D1–D2 dopamine receptor heteromer
The D1–D2 dopamine receptor heteromer is a receptor heteromer consisting of D1 and D2 protomers. == Structure == D1 and D2 receptors interact primarily through discrete amino acids in the cytoplasmic regions of each receptor, with no involvement of transmembrane parts.
Source: Wikipedia — D1–D2 dopamine receptor heteromer (CC BY-SA 4.0)