Table 1. Proteins identified as SYP121- or SYP122-specific cargo proteins
LocusProtein NameIdentified inSecretion Mediated byFunction
AT1G76160SKU5, similar5Wild type, syp121SYP122Cell wall
AT5G26280TRAF-like family proteinWild type, syp121SYP122Other
AT1G30870Peroxidase superfamily proteinWild type, syp121SYP122Oxidative stress
AT5G10560Glycosyl hydrolase family proteinWild type, syp121SYP122Carbohydrate metabolism
AT1G54000GDSL-like lipaseWild type, syp121SYP122Lipid metabolism
AT4G16500Cystatin/monellin superfamily proteinWild type, syp121SYP122Protease inhibitor
AT5G20950Glycosyl hydrolase family proteinWild type, syp121SYP122Carbohydrate metabolism
AT4G22470Protease inhibitor/seed storage/lipid transfer protein (LTP) family proteinWild type, syp121SYP122Protease inhibitor
AT1G29090Cys proteinase superfamily proteinWild type, syp121SYP122Protease
AT4G04460Saposin-like aspartyl protease family proteinWild type, syp121SYP122Protease
AT1G28290AGP31, arabinogalactan protein31Wild type, syp121SYP122Cell wall
AT4G28520CRU3, cruciferin3Wild type, syp121SYP122Seed storage
AT5G44120CRU1, RmlC-like cupin superfamily proteinWild type, syp121SYP122Seed storage
AT1G47600BGLU34, β-glucosidase34Wild type, syp121SYP122Carbohydrate metabolism
AT5G34940GUS3, glucuronidase3Wild type, syp121SYP122Other
AT1G09750Eukaryotic aspartyl protease family proteinWild type, syp121SYP122Protease
AT3G54400Eukaryotic aspartyl protease family proteinWild type, syp121SYP122Protease
AT1G30700FAD-binding berberine family proteinWild type, syp121SYP122Cell wall
AT1G30720FAD-binding berberine family proteinWild type, syp121SYP122Cell wall
AT4G20860FAD-binding berberine family proteinWild type, syp121SYP122Cell wall
AT1G17860Kunitz family trypsin and protease inhibitor proteinWild type, syp121SYP122Protease inhibitor
AT2G10940Seed storage 2S albumin superfamily proteinWild type, syp122SYP121Seed storage
AT4G22485Seed storage 2S albumin superfamily protein cWild type, syp122SYP121Seed storage
AT4G22513Seed storage 2S albumin superfamily protein cWild type, syp122SYP121Seed storage
AT5G07360Amidase family proteinWild type, syp122SYP121Protease
AT1G14540Peroxidase superfamily proteinWild type, syp122SYP121Oxidative stress
AT5G22410RHS18, root hair specific18Wild type, syp122SYP121Oxidative stress
AT4G23560GH9B15, glycosyl hydrolase9B15Wild type, syp122SYP121Carbohydrate metabolism
AT1G77510PDI6, PDIL1-2Wild type, syp122SYP121Protein folding
AT3G07320O-Glycosyl hydrolases family17 proteinWild type, syp122SYP121Carbohydrate metabolism
AT1G52050Man-binding lectin superfamily proteinWild type, syp122SYP121Cell wall
AT5G19890Peroxidase superfamily proteinWild type, syp122SYP121Oxidative stress
AT1G21750PDI5, PDIL1-1Wild type, syp122SYP121Protein folding
AT3G45310Cys proteinase superfamily proteinWild type, syp122SYP121Protease
AT1G28660GDSL-like lipaseWild type, syp122SYP121Lipid metabolism
AT4G25810XTR6, xyloglucan endotransglycosylase6Wild type, syp122SYP121Cell wall
AT2G28100FUC1, α-l-fucosidase1Wild type, syp122SYP121Carbohydrate metabolism
AT2G26440Plant invertase/pectin methylesterase inhibitor superfamilyWild type, syp122SYP121Cell wall
AT3G45010SCPl48, Ser carboxypeptidase-like48Wild type, syp122SYP121Protease
AT3G03640BGLU25, β-glucosidase25Wild type, syp122SYP121Carbohydrate metabolism
AT1G28670ARAB-1, GDSL-like lipaseWild type, syp122SYP121Lipid metabolism