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The methods of protoplast formation and transformation of Streptomyces strains

Furs, A.R.; Orekhov, A.V.

Antibiotiki i Khimioterapiia 33(3): 180-185

1988

ISSN/ISBN: 0235-2990
PMID: 3288155
Document Number: 308777
Factors influencing formation, regeneration and transformation of protoplasts in streptomyces are described. Conditions for formation and regeneration of protoplasts in 4 industrial strains producing the macrolide antibiotic tylosin were studied. It was demonstrated possible to apply the method for transformation of the S. lividans type culture to 3 industrial strains of S. griseus producing grisin, an antibiotic used as a feed additive. Potential increasing of the efficiency of protoplast transformation and transfection in various actinomycetous strains including industrial ones is discussed. The stimulating effect of lyposomes on transformation of protoplasts in S. lividans 66 with DNA of plasmids pVG101 and pIJ350 as well as transfection with DNA of phages SH10 and KS404 was shown. The tylosin resistance genes in S. fradiae strain B45 were cloned which enabled isolating the cluster of the genes participating in tylosin biosynthesis.

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