Extended Data Fig. 5: SIL incorporation in fragments of 7.
From: An isotopic labeling approach linking natural products with biosynthetic gene clusters

Mass spectra of fragments m/z 390.1990 (a), m/z 303.1666 (b), m/z 173.0932 (c) and m/z 131.0827 (d) under [1-13C]acetate and [1-15N]glutamate conditions indicate that the detected SIL incorporation is within the expected labeling maximums for the biosynthetic subunits derived from ornithine and acetyl-CoA.