MCHR1 (GPR24), also known as Melanin concentrating hormone receptor 1, belongs to a member of the G protein-coupled receptor family 1, is an integral plasma membrane protein which binds melanin-concentrating hormone, and is one of the melanin-concentrating hormone receptors found in all mammals. MCHR1 can inhibit cAMP accumulation and stimulate intracellular calcium flux, and is probably involved in the neuronal regulation of food consumption. Although structurally similar to somatostatin receptors, this protein does not seem to bind somatostatin. MCHR1 is thought to regulate appetite, and also functions in stress, anxiety and depression.