Figure 2

UPLC-MRM chromatograms of SIL heavy signature peptides for subcellular organelle marker proteins and three case study proteins. 1: HSC70_ITITNDK (Cytosol); 2: GRP78_ITITNDQNR (ER); 3: β2M_IQVYSR; 4: HSP60_VTDALNATR (Mitochondria); 5: HistoneH3.1_YRPGTVALR (Nucleus); 6: GRP78_LTPEEIER (ER); 7: LAMP1_TVESITDIR (Lysosome); 8: HSP60_LSDGVAVLK (Mitochondria); 9: CYP3A4_EVTNFLR; 10: Rab7_VIILGDSGVGK (Late endosome); 11: LAMP1_VWVQAFK (Lysosome); 12: Rab7_ATIGADFLTK (Late endosome); 13: Rab5_LVLLGESAVGK (Early endosome); 14: LAMP1_AFSVNIFK (Lysosome); 15: HSC70_FEELNADLFR (Cytosol); 16: FcRn_LFLEAFK.