G-protein

American  

noun

G-proteins plural

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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Other Word Forms

Inflected Forms

noun

• G-proteins
  plural

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

"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

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

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

Other membrane receptors interact with a G-protein on the cytoplasmic side of the plasma membrane, which causes a series of reactions inside the cell.

From Textbooks • Jun. 9, 2022