Phytase mutant
AssigneeQingdao Vland Biotech Group Co., Ltd.
InventorsXiuxiu Wu, Xinpei Li, Rui Li, Qingqing Song, Yijun Huang
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Abstract
Provided are a phytase mutant and a coding DNA molecule thereof, a vector, and a host cell. The phytase mutant comprises an amino acid sequence having at least 90% identity with SEQ ID NO: 3, and compared with SEQ ID NO: 3, and contains an amino acid substitution at at least one position selected from the group consisting of 36, 126, 211, 253, 258, and 266. The heat resistance of the mutant is significantly improved, thus facilitating the wide application of phytase in feed.
Claims9
A phytase mutant, wherein the mutant comprises an amino acid sequence having at least 90% identity with SEQ ID NO:
- 3, and comprises an amino acid substitution of Q253 Y.
Dependencies are inferred from the claim text.