Figure 3

(a) HILIC-MS chromatogram of complex lipids extracted from soil microbes in negative ion mode. (b) Extracted ion chromatogram (XIC) of m/z 700.49, and (c–d) HILIC-HRMS/MS spectra of m/z 700.49 eluted at 12.40 min and 17.61 min representing MMPE 16:1/16:1 and PE 16:1/17:1 molecular species, respectively.