[Term] id: PR:000000561 name: retinoblastoma-like protein 2 isoform 1 phosphorylated 2 def: "A retinoblastoma-like protein 2 isoform 1 phosphorylated form that has Cdk-dependent G1 phosphorylation, and additionally phosphorylated on a Ser residue within the region linking the retinoblastoma-associated protein A and B domains, by cyclin Cdk4(6). This phosphorylation leads to ubiquitin-dependent proteolysis." [PMID:12006580, PMID:12435635] comment: Category=modification. synonym: "RBL2/iso:1/Phos:2" EXACT PRO-short-label [PRO:DNx] is_a: PR:000000459 ! retinoblastoma-like protein 2 isoform 1 phosphorylated form relationship: has_part MOD:00046 ! O-phospho-L-serine