. . . . . . . . . "503"^^ . . "503"^^ . . "Phosphoserine modification of amino acid 503 of NX_P98194-3" . . . . . . . "neXtProt silver" . . "10.1126/scisignal.2001570" . . . . . . "2014-09-19T00:00:00.0Z"^^ . . . "neXtProt database" . "CALIPHO project" . . . . . "3" . . .