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. 1966 Nov;101(2):274–283. doi: 10.1042/bj1010274

Biosynthesis and utilization of aromatic compounds by Mycobacterium smegmatis with particular reference to the origin of salicylic acid

C Ratledge 1,2,*, F G Winder 1,2
PMCID: PMC1270106  PMID: 5966265

Abstract

1. Although Mycobacterium smegmatis could utilize a number of aromatic compounds as sole sources of carbon for growth, it did not appear to be able to use salicylic acid for growth or to metabolize it to any great extent. 2. When M. smegmatis was grown on shikimic acid as sole source of carbon, salicylic acid, anthranilic acid and 3,4-dihydroxybenzoic acid were released into the medium. When it was grown on quinic acid these compounds, together with p-hydroxybenzoic acid, p-hydroxyphenylacetic acid and a number of unidentified compounds, were formed. When it was grown on glucose only small amounts of salicylic acid could be detected. 3. When a washed suspension of cells with a normal iron content was incubated with shikimic acid, only small amounts of aromatic compounds were formed in the medium. When the cells were iron-deficient, substantial amounts of salicylic acid, 3,4-dihydroxybenzoic acid and catechol were formed, together with several other compounds not definitely identified. 4. When washed suspensions of cells, whether iron-sufficient or iron-deficient, were incubated with tryptophan no evidence of formation of salicylic acid, anthranilic acid or phenolic compounds was obtained. Washed suspensions did not convert anthranilic acid into salicylic acid. 5. When cell-free extracts of M. smegmatis were incubated with shikimic acid, or shikimic acid 5-phosphate, traces of anthranilic acid were formed under certain conditions. No formation of salicylic acid or other phenolic compound was observed even when a number of combinations of cofactors and coenzymes were tried.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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