NCIt synonyms : SETDB1; ESET; ERG-Associated Protein with Set Domain; Histone H3-K9 Methyltransferase 4; EC 2.1.1.43; SET Domain Bifurcated 1; Lysine N-Methyltransferase 1E; Histone-Lysine N-Methyltransferase H3 Lysine-9 Specific 4; H3-K9-HMTase 4; Histone-H3-K9 Methyltransferase-4;
NCIt definition : Histone-lysine N-methyltransferase SETDB1 (1291 aa, 143 kDa) is encoded by the human
SETDB1 gene. This protein is involved in histone methylation.;
NCIt note : Histone H3-K9 Methyltransferase 4 methylates histone H3 Lys-9 in epigenetic transcriptional
repression that recruits HP1 proteins to methylated histones. SETDB1 contains an MBD
domain, a pre-SET, a SET, and a post-SET domain, and 2 Tudor domains; pre-SET, SET
and post-SET are required for methyltransferase activity. Isoform 2 lacks all methyltransferase
domains. The conserved SET domain is implicated in transcriptional modulation of active
or repressed chromatin through remodeling. Targeted to histone by TRIM28/TIF1B, SETDB1
contributes to euchromatic gene silencing by KRAB zinc-finger proteins and may interact
with ERG.;