Abstract
Mammals can discriminate a vast number of odorants through their sense of smell. In the nasal cavity there are millions of olfactory sensory neurons, which are involved in this task. Odorants activate odorant receptors expressed in the cilia of olfactory neurons. The Odorant Receptors (ORs) belong to the GPCR superfamily and constitute a large gene family composed of around 1000 members i…