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:
Aug. 18, 1998
Applicant:
Inventor:
Ying-Chieh Tsai, Taipei, TW;
Assignee:
National Science Council, Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N / ; C12N / ; C12N / ; C12S / ;
U.S. Cl.
CPC ...
435221 ; 435 691 ; 435220 ; 43525231 ; 4353201 ; 435471 ; 435267 ; 536 232 ;
Abstract
The invention provides a group of subtilisin YaB mutants, which are obtained by the substitution of the glycine residues at the 124, 151 and 159 positions of wild type subtilisin YaB with other amino acid residues by site directed mutagenesis. The subtilisin YaB mutants have special substrate specificity and relatively higher elastin/casein hydrolyzing activity. The subtilisin YaB mutants can be used in various aspects such as the quality improvement of meat and the protein processing for foodstuff and feedstuff. Moreover, the invention also includes the nucleic acid sequences encoding such enzyme mutants and the uses of such enzyme mutants.