G-protein

noun

Definition of G-protein

: any of a class of cell membrane proteins that are coupled to cell surface receptors and upon stimulation of the receptor by an extracellular signaling molecule (such as a hormone or neurotransmitter) bind to GTP to form an active complex which mediates an intracellular event (such as activation of adenylate cyclase)

First Known Use of G-protein

1967, in the meaning defined above

History and Etymology for G-protein

guanosine triphosphate-binding protein

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Time Traveler for G-protein

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The first known use of G-protein was in 1967

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Dictionary Entries Near G-protein

GPI

GPM

GPO

G-protein

GPS

GQ

gr

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Statistics for G-protein

Cite this Entry

“G-protein.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/G-protein. Accessed 25 Jul. 2021.

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More Definitions for G-protein

G protein

noun
\ ˈjē- How to pronounce G protein (audio) \

Medical Definition of G protein

: any of a class of cell membrane proteins that are coupled to cell surface receptors and upon stimulation of the receptor by an extracellular molecule (as a hormone or neurotransmitter) bind to GTP to form an active complex which mediates an intracellular event (as activation of adenylate cyclase)

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