Erratum to: A novel deconvolution method for modeling UDP-N-acetyl-D-glucosaminebiosynthetic pathways based on ¹³C mass isotopologue profiles undernon-steady-state conditions

The figure published as Figure 2 in the original published version of the manuscript isin fact a duplicate of Figure 5. The correct Figure 2 is shown here (Figure 1 in this correction). Note that the legend for Figure 2 andreferences to it in the main text apply to the correct Figure 2. The authors andpublisher regret the error.

Figure 1

Species assignments of UDP- N -acetyl-D-glucosamine (UDP-GlcNAc)isotopologues in Fourier transform-ion cyclotron resonance-mass spectrometry(FT-ICR-MS). The same crude extracts used for NMR were analyzed followingre-exchange of ²H back to ¹H. Analysis conditions are statedin the text. With correction to an internal reference, all of the isotopologueswere assignable at better than 1 ppm mass accuracy, with most better than 10 ppbmass accuracy. The molecular formulae were assigned using Xcalibur software withelemental limits set to CHONP and allowing up to 17 occurrences of ¹³C.The combination of the ultra-high resolution with extreme mass accuracy resultedin high confidence that only 'pure' ¹³C isotopologues were quantifiedfor the moiety modeling.