PTM - PHOSIDA Symbol Accession Code Position Surrounding Sequence Type FAM53C IPI00009900 S 122 RHCRSLpSVPVDLS phosphorylation FAM53C IPI00009900 S 232 PPQRRFpSLSPSLG phosphorylation FAM53C IPI00009900 S 234 QRRFSLpSPSLGPQ phosphorylation