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Su(var)3-3 | Possible lysine-specific histone demethylase 1; Probable histone demethylase that specifically demethylates 'Lys-4' of histone H3, a specific tag for epigenetic transcriptional activation, thereby acting as a corepressor. Required for heterochromatic gene silencing. Acts by oxidizing the substrate by FAD to generate the corresponding imine that is subsequently hydrolyzed. Demethylates both mono- and tri-methylated 'Lys-4' of histone H3. May also demethylate 'Lys-9' of histone H3, Plays a role in the repression of neuronal genes; Belongs to the flavin monoamine oxidase family. (890 aa) | ||||
His4:CG33901 | His4:CG33901 (His4:CG33901) encodes a histone H4 replacement variant that is part of the nucleosome core. It is the predominant histone H4 in non-dividing cells. Its amino acid sequence is identical to the cell-cycle regulated histone encoded by His4. (103 aa) |