title: A differentiation stimulating factor induces cell sensitivity to 3':5'-cyclic AMP pulses in dictyostelium discoideum.
abstract: During the first few hours of starvation, Dictyostelium discoideum amoebae excrete a macromolecule, probably a glycoprotein, which stimulates cell differentiation to aggregation competence. 3':5'-Cyclic AMP pulses, which mimic the chemotactic signal, and this factor (differentiation stimulating factor) are shown to exert a cooperative effect in inducing cell differentiation. Data suggest that the appearance of the factor determines the moment amoebae become responsive to cyclic AMP pulses.
mesh_terms: D002449:Cell Aggregation / Q000187:drug effects; D002454:Cell Differentiation / Q000187:drug effects; D002633:Chemotaxis; D000242:Cyclic AMP / Q000494:pharmacology*; D004023:Dictyostelium / Q000166:cytology* / Q000502:physiology; D005508:Food Deprivation; D005656:Fungal Proteins / Q000494:pharmacology*; D008970:Molecular Weight; D009154:Mutation; D009235:Myxomycetes / Q000166:cytology*
chemical_list: D005656:Fungal Proteins; D000242:Cyclic AMP