🔬 Discovery

Ubiquitin-mediated protein degradation

Degradación de proteínas mediada por ubiquitina

Date
1978-1980 · confidence high
Place
Technion, Haifa, Israel
Credited to
Avram Hershko and Aaron Ciechanover, with Irwin Rose
People
👤 Aarón Ciechanover1947–👤 Avram Hershko1937–👤 Irwin Rose1926–2015
Field
Life & health

What was discovered

They discovered that cells tag the proteins they must destroy by attaching chains of a small protein, ubiquitin, which directs them to the proteasome. It is the mechanism of quality control and cell-cycle regulation.

Some of the experiments were carried out at the Fox Chase Cancer Center in Philadelphia with I. Rose. Nobel Prize in Chemistry 2004.

What it led to

  • proteasome-inhibitor drugs (bortezomib)
  • targeted protein degraders (PROTACs)
  • understanding of the cell cycle and cancer
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📄 Original publication

Proposed role of ATP in protein breakdown: conjugation of protein with multiple chains of the polypeptide of ATP-dependent proteolysis.A Hershko, A Ciechanover, H Heller, A L Haas et al. · Proceedings of the National Academy of Sciences · 1980

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