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PRDM2, a member of nuclear/histone methyltransferase superfamily, consists of an N-terminal PR domain, an Rb-binding motif, 8 Kruppel-like zinc finger motifs, Nuclear hormone-receptor binding motif and a C-terminal PR-domain binding motif. Ubiquitously expressed in low levels, PRDM2 exists in 2 isoforms, a 280 kDa RIZ1 containing PR-domain and a 250 kDa truncated RIZ2 that lacks PR-domain. A tumor suppressor with a prominent role in cell growth and differentiation, PRDM2 binds to Retinoblastoma protein, estrogen receptor, GATA-3 and TPA-responsive element (MTE) of Heme-oxygenase-1 gene and influences pathogenesis of Retinoblastoma, transcriptional regulation during neuronal differentiation, transactivation of Heme-oxygenase-1 gene and specific effector of estrogen action. It is inactivated or altered due to mutations and hypermethylation in many types of human cancers suggesting a potential biomarker.
4833427P12Rik; E330024L24Rik; G3b; GATA-3 binding protein G3B; GATA-3-binding protein G3B; Gm1033; Gm19732; HUMHOXY1; KMT8; lysine N-methyltransferase 8; MTBzf; MTB-ZF; MTE-binding protein; PR domain 2; PR domain containing 2, with ZNF domain; PR domain zinc finger protein 2; PR domain-containing protein 2; Prdm2; retinoblastoma interacting zinc finger protein; retinoblastoma protein-binding zinc finger protein; retinoblastoma protein-interacting zinc finger protein; RIZ; RIZ1; RIZ2; RP5-1177E19.1; zinc finger protein RIZ; zinc-finger DNA-binding protein; Znfpr1c1
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