Patent · US Active

Phytase variants YeAPPA having improved gastric protein resistance and acid resistance, and increased catalytic efficiency

US11155793B2 · kind B2 · utility

0Cited by

1References

6Claims

0Family size

Inventors

Canfang Niu · Beijing, CN
Peilong Yang · Beijing, CN
Bin Yao · Nanhu, CN
Yangyang Li · Qingdao, CN
Yongkai Du · Beijing, CN
Huiying Luo · Beijing, CN
Huoqing Huang · Beijing, CN
Yaru Wang · Beijing, CN

Key dates

Filing date	Jan 15, 2018
Grant date	Oct 26, 2021
Priority date	—
Expiry date	Jan 15, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12Y301/03008
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

The present invention relates to the field of genetic engineering, particularly to phytase variant YeAPPA having improved pepsin resistance and acid resistance, and increased catalytic efficiency, by substituting Leucine at the 162th site of the sequence set forth in SEQ ID NO.1 with glycine or proline or substituting glutamic acid at the 230th site of the sequence set forth in SEQ ID NO.1 with glycine, proline or arginine, in the benefit of the development of economical feed enzyme industry.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.