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. 2019 Jun 10;201(13):e00195-19. doi: 10.1128/JB.00195-19

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FIG 4 — Copper induces conversion of lipoproteins from DA-LP to lyso-LP. (A and B) MS-MS spectra of the protonated m/z 1,260 (A) and sodiated m/z 1,282 (B) parent ions of lipoprotein KO07_11695 from L. monocytogenes CFSAN023459 grown in the absence of copper. (C and D) MS-MS spectra of the protonated m/z 1,260 (C) and sodiated m/z 1,282 (D) parent ions of L. monocytogenes strain CFSAN023459 grown with 1 mM copper. (E and F) MS-MS spectra of the protonated m/z 1,260 (E) and sodiated m/z 1,282 (F) parent ions of the Δlit2 strain grown with 1 mM CuCl₂. (G and H) MS-MS spectra of the protonated m/z 1,260 (G) and sodiated m/z 1,282 (H) parent ions of the Δlit2 strain back-complemented with pP_xylLmlit2 grown with 1 mM CuCl₂ and 2% xylose. The diagnostic dehydroalanyl ions for the diacylglycerol-modified (triangles) and the lyso (circles) lipopeptides are indicated. The parent spectra are shown in Fig. S3.