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. 02, 2021
Filed:
Feb. 28, 2019
Mitsubishi Chemical Corporation, Tokyo, JP;
Fujio Yu, Tokyo, JP;
Wataru Mizunashi, Tokyo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
It is intended to provide an efficient method for expressing a protein of interest as an active soluble recombinant protein in a transformant. The present invention provides a method for producing an enzyme having improved activity per recombinant as compared with a reference form, comprising the steps of: (1) preparing recombinants each expressing a mutant having an amino acid sequence derived from the amino acid sequence of the reference form by the substitution of one or more cysteine residues by other amino acid residues; (2) selecting a plurality of mutants that exhibit 50% or more activity per recombinant relative to 100% activity of the reference form; and (3) expressing a mutant in which corresponding amino acid residues are substituted at two or more positions among the respective positions of the substituted amino acid residues of the mutants selected in step (2).