[Term] id: PR:000003037 name: cellular tumor antigen p53 isoform 1 unmodified form def: "A cellular tumor antigen p53 isoform 1 that has not been subjected to any co- or post-translational residue modification or peptide bond cleavage." [PRO:CNA] comment: Category=modification. synonym: "TP53/iso:1/UnMod" EXACT PRO-short-label [PRO:DNx] synonym: "unmodified p53" EXACT [PMID:19339993] intersection_of: PR:000003036 ! cellular tumor antigen p53 isoform 1 intersection_of: has_part PR:000021935 ! immature protein part intersection_of: lacks_part PR:000025513 ! modified amino-acid residue disjoint_from: PR:000018264 ! proteolytic cleavage product