PTM - CPLM Gene Name UniProt ID Type Position Code Epn3 Q91W69 Ubiquitination 86 K Epn3 Q91W69 Ubiquitination 107 K Epn3 Q91W69 Ubiquitination 117 K Epn3 Q91W69 Ubiquitination 135 K

PTM - dbPAF Gene Name UniProt ID Position Type Species Epn3 Q91W69 105 T Mus musculus(Mouse) Epn3 Q91W69 111 Y Mus musculus(Mouse) Epn3 Q91W69 172 S Mus musculus(Mouse) Epn3 Q91W69 175 S Mus musculus(Mouse) Epn3 Q91W69 177 S Mus musculus(Mouse) Epn3 Q91W69 178 S Mus musculus(Mouse) Epn3 Q91W69 179 Y Mus musculus(Mouse) Epn3 Q91W69 181 S Mus musculus(Mouse) Epn3 Q91W69 184 S Mus musculus(Mouse) Epn3 Q91W69 185 S Mus musculus(Mouse) Epn3 Q91W69 251 S Mus musculus(Mouse) Epn3 Q91W69 257 S Mus musculus(Mouse) Epn3 Q91W69 386 S Mus musculus(Mouse) Epn3 Q91W69 387 S Mus musculus(Mouse) Epn3 Q91W69 389 T Mus musculus(Mouse) Epn3 Q91W69 445 S Mus musculus(Mouse) Epn3 Q91W69 447 S Mus musculus(Mouse) Epn3 Q91W69 448 T Mus musculus(Mouse) Epn3 Q91W69 458 S Mus musculus(Mouse) Epn3 Q91W69 494 T Mus musculus(Mouse) Epn3 Q91W69 504 S Mus musculus(Mouse) Epn3 Q91W69 505 S Mus musculus(Mouse)

PTM - PhosphositePlus UniProt ID MOD_RSD Type SITE_+/-7_AA Q91W69 T105-p Phosphorylation ENLYTIQtLkDFQyI Q91W69 Y111-p Phosphorylation QtLkDFQyIDRDGkD Q91W69 S175-p Phosphorylation YSRRSRGsPssyTSA Q91W69 S177-p Phosphorylation RRSRGsPssyTSASS Q91W69 S178-p Phosphorylation RSRGsPssyTSASSs Q91W69 Y179-p Phosphorylation SRGsPssyTSASSsP Q91W69 S185-p Phosphorylation syTSASSsPRYASDL Q91W69 T199-p Phosphorylation LEQARPQtSGEEELQ Q91W69 S257-p Phosphorylation RSWKGDDsPVANGAE Q91W69 S386-p Phosphorylation IADPWAPssPtRKLP Q91W69 S387-p Phosphorylation ADPWAPssPtRKLPS Q91W69 T389-p Phosphorylation PWAPssPtRKLPSTG Q91W69 S458-p Phosphorylation LDPFGDSsPSCKQNG Q91W69 T494-p Phosphorylation KEARPCRtPESFLGP Q91W69 K23-ub Ubiquitination NYSEAEIkVREATSN Q91W69 K86-ub Ubiquitination TLLDYLLkTGSERVA Q91W69 K107-ub Ubiquitination LYTIQtLkDFQyIDR Q91W69 K117-ub Ubiquitination QyIDRDGkDQGVNVR Q91W69 K135-ub Ubiquitination KQVMALLkDEERLRQ

PTM - dbPTM UniProt ID Position Code Type Resources References Q91W69 177 S Phosphorylation Phosphositeplus.1010730 20139300 Q91W69 178 S Phosphorylation Phosphositeplus.1010730 20139300 Q91W69 184 S Phosphorylation Phosphositeplus.1010730 21183079 Q91W69 185 S Phosphorylation Phosphositeplus.1010730 20139300;21183079 Q91W69 257 S Phosphorylation Phosphositeplus.1010730 18846507;20139300;21183079 Q91W69 386 S Phosphorylation Phosphositeplus.1010730 20139300 Q91W69 387 S Phosphorylation Phosphositeplus.1010730 20139300;20415495;21183079;21659604 Q91W69 458 S Phosphorylation Phosphositeplus.1010730 21659605 Q91W69 504 S Phosphorylation Phosphositeplus.1010730 21183079 Q91W69 389 T Phosphorylation Phosphositeplus.1010730 20139300;21183079 Q91W69 494 T Phosphorylation Phosphositeplus.1010730 21183079;21659605 Q91W69 179 Y Phosphorylation Phosphositeplus.1010730 20139300 Q91W69 257 S Phosphorylation SysPTM 1.1 18846507

PTM - UniProt UniProt ID Position Type PMIDs Q91W69 184 Phosphoserine 21183079 Q91W69 185 Phosphoserine 21183079 Q91W69 257 Phosphoserine 21183079

PTM - PHOSIDA Symbol Accession Code Position Surrounding Sequence Type Epn3 IPI00127364 S 257 SWKGDDpSPVANGA phosphorylation Epn3 IPI00127364 S 387 DPWAPSpSPTRKLP phosphorylation Epn3 IPI00127364 T 389 WAPSSPpTRKLPST phosphorylation