Genetic process for the preparation of antibiotic-producer
micromonospora strains
    5.
    发明授权
    Genetic process for the preparation of antibiotic-producer micromonospora strains 失效
    用于制备抗生素 - 微生物菌株的遗传过程

    公开(公告)号:US4294927A

    公开(公告)日:1981-10-13

    申请号:US92554

    申请日:1979-11-08

    IPC分类号: C12N15/03 C12N15/00

    摘要: The invention provides a process for the preparation of antibiotic-producer Micromonospora strains having modified genetic material, wherein a protoplast suspension is prepared with lysozyme, under osmotically buffered conditions ensured by sucose, from each culture of the two genetically marked mutants of the antibiotic-producer Micromonospora strain following cultivation in a glycine medium, both suspensions obtained are combined in the presence of polyethylene glycol, and incubated at room temperature, the resulting fused protoplasts are suspended in soft agar, then plated on an agar plate containing sucrose, prolin and inorganic salts, incubated for 20 to 30 days, and finally all mutants are selected from the regenerated colonies which are sure to have genetic material different from that of the parent strains.The process can be advantageously applied to improve productivity of antibiotic-producer strains having industrial importance.

    摘要翻译: 本发明提供了一种用于制备具有修饰遗传物质的抗生素 - 生产物单孢菌菌株的方法,其中在抗生素生产者的两个遗传标记的突变体的每个培养物中,在通过sucose保证的渗透缓冲条件下,用溶菌酶制备原生质体悬浮液 在甘氨酸培养基中培养后的微单孢菌菌株,将得到的两种悬浮液在聚乙二醇存在下合并,并在室温下温育,将得到的融合原生质体悬浮在软琼脂中,然后铺在含有蔗糖,脯氨酸和无机盐 ,孵育20至30天,最后所有突变体选自再生菌落,其确保具有与亲本菌株不同的遗传物质。 该方法可以有利地应用于提高具有工业重要性的抗生素 - 生产菌株的生产力。