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The pyrroloketoindane antibiotic indanomycin is produced by Streptomyces antibioticus NRRL 8167. These hybrid nonribosomal peptide-polyketide ionophore antibiotics are characterized by the presence of an unusual indane ring system, and there is interest in identifying the biochemical mechanisms guiding its biosynthesis. Following incorporation of [1-(13)C]-labeled precursors, the primary metabolic origins of indanomycin were determined to be one unit of L-proline, six units of malonyl-CoA and two units each of methylmalonyl-CoA and ethylmalonyl-CoA.
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Roege et al. (2008) studied this question.
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