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. Author manuscript; available in PMC: 2014 Aug 20.
Published in final edited form as: Anal Chem. 2013 Aug 2;85(16):7713–7719. doi: 10.1021/ac400751j

Figure 5. decoMS2 applied to methionine from astrocytes.

Figure 5

(a) The metabolic extract of astrocytes was analyzed by using the standard metabolomic workflow and MS2 data for methionine were obtained. The raw experimental MS2 spectrum for methionine is shown on top and the MS2 spectrum from a pure standard is shown on bottom. Fragments that match in the 2 spectra are colored black, while fragments that do not match are colored red. The additional fragments in the experimental MS2 spectrum preclude identification of this compound as methionine. (b) After applying decoMS2, the experimental MS2 data matches the MS2 data of the methionine standard and thereby supports the structural assignment.