title: Nucleotide sequence analysis identifies the human c-sis proto-oncogene as a structural gene for platelet-derived growth factor.
abstract: The simian sarcoma virus transforming gene, v-sis, encodes a protein, p28sis , that is closely related to human platelet-derived growth factor (PDGF). The human locus related to v-sis was cloned and shown to contain at least five exons corresponding to the v-sis coding region. Nucleotide sequence analysis of these exons revealed that the predicted amino acid sequence of human c-sis differed by 6% from that of the woolly monkey-derived v-sis. These findings imply that the sis proto-oncogene has been well conserved during primate evolution. By comparison of the known amino acid sequences of PDGF peptides with the predicted human c-sis protein, it was possible to demonstrate that this human proto-oncogene is the structural gene encoding one of the two major polypeptides of this potent mitogen for connective tissue cells.
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D005796:Genes; D005814:Genes, Viral; D006801:Humans; D009693:Nucleic Acid Hybridization; D009857:Oncogenes; D010982:Platelet-Derived Growth Factor / Q000235:genetics*; D000090063:Proto-Oncogene Mas; D012190:Retroviridae / Q000235:genetics*; D012842:Sarcoma Virus, Woolly Monkey / Q000235:genetics*
chemical_list: C000715470:MAS1 protein, human; D010982:Platelet-Derived Growth Factor; D000090063:Proto-Oncogene Mas