title: Methionine as the source of methyl groups for ubiquinone and vitamin K: a study using nuclear magnetic resonance and mass spectrometry.
mesh_terms: D003903:Deuterium; D004926:Escherichia coli / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D008715:Methionine / Q000378:metabolism*; D008745:Methylation; D008832:Microchemistry; D009154:Mutation; D013057:Spectrum Analysis; D014316:Tritium; D014451:Ubiquinone / Q000378:metabolism*; D014812:Vitamin K / Q000378:metabolism*
chemical_list: D014316:Tritium; D014812:Vitamin K; D014451:Ubiquinone; D008715:Methionine; D003903:Deuterium