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:
Aug. 05, 2025
Filed:
Feb. 11, 2020
Qingdao Vland Biotech Group Co., Ltd, Shandong, CN;
Xiuxiu Wu, Shandong, CN;
Yijun Huang, Shandong, CN;
Yang Liu, Shandong, CN;
Xia Zhang, Shandong, CN;
Sida Cheng, Shandong, CN;
QINGDAO VLAND BIOTECH GROUP CO., LTD, Shandong, CN;
Abstract
The present invention relates to the technical field of biology, in particular to a phytase mutant, a preparation method therefor and an application thereof, a DNA molecule encoding the phytase mutant, a vector, and a host cell. The mutant provided by the present invention contains the substituent of an amino acid at at least one position selected from the following group: 36, 69, 89, 91, 111, 202, 213, 225, 238, 243, 253, 258, and 266. The heat resistance of the mutant is significantly improved, thereby facilitating the wide application of the phytase in feed.