MTNR1B – A Gene
MTNR1B is a human gene. It codes for a protein. This particular protein is one of two that are receptors for melatonin. Melatonin is a brain chemical that helps control our sleep cycles.
MTNR1B is expressed in both the retinas of our eyes and in our brains.
Changes to the MTNR1B gene are linked to type 2 diabetes.