Patents by Inventor Dali YU

Dali YU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Phytase variants YkAPPA having improved pepsin resistance and increased catalytic efficiency
    Patent number: 11028377
    Abstract: The present invention relates to the field of genetic engineering, particularly to phytase variants YkAPPA having amino acid sequence substituting Leucine at the 162th site of the sequence set forth in SEQ ID NO.1 with glycine or proline, or having amino acid sequence substituting glutamic acid at the 230th site of the sequence set forth in SEQ ID NO.1 with glycine, alanine, serine, threonine, aspartic acid, proline, or arginine, and having improved pepsin resistance and increased catalytic efficiency of 2.1 times of that of the wild phytase, in the benefit of the development of economical feed enzyme industry.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: June 8, 2021
    Assignee: FEED RESEARCH INSTITUTE CHINESE ACADEMY OF AGRICUT
    Inventors: Canfang Niu, Peilong Yang, Bin Yao, Yangyang Li, Dali Yu, Huiying Luo, Huoqing Huang, Yaru Wang
  • PHYTASE VARIANTS YKAPPA HAVING IMPROED PEPSIN RESISTANCE AND INCREASED CATALYTIC EFFICIENCY
    Publication number: 20200277583
    Abstract: The present invention relates to the field of genetic engineering, particularly to phytase variants YkAPPA having amino acid sequence substituting Leucine at the 162th site of the sequence set forth in SEQ ID NO.1 with glycine or proline, or having amino acid sequence substituting glutamic acid at the 230th site of the sequence set forth in SEQ ID NO.1 with glycine, alanine, serine, threonine, aspartic acid, proline, or arginine, and having improved pepsin resistance and increased catalytic efficiency of 2.1 times of that of the wild phytase, in the benefit of the development of economical feed enzyme industry.
    Type: Application
    Filed: January 15, 2018
    Publication date: September 3, 2020
    Inventors: Canfang NIU, Peilong YANG, Bin YAO, Yangyang LI, Dali YU, Huiying LUO, Huoqing HUANG, Yaru WANG