# G protein

> English word · Noun

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

## Etymology
From guanine nucleotide-binding protein.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/g-protein