Eniricerche S.p.a.

Elisabetta Franchi

Guido Grandi

Federico Maisano

Paola Cosmina

Marina Del Bue

Silvia Astrua Testori

Silvia A Testori

The description relates to a plasmid vector expression in Bacillus and used for cloning the structural gene which codes for the human growth hormone, a recombinant DNA molecule comprising plasmid vector and the structural gene of the human growth hormone and a method of preparing the hormone comprising inserting the recombinant DNA molecule into strains of Bacillus and cultivating the resulting transformed strains in a suitable culture environment and recovering the thus-synthesized hormone from the cells.

Plasmid vector for expression in bacillus and used for cloning the

A hybrid plasmid which is capable of inducing the expression and the secretion of human growth hormone (hGH) in its natural form and a method for the preparation of hGH which comprises the culture in a suitable environment of Bacillus subtilis cells transformed by the hybrid plasmid, are described. The hGH thus obtained has the correct amino acid sequence and is particularly useful for treatment of man.

Method for the preparation of human growth hormone

An improved method is described for the preparation of natural human growth hormone (hGH) in pure form, which comprises the preparation of a precursor of hGH by means of the culture of Bacillus subtilis cells transformed by a hybrid plasmid, the separation of the precursor from the total proteins, the digestion of the precursor with the enzyme Factor Xa and finally the purification of the natural hGH thus obtained from the enzymatic hydrolysis mixture.

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Milan, Italy

Elisabetta Franchi