Aaron Ciechanover is an Israeli biologist who won the Nobel Prize in Chemistry for characterizing the method that cells use to degrade and recycle proteins using ubiquitin. The Nobel Prize in Chemistry 2004, announced October 6, 2004. Aaron Ciechanover, Avram Hershko, and Irwin Rose, “for the discovery of ubiquitin-mediated protein degradation”. Aaron Ciechanover: born 1947, Haifa, British Protectorate of Palestine (now Israel). Avram Hershko: born 1937, Karcag, Hungary. Irwin Rose: born 1926, Brooklyn, NY, USA. Wiki link Wiki link Wiki link Data: the Nobel Foundation (CC0).