The Nobel Prize in Physiology or Medicine 2004

The Nobel Prize in Physiology or Medicine 2004

 

A large gene family

Axel and Buck searched for genes coding for proteins expressed exclusively in the olfactory epithelium.

Using molecular biology techniques they discovered a large set of genes coding for olfactory receptors. This large gene family is composed of several hundred different genes encoding receptor molecules.

Today we know that these genes represent around three per cent of the total number of genes in mammals.

gene

To cite this section
MLA style: The Nobel Prize in Physiology or Medicine 2004. NobelPrize.org. Nobel Prize Outreach 2025. Fri. 5 Dec 2025. <https://www.nobelprize.org/prizes/medicine/2004/7432-the-nobel-prize-in-physiology-or-medicine-2004-2004-3/>

Nobel Prizes and laureates

Six prizes were awarded for achievements that have conferred the greatest benefit to humankind. The 14 laureates' work and discoveries range from quantum tunnelling to promoting democratic rights.

See them all presented here.

Illustration

Explore prizes and laureates

Look for popular awards and laureates in different fields, and discover the history of the Nobel Prize.