GTP-binding protein

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GTP-binding protein

[¦jē‚tē¦pē ′bīn·diŋ ‚prō‚tēn]
(cell and molecular biology)
One of a large family of heterotrimeric or monomeric proteins that bind GTP (guanosine 5′-triphosphate) as intermediaries in intracellular signaling pathways. Also known as G protein.