Abstract
ACCORDING to Woolley1, chloramphenicol inhibits the utilization of phenylalanine in E. coli, due to its structural resemblance to that amino-acid. Truhaut, Lambin and Boyer2, on the other hand, have concluded from experiments with E. typhi that the antibiotic interferes in the early stages of the synthesis of tryptophane, which Fildes3 has formulated as follows: In an attempt to elucidate the mode of action of chloramphenicol, its effect on E. coli, wild type, and on a number of its mutants, has been investigated. The inhibition caused in E. coli, wild type, can be fully reversed by indole and DL-tryptophane, less easily by DL-phenylalanine and L-tyrosine; it is not reversed by anthranilic acid. This result tends to show that chloramphenicol interferes with the synthesis of indole from anthranilic acid. The study of the mutants of E. coli clarifies the point still further.
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References
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BERGMANN, E., SICHER, S. Mode of Action of Chloramphenicol. Nature 170, 931–932 (1952). https://doi.org/10.1038/170931a0
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DOI: https://doi.org/10.1038/170931a0
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