🔬 Discovery

Discovery of RNA polymerase

Descubrimiento de la ARN polimerasa

Date
1960 · confidence high
Place
St. Louis, Missouri, United States
Credited to
Audrey Stevens, Sam Weiss and Jerard Hurwitz (independent laboratories)
Field
Life & health

⚠️ Disputed: the sources disagree.

What was discovered

Three laboratories independently identified the enzyme RNA polymerase, which copies DNA into messenger RNA; the finding corrected the earlier mistaken attribution of that function to polynucleotide phosphorylase, for which Severo Ochoa had received the 1959 Nobel Prize.

Ochoa's claimed priority was corrected once it was found he had characterised a different enzyme.

What it led to

  • Mechanistic understanding of genetic transcription
  • A key tool for molecular biology and genetic engineering
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Sources✓ verified 2026-09-25