Ligand-independent reduction of cAMP receptors in Dictyostelium discoideum cells over-expressing a mutated ras gene.

Abstract excerpt

Drug-resistance selection in Dictyostelium discoideum transformants resulted in up to eight-times-higher ras protein levels. Over-production of the wild-type ras protein did not lead to an aberrant phenotype. Increased levels of the mutated [G12T]ras protein, however, were correlated with severe deficiencies in aggregation and development. This aberrant phenotype is associated with reduced cAMP binding, due to a...

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