Nobel Prize in Chemistry 2004

Aaron Ciechanover

Photo: D. Porges

Prize share: 1/3

Avram Hershko

Photo: D. Porges

Prize share: 1/3

Irwin Rose

Photo from the Nobel Foundation archive.

Prize share: 1/3

The Nobel Prize in Chemistry 2004 was awarded jointly to Aaron Ciechanover, Avram Hershko and Irwin Rose "for the discovery of ubiquitin-mediated protein degradation"

To cite this section
MLA style: The Nobel Prize in Chemistry 2004. NobelPrize.org. Nobel Prize Outreach 2026. Wed. 7 Oct 2026. <https://www.nobelprize.org/prizes/chemistry/2004/summary/>

Six days, six prizes

Explore prizes and laureates

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