[Term] id: PR:000049524 name: cellular tumor antigen p53 phosphorylated 4 (human) def: "A cellular tumor antigen p53 (human) that has been phosphorylated on the residue at the position equivalent to Thr-55 of the amino acid sequence represented by UniProtKB:P04637. UniProtKB:P04637, Thr-55, MOD:00047." [PRO:DNx, Reactome:R-HSA-6805400] comment: Category=organism-modification. synonym: "hTP53/Phos:4" EXACT PRO-short-label [PRO:DNx] synonym: "UniProtKB:P04637, Thr-55, MOD:00047" EXACT PRO-proteoform-std [PRO:DNx] xref: Reactome:R-HSA-6805400 "PR:000049524 located_in GO:0005654" is_a: PR:P04637 ! cellular tumor antigen p53 (human) relationship: has_part MOD:00047 ! O-phospho-L-threonine relationship: only_in_taxon NCBITaxon:9606 ! Homo sapiens