G protein

noun

Any of a class of proteins, found in cell membranes, that pass signals between hormone receptors and effector enzymes.

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Meanings

nounG protein (plural G proteins)

plural G proteins · alternative G-protein

  1. biochemistryAny of a class of proteins, found in cell membranes, that pass signals between hormone receptors and effector enzymes.

Origin

From guanine nucleotide-binding protein.

Full word history & related roots →
Cite this entry
APA

G protein. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/G%20protein

MLA

“G protein.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/G%20protein. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “G protein,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/G%20protein.

Source: G protein on Wiktionary, CC BY-SA 4.0.