[Term] id: PR:000027832 name: cellular tumor antigen p53 isoform 1 phosphorylated 9 def: "A cellular tumor antigen p53 isoform 1 that has been phosphorylated on two Ser residues in the N-terminal transactivation domain in response to gamma-irradiation. Example: UniProtKB:P04637-1, Ser-15/Ser-37, MOD:00046." [PRO:PD, PMID:14712210] comment: Category=modification. synonym: "TP53/iso:1/Phos:9" EXACT PRO-short-label [PRO:DNx] is_a: PR:000003036 ! cellular tumor antigen p53 isoform 1 relationship: has_part MOD:00046 ! O-phospho-L-serine