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Mapping of selenium metabolic pathway in yeast by Liquid Chromatography−Orbitrap mass spectrometry

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Academic year: 2021

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Figure 1. Flow diagram of sulfur metabolic pathways in yeast (adopted from  48, 49 )
Figure  3. Mass  spectra  of  a,  non-thiolic  sulfur  compounds in  the  sulfur  pathway (Met,  AdoHcy, AdoMet, Cysta); b, Se-Met and Se-AdoHcy, using the Orbitrap mass spectrometer  at resolution 30,000.
Figure  4. Mass  spectra  of  a,  IAA  derivatized  Se-DOP-Cys  (Se-DOP-Cys-IAA),  IAA  derivatized  Se-DOP-HCys  (Se-DOP-HCys-IAA), GSH-Se-DOP-Cys,  and  GSH-Se-DOP-HCys;  b,  PHMB  derivatized  Se-DOP-Cys (Se-DOP-Cys-PHMB),  using  the  Orbitrap mass spe
Table 1 mass accuracy and integration ranges Selenocompounds Observed  mass (m/z) Accuracy(ppm) Integration range (m/z) IAA  complexes Se-Cys-IAA  227.97727 3.351 227.97-227.99Se-HCys-IAA241.993273.280241.98-242.01 Se-GSH-IAA 414.04220 2.022 414.02-414.07
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