| id | GO:0005834 Detailed information
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| name | heterotrimeric G-protein complex
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| namespace | cellular_component
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| def | "Any of a family of heterotrimeric GTP-binding and hydrolyzing proteins; they belong to a superfamily of GTPases that includes monomeric proteins such as EF-Tu and RAS. Heterotrimeric G-proteins consist of three subunits; the alpha subunit contains the guanine nucleotide binding site and possesses GTPase activity; the beta and gamma subunits are tightly associated and function as a beta-gamma heterodimer; extrinsic plasma membrane proteins (cytoplasmic face) that function as a complex to transduce signals from G-protein coupled receptors to an effector protein." [ISBN:0198547684]
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| comment | See also the molecular function term 'G-protein coupled receptor activity ; GO:0004930'.
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| subset | gosubset_prok
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| is_a | GO:0031234 ! extrinsic to internal side of plasma membrane
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| is_a | GO:0043234 ! protein complex
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