A Gα family member that can inhibit adenylyl cyclase.
The GDP/GTP cycle changes its interaction with receptors, beta-gamma subunits and effectors. Inhibition of adenylyl cyclase is a common family property, while the resulting cellular response also depends on other targets and local cyclic AMP breakdown. [ref]
Molecular Biology of the Cell, 4th edition by Bruce Alberts and others. Chapters 3, 6 and 15, protein function, translation and cell signalling
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