The Upjohn Co.

The Upjohn Manufacturing Company

Vedpal S Malik

Fritz Reusser

John H Coats

Malcolm E Bergy

A process for cloning DNA into a suitable host, which comprises fragmenting said DNA to obtain fragmented DNA, ligating said fragmented DNA into a suitable vector to obtain chimeric (hybrid) DNA, and transforming said chimeric DNA into said ultimate host. By this process, the useful chemical plasmid pUC3, which is obtainable from a biologically pure culture of the microorganism Streptomyces sp. 3022a, NRRL 11441, is cloned into the well-known bacterium E. coli HB101. This cloning of pUC3 into E. coli HB101 enables the production of large amounts of plasmid pUC3 DNA. pUC3 is useful as a cloning vehicle in recombinant DNA work. For example, using recombinant DNA methodology, a desired gene, for example, the insulin gene, can be inserted into pUC3 and the resulting plasmid can then be transformed into a suitable host microbe which, upon culturing, produces the desired insulin.

Hybrid plasmid of pBR322 and Streptomyces plasmid and E. coli containing

Microbiological process for preparing the antibiotic lincomycin at temperatures ranging from 18.degree. C. to 45.degree. C. using the newly discovered microorganism Streptomyces vellosus. The subject process advantageously results in the preparation of lincomycin without the concomitant production of lincomycin B (4'-depropyl-4'-ethyllincomycin). The absence of lincomycin B production results in increased lincomycin recovery efficiency.

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Kalamazoo, MI, United States of America

Vedpal S Malik