摘要:
Improved vectors and methods for expressing cloned genes of prokaryotic or eukaryotic origin and methods of making such vectors are disclosed, the improved vectors comprising promoters and operators from λ phages and preferably do not include an active cro gene or an active N gene, the vectors having at least one endonuclease recognition site forcloning desired genes less than about 300 base pairs from the promoters and operators and being useful, as are methods utilizing the vectors, in producing a wide variety of prokaryotic, eukaryotic and viral polypeptides, hormones, enzymes, antigens, proteins and amino acids.
摘要:
DNA sequences, recombinant DNA molecules and hosts transformed with them which produce polypeptides displaying a biological or immunological activity of human interleukin 2, the genes coding for these polypeptides and methods of making and using these DNA sequences, molecules, hosts, genes and polypeptides. The DNA sequences are characterized in that they code for a polypeptide displaying a biological or immunological activity of human interleukin 2. In appropriate hosts these DNA sequences and recombinant DNA molecules permit the production and identifiation of genes and polypeptides displaying a biological or immunological activity of human interleukin 2 and their use in immunotherapeutic agents and methods and in the establishment and longterm proliferation of T-cells.