Heterotrimeric guanine nucleotide-binding proteins (G proteins) consist of α, β and γ subunits and mediate the effects of hormones, neurotransmitters, chemokines and sensory stimuli. To date, over 20 known Gα subunits have been classified into four families, Gα(s), Gα(i/o), Gα(q) and Gα(12), based on structural and functional similarities (1,2). Phosphorylation of Tyr356 of Gα(q)/Gα(11) is essential for activation of the G protein, since phenylalanine substitution for Tyr356 changes the interaction of Gα with receptors and abolishes ligand-induced IP3 formation (3).
G alpha-11; G-protein subunit alpha-11; Gq class; guanine nucleotide binding protein (G protein), alpha 11 (Gq class); guanine nucleotide regulatory protein G alpha 11; guanine nucleotide-binding protein alpha 11 subunit; Guanine nucleotide-binding protein G(y) subunit alpha; Guanine nucleotide-binding protein subunit alpha-11
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