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. Author manuscript; available in PMC: 2017 May 24.
Published in final edited form as: Mol Biosyst. 2016 May 24;12(6):1929–1937. doi: 10.1039/c6mb00009f

Figure 1.

Figure 1

(A) Example 13C and 15N mass isotopomers intensity peaks in glutamine in a single scan of LC-MS profile mode data. (B) Mass isotopomers peaks of glutathione, as in A. (C) Region of profile mode LC-MS data showing chromatographic elution of glutathione mass isotopomer peaks, from the same sample as in B. (D) MMID of glutamine depicted as an array plot. (E) MMID of glutamine. Error bars denote absolute standard deviation of triplicates. MI, mass isotopomer. (F) Histogram (gray bars) and cumulative density (solid line) of MMID standard deviations across all measured metabolites. Undetectable mass isotopomers (zero in all samples) were excluded. Rightmost histogram bin represents all MI with standard deviation > 0.03.