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  • Title: Escherichia coli mutant lacking 4-thiouridine in its transfer ribonucleic acid.
    Author: Ramabhadran TV, Fossum T, Jagger J.
    Journal: J Bacteriol; 1976 Nov; 128(2):671-2. PubMed ID: 789361.
    Abstract:
    A mutant of Escherichia coli has been isolated that lacks 4-thiouridine, a rare base in transfer ribonucleic acid. The mutant grows at the same rate as wild-type cells. It shows little near-ultraviolet-induced growth delay, thus supporting earlier hypotheses that 4-thiouridine in transfer ribonucleic acid is the chromophore for this growth delay.
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