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![drsthanus Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::1859125432853135360.png) Dr sthanu subramanian [@drsthanus](/creator/twitter/drsthanus) on x 18.7K followers
Created: 2025-07-19 07:25:03 UTC

A summary of G-Protein Coupled Receptors (GPCRs), highlighting key points and types of Gα subunits:

They are 7-transmembrane receptors.

They activate G-proteins (α, β, γ subunits), which in turn initiate second messenger cascades.



![](https://pbs.twimg.com/media/GwNBW9SaoAA7qcb.jpg)

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