacter luteus ATCC 21606 is the preferred microbe. The enzyme has a molecular weight of about 160,000 daltons as determined by gel filtration and a pH optimum of about 7.5.