申请人:Kyowa Hakko Bio Co., Ltd.
公开号:EP2143786A1
公开(公告)日:2010-01-13
The present invention provides a microorganism having an ability to produce a protein having a dipeptide synthesizing activity and in which an activity of a protein to transport a dipeptide in a microbial cell to the outside of the microbial cell (hereinafter to be referred to as a dipeptide transporting activity) is higher than that of a parental strain, wherein said protein having a dipeptide transporting activity is described in any of the following [1] to [3]:
[1] a protein having an amino acid sequence shown by any of SEQ ID NOs: 6 to 10
[2] a protein having an amino acid sequence wherein one or more amino acids are deleted, substituted or added in the amino acid sequence shown by any of SEQ ID NOs: 6 to 10, and having a dipeptide transporting activity,
[3] a protein having an amino acid sequence having 80% or more homology with the amino acid sequence shown by any of SEQ ID NOs: 6 to 10, and having a dipeptide transport activity, and a process of producing dipeptide using the microorganism.
本发明提供了一种微生物,该微生物具有产生具有二肽合成活性的蛋白质的能力,并且其中的蛋白质将微生物细胞内的二肽转运到微生物细胞外的活性(以下称为二肽转运活性)高于亲本菌株,其中所述具有二肽转运活性的蛋白质在以下[1]至[3]中任一项中描述:
[1] 具有 SEQ ID NOs: 6 至 10 中任意一个所示氨基酸序列的蛋白质
[2]一种具有氨基酸序列的蛋白质,其中一个或多个氨基酸在 SEQ ID NO:6 至 10 中任一个所示的氨基酸序列中被删除、取代或添加,并具有二肽转运活性、
[3] 一种蛋白质,其氨基酸序列与 SEQ ID NOs: 6 至 10 中任意一个所示的氨基酸序列具有 80% 或以上的同源性,并具有二肽转运活性,以及一种使用该微生物生产二肽的工艺。