- Myr+-Gi2 alpha and Go alpha subunits restore the efficacy of opioids, clonidine and neurotensin giving rise to antinociception in G-protein knock-down mice. Garzón, J., Rodríguez-Díaz, M., DeAntonio, I., DeFelipe, J., Rodríguez, J.R., Sánchez-Blázquez, P. Neuropharmacology (1999)