G-protein

American  

noun

plural

G-proteins

1. Biochemistry. any of a class of proteins in the membrane of a cell that mediate between hormone receptors on the cell surface and enzymes whose response allows the cell to regulate its metabolism.

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G-protein Scientific  

/ jē′prō′tēn′ /

1. Any of a class of cell membrane proteins that function as intermediaries between hormone receptors and enzymes that enable the cell to regulate its metabolism in response to hormonal changes.

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Example Sentences

"G-protein coupled receptors, normally, can be activated by specific small molecules that bind in a pocket in the receptor," explained Nicholas Kalogriopoulos, a postdoctoral fellow in the Ting lab and co-lead author of the paper.

From Science Daily • Dec. 4, 2024

This region is critical to form a signaling complex, which helps to transfer the signal from the taste receptor to the G-protein to the taste receptor cells.

From Science Daily • Apr. 10, 2024

"We also have the ability to affect specific G-protein subtypes, like G-protein alpha or G-protein beta, rather than other G-protein pathways that we don't want to cause any other side effects."

From Science Daily • Apr. 10, 2024

Adrenaline has both a stimulatory and an inhibitory effect on heart rate and blood pressure. β-blockers bind to G-protein and intervene with the inhibitory effect of adrenaline.

From Textbooks • Jun. 9, 2022

Once the G-protein binds to the receptor, the resultant shape change activates the G-protein, which releases GDP and picks up GTP.

From Textbooks • Jun. 9, 2022