D-amino acid aminotransferase for simultaneously producing glutaryl-7-aminocephalosporanic acid and D-amino acid
    2.
    发明授权
    D-amino acid aminotransferase for simultaneously producing glutaryl-7-aminocephalosporanic acid and D-amino acid 失效
    同时生产戊二酰-7-氨基头孢烷酸和D-氨基酸的D-氨基酸氨基转移酶

    公开(公告)号:US06337190B1

    公开(公告)日:2002-01-08

    申请号:US09466257

    申请日:1999-12-17

    IPC分类号: C12N900

    CPC分类号: C12N9/1096 C12P35/04

    摘要: The present invention relates to mutant D-amino acid aminotransferase, including nucleic acids encoding mutant D-amino acid aminotransferase. The mutant D-amino acid aminotransferase of the present invention is obtained by the substitution of the glutamate residue at position 13 of wild type D-amino acid aminotransferase from Bacillus sphaericus with hydrophobic amino acids. The mutant D-amino acid aminotransferase can be used in the production of D-amino acid and the conversion of glutaryl-7-aminocephalosporanic acid from cephalosporin C. The present invention also includes replica-paper staining method for screening the cells expressing high DAT activity.

    摘要翻译: 本发明涉及突变型D-氨基酸氨基转移酶,包括编码突变型D-氨基酸氨基转移酶的核酸。 通过用疏水性氨基酸取代来自球形芽孢杆菌的野生型D-氨基酸氨基转移酶的13位的谷氨酸残基获得本发明的突变型D-氨基酸氨基转移酶。 突变型D-氨基酸氨基转移酶可用于D-氨基酸的生产和戊二酰-7-氨基头孢菌酸从头孢菌素C的转化。本发明还包括用于筛选表达高DAT活性的细胞的复制纸染色方法 。

    Swine vesicular disease virus expression vectors
    3.
    发明授权
    Swine vesicular disease virus expression vectors 失效
    猪水疱病病毒表达载体

    公开(公告)号:US06616929B1

    公开(公告)日:2003-09-09

    申请号:US09684546

    申请日:2000-10-06

    IPC分类号: A61K3912

    摘要: The invention relates to nucleic acids containing a nucleotide sequence encoding a polypeptide, the polypeptide having (1) the P2 and P3 regions of a swine vesicular disease virus polyprotein, and (2) an amino acid sequence heterologous to the polyprotein. The invention also includes methods of preparing such nucleic acids (e.g., RNA or DNA expression vectors) and methods of using such nucleic acids to express RNA or protein.

    摘要翻译: 本发明涉及含有编码多肽的核苷酸序列的核酸,所述多肽具有(1)猪水疱病病毒多蛋白的P2和P3区,和(2)与多蛋白异源的氨基酸序列。 本发明还包括制备此类核酸(例如RNA或DNA表达载体)的方法以及使用此类核酸来表达RNA或蛋白质的方法。