Characterization of Fatty Acids in Crenarchaeota by GC-MS and NMR

Figure 4

Comparison of the fragmentation patterns of fatty acids from cell extracts and standards. Representative mass spectrum for hexadecanoic acid (C16:0) from S. solfataricus cell extract (a), I. hospitalis-N. equitans coculturecell extract (b), and C16:0 fatty acid standard (c). Low and high mass fragments match intensity with the C16:0 standard, indicating that this fatty acid is present in the cell extract of these archaeal organisms. The region above 120 m/z has been expanded 3-fold on the -axis as indicated by the arrow to better visualize these low intensity ions.

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