Instead, it was discovered by Mario Capecchi in 1967 that tRNAs do not ordinarily recognize stop codons at all, and that what he named "release factor" was not a tRNA molecule, but a protein.
The O'Reilly Factor | The X Factor (UK) | Microphthalmia-associated transcription factor | The X Factor | Fear Factor | Max Factor | The X Factor (TV series) | B-cell activating factor | Epidermal growth factor receptor | Psi Factor: Chronicles of the Paranormal | Astro Boy: Omega Factor | Roadshow theatrical release | twist transcription factor | The X Factor (U.S.) | The X Factor (UK TV series) | The X Factor (UK series 2) | The Omega Factor | The Butch Factor | The Adonis Factor | Sp1 transcription factor | Rheumatoid factor | PSI Factor | O'Reilly Factor | Limited release | Insulin-like growth factor 1 | Factor Three | factor | ETX (form factor) | epidermal growth factor receptor | Buddy's Circus#Release date discrepancy |