title: Cloning and expression of murine immune interferon cDNA.
abstract: The murine immune interferon (IFN-gamma) gene was cloned and expressed under control of the simian virus 40 early promoter in the monkey COS-1 cell line. A protein is secreted from these cells having the biological, antigenic, and biochemical characteristics of natural murine IFN-gamma. Cloned murine IFN-gamma cDNAs were obtained by using RNA from both mitogen-induced murine spleens and the transfected COS cells, and both code for identical proteins. The mature murine IFN-gamma encoded is 136 amino acids long, 10 amino acids shorter than human IFN-gamma. The nucleotide homology between the murine and human IFN-gamma genes is 60-65%, whereas the encoded proteins are only 40% homologous. Murine IFN-gamma cDNA was expressed in Escherichia coli under trp promoter control.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D003001:Cloning, Molecular; D004247:DNA / Q000378:metabolism*; D004262:DNA Restriction Enzymes; D005796:Genes; D006801:Humans; D007371:Interferon-gamma / Q000235:genetics*; D051379:Mice; D009693:Nucleic Acid Hybridization; D010957:Plasmids; D013539:Simian virus 40 / Q000235:genetics; D013045:Species Specificity; D014158:Transcription, Genetic
chemical_list: D007371:Interferon-gamma; D004247:DNA; D004262:DNA Restriction Enzymes