| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | 一种定点突变改造的酵母二肽基肽酶III | CN201510908511.8 | 2015-12-09 | CN105368806A | 2016-03-02 | 刘大岭; 姚冬生; 吴曦阳; 谢春芳 |
| 本发明涉及一种定点突变改造的酵母二肽基肽酶III。本发明所述的定点突变改造的酵母二肽基肽酶III，其特征在于：它是由氨基酸序列为SEQ ID NO.1的来源于Saccharomyces cerevisiae S288c的酵母二肽基肽酶III中制造多个氨基酸取代而产生的突变体，所述的氨基酸取代包括第570、572、574位的取代，以致所述定点突变改造的酵母二肽基肽酶III为对6-甲氧基双呋喃香豆素具有氧化分解作用的酶。本发明所述的定点突变改造的酵母二肽基肽酶III可应用于制备饲料及其添加剂或食品及其添加剂中消除6-甲氧基双呋喃香豆素的产品，还可应用于制备预防由6-甲氧基双呋喃香豆素诱发的疾病的药物。 | ||||||
| 2 | SITE-SPECIFIC MUTAGENESIS MODIFIED YEAST DIPEPTIDYL PEPTIDASE III | US15780903 | 2016-11-28 | US20190246664A1 | 2019-08-15 | Daling LIU; Dongsheng YAO; Xiyang WU; Chunfang XIE |
| The invention relates to a site-specific mutagenesis modified yeast dipeptidyl peptidase III. The yeast dipeptidyl peptidase III is an isolated mutant produced by making a plurality of amino acid substitutions in a wild type yeast dipeptidyl peptidase III derived from Saccharomyces cerevisiae S288c having an amino acid sequence of SEQ ID NO. 1, said amino acid substitutions comprising substitutions at positions 570, 572 and 574, so that the site-specific mutagenesis modified yeast dipeptidyl peptidase III is an enzyme having an oxidative decomposition activity on 6-methoxy-bifuran coumarin. The site-specific mutagenesis modified yeast dipeptidyl peptidase III can be used in preparation of a feed and additives thereof, and a food and additives thereof, in which 6-methoxy difuran coumarin is eliminated, and can be used in preparation of a medicament for preventing diseases induced by 6-methoxy-difuran coumarin. | ||||||
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