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    • 2. 发明授权
    • DNA encoding ACV synthetase
    • 编码ACV合成酶的DNA
    • US06258555B1
    • 2001-07-10
    • US08909108
    • 1997-08-11
    • Martin Karl Russell BurnhamAlison Jane EarlJohn Henry BullDavid John SmithGeoffrey Turner
    • Martin Karl Russell BurnhamAlison Jane EarlJohn Henry BullDavid John SmithGeoffrey Turner
    • C12P3700
    • C12N9/93C12P37/00
    • DNA encoding the gene for the synthetase enzyme capable of generating &dgr; (L-a-aminoadipyl)-L-crysteinyl-D-valine (ACV) from its constituent amino acids was obtained from several penicillin and cephalosporin producing organisms, e.g. Penicillium chrysogenum, cephalosporium and a Flavobacterium species. The DNA was used to prepare recombinant vectors comprising the ACV synthetase gene and hosts transformed with such vectors. The ACV synthetase gene can form part of a gene cluster comprising other genes involved in -&bgr;-lactam biosynthesis and the production of penicillin by expression of the entire biosynthetic gene cluster for the synthesis of penicillin from primary amino acids is described. Suitable hosts in which expression can take place include heterologous hosts which are naturally non-producers of penicillin.
    • 编码能够从其组成氨基酸产生δ(L-α-氨基己二酰基)-L-结晶乙酰-D-缬氨酸(ACV)的合成酶的基因的DNA从几种青霉素和头孢菌素生产生物获得,例如, 产黄青霉,头孢菌属和黄杆菌属。 使用该DNA制备包含ACV合成酶基因的重组载体和用这些载体转化的宿主。 ACV合成酶基因可以形成包含参与β-内酰胺生物合成的其他基因的基因簇的一部分,并且通过用于从初级氨基酸合成青霉素的整个生物合成基因簇的表达来产生青霉素。 可以进行表达的合适的宿主包括天然非青霉素生产者的异源宿主。