Crick here briefly touched on research with acridine mutants of bacteriophage T4, experiments that demonstrated that the triplet UGA did not have a transfer RNA assigned to it, meaning that it coded not for an amino acid but for the end of the polypeptide chain in protein synthesis.
NOTE: The right margin of the orginal letter cuts off a portion of the text.
Number of Image Pages:
1 (84,949 Bytes)
Date:
1966-11-02 (November 2, 1966)
Creator:
Crick, Francis
Recipient:
Champe, Sewell
Source:
Original Repository: Wellcome Library for the History and Understanding of Medicine. Francis Harry Compton Crick Papers