A Specialized Dehydrogenase Provides l ‐Phenyllactate for FR900359 Biosynthesis
Abstract: d‐Phenyllactate (PLA) is a component of the selective Gq protein inhibitor and nonribosomal cyclic depsipeptide FR900359 (FR). Here we report a detailed biochemical investigation of pla biosynthesis and its incorporation into the natural product FR. The enzyme FrsC, member of the lactate/malate dehydrogenase superfamily, was shown to catalyze the formation of l‐PLA from phenylpyruvate. FrsC was kinetically characterized and its substrate specificity determined. Incorporation of l‐PLA was probed by assaying the adenylation domain FrsE‐A3 and feeding studies with a Chromobacterium vaccinii ΔfrsC mutant, confirming preferred activation of l‐PLA followed by on‐line epimerization to d‐pla. Finally, detailed bioinformatic analyses of FrsC revealed its close relation to malate dehydrogenases from primary metabolism and suggest extensions in the substrate binding loop to be responsible for its adaptation to accepting larger aromatic substrates with high specificity.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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A Specialized Dehydrogenase Provides l ‐Phenyllactate for FR900359 Biosynthesis ; day:09 ; month:12 ; year:2021 ; extent:1
ChemBioChem ; (09.12.2021) (gesamt 1)
- Urheber
- DOI
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10.1002/cbic.202100569
- URN
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urn:nbn:de:101:1-2021121014122978223845
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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2025-08-15T07:25:20+0200
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Beteiligte
- Klöppel, Sophie
- Richarz, René
- Wirtz, Daniel A.
- Vasenda, Natalia
- König, Gabriele M.
- Crüsemann, Max
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