Receptor for alpha-ketoglutarate. Seems to act exclusively through a G(q)-mediated pathway (By similarity). Detected in kidney and, to a lower extent, in placenta. Not detected in brain tissues including the frontal cortex, caudate putamen, thalamus, hypothalamus, hippocampus or pons. Belongs to the G-protein coupled receptor 1 family. Was originally (Ref.5) thought to be a P2Y receptor.