Aaron Ciechanover is an Israeli biochemist who, along with Avram Hershko and Irwin Rose, was awarded the Nobel Prize in Chemistry in 2004 for their discovery of the ubiquitin-proteasome system, a fundamental process in cells for degrading and recycling proteins. Born on October 1, 1947, in Haifa, Israel, Ciechanover is renowned for his groundbreaking research in the field of protein degradation and for unraveling the mechanisms that regulate this essential cellular function. He has made significant contributions to biochemistry and molecular biology.