... signalling in somatic cells, where a family of G-protein-linked receptors pass activating signals across the plasma membrane Another, older idea is that it is the fusion of sperm and egg that is responsible for detonating the calcium explosion at fertilization We discuss the relative merits of the two ideas...

...R. L. Johnson; R. Gundersen; P. Lilly; G. S. Pitt; M. Pupillo; T. J. Sun; R. A. Vaughan; P. N. Devreotes ABSTRACT G-protein-linked cAMP receptors play an essential role in Dictyostelium development. The cAMP receptors are proposed to have seven transmembrane domains and a cytoplasmic C-terminal...