Abstract: The present invention relates to methods and compositions for the identification and/or assessment of protein/protein interactions, and in particular to methods and compositions for accomplishing the high-throughput detection of interactions of proteins displayed on the surfaces of lambdoid bacteriophage particles.

Abstract: The invention relates to constructs capable of infecting mammalian cells comprising at least one semi-purified or pure SV40 capsid protein and a constituent selected from the group consisting of an exogenous DNA, a vector comprising an exogenous DNA, an exogenous RNA, a vector comprising an exogenous RNA, an exogenous protein or peptide product, and antisense RNA, ribozyme RNA or any RNA or DNA which inhibits or prevents the expression of undesired protein(s) in the mammalian cell and optionally further comprising operatively linked regulatory elements sufficient for the expression and/or replication of the exogenous protein in a mammalian cell. The invention further relates to a method for the in vitro construction of SV40 virus or pseudovirus constructs according to the invention.

Abstract: An improved vector upon introduction into a suitable bacterial host containing the thermolabile repressor C.sub.I renders the host cell capable, upon increasing the temperature of the host cell to a temperature at which the repressor is destroyed, of effecting expression of a desired gene inserted into the vector and production of polypeptide encoded by the gene. The vector is a double-stranded DNA molecule which includes in 5' to 3' order the following: a DNA sequence which contains the promoter and operator P.sub.L O.sub.

Abstract: A plasmid for the production of superoxide dismutase or an analog thereof which upon introduction into a suitable bacterial host containing the thermolabile repressor C.sub.I renders the host cell capable, upon increasing the temperature of the host cell to a temperature at which the repressor is destroyed, of effecting expression of DNA encoding superoxide dismutase and production of superoxide dismutase. The plasmid is a double-stranded DNA molecule which includes in 5' to 3' order the following: a DNA sequence which contains the promoter and operator P.sub.L O.sub.

Abstract: An improved vector upon introduction into a suitable bacterial host containing the thermolabile repressor C.sub.I renders the host cell capable, upon increasing the temperature of the host cell to a temperature at which the repressor is destroyed, of effecting expression of a desired gene inserted into the vector and production of polypeptide encoded by the gene. The vector is a double-stranded DNA molecule which includes in 5' to 3' order the following: a DNA sequence which contains the promoter and operator P.sub.L O.sub.

Abstract: A plasmid for the production of porcine growth hormone or an analog thereof which upon introduction into a suitable bacterial host containing the thermolabile repressor C.sub.I renders the host cell capable, upon increasing the temperature of the host cell to a temperature at which the repressor is destroyed, of effecting expression of DNA encoding porcine growth hormone and production of porcine growth hormone or analogs thereof.

Abstract: An improved vector upon introduction into a suitable bacterial host containing the thermolabile repressor C.sub.I renders the host cell capable, upon increasing the temperature of the host cell to a temperature at which the repressor is destroyed, of effecting expression of a desired gene inserted into the vector and production of polypeptide encoded by the gene. The vector is a double-stranded DNA molecule which includes in 5' to 3' order the following: a DNA sequence which contains the promoter and operator P.sub.L O.sub.

Abstract: A method is provided for recovering a purified animal growth hormone or a polypeptide analog thereof having substantially the same amino acid sequence as, and the biological activity of, the corresponding naturally-occurring animal growth hormone from a bacterial cell in which the animal growth hormone or polypeptide analog has been produced by means of expression of a plasmid encoding the hormone or polypeptide analog which comprises: (a) disrupting the cell wall of the bacterial cell in a buffered neutral pH solution so as to produce a lysate containing precipitated hormone or polypeptide analog; (b) recovering the resulting precipitated hormone or polypeptide analog; (c) suspending the precipitated hormone or polypeptide analog so recovered in distilled water; (d) treating the resulting precipitate-containing suspension with a sodium hydroxide solution having an alkaline pH of about 11.

Abstract: Analogs of hGH having the activity of naturally occurring hGH and a similar amino acid sequence varying from the sequence of natural hGh by the addition of one or more amino acids, e.g. methione or methionine-leucine, to the N-terminus of natural hGH have been produced, recovered and purified. Such analogs may be incorporated into pharmaceutical compositions and administered to a subject to increase the level of hGH in the subject.Analogs of hGH which comprise the amino acid sequence of natural hGH from the N-terminus of which one or more amino acids have been deleted, e.g. Met.sup.14 hGh, have been produced, recovered and purified. Such analogs may be incorporated into pharmaceutical compositions and administered to a subject to lower the level of hGH in the subject.A plasmid has been constructed which directs the expression of an analog of hGH having the amino acid sequence methionine-leucine added to the N-terminus of natural hGH.

Abstract: An improved vector upon introduction into a suitable bacterial host containing the thermolabile repressor C.sub.I renders the host cell capable, upon increasing the temperature of the host cell to a temperature at which the repressor is destroyed, of effecting expression of a desired gene inserted into the vector and production of polypeptide encoded by the gene. The vector is a double-stranded DNA molecule which includes in 5' to 3' order the following: a DNA sequence which contains the promoter and operator P.sub.L O.sub.