Extended Data Fig. 4: SIL incorporation for erythrochelin (7).
From: An isotopic labeling approach linking natural products with biosynthetic gene clusters
(a) Substrates used in the biosynthesis of 7, and both the expected and observed labeling of 7. (b) Structures and mass spectra for the iron adduct (m/z 657.2064) and the protonated adduct (m/z 604.2950) of 7 in the [1-13C]acetate and [1-15N]glutamate conditions. [1-13C]Propionate and [methyl-13C] methionine conditions are not shown as 7 was not produced under the [1-13C] propionate condition and no SIL incorporation occurred under the [methyl-13C]methionine condition.
