ID 2.1.1.355 DE [histone H3]-lysine(9) N-trimethyltransferase. CA L-lysyl(9)-[histone H3] + 3 S-adenosyl-L-methionine = N(6),N(6),N(6)- CA trimethyl-L-lysyl(9)-[histone H3] + 3 S-adenosyl-L-homocysteine + 3 H(+). CC -!- This entry describes several enzymes that successively methylate the CC L-lysine(9) residue of histone H3 (H3K9), ultimately generating a CC trimethylated form. CC -!- These modifications influence the binding of chromatin-associated CC proteins. CC -!- In general, the methylation of H3K9 leads to transcriptional CC repression of the affected target genes. cf. EC 2.1.1.366, CC EC 2.1.1.367 and EC 2.1.1.368. DR O60016, CLR4_SCHPO ; Q8X225, DIM5_NEUCR ; A0A1L7TZE5, KMT1_FUSMA ; DR Q13029, PRDM2_HUMAN; Q63755, PRDM2_RAT ; Q6P2A1, PRDM9_DANRE; DR Q9NQV7, PRDM9_HUMAN; Q96EQ9, PRDM9_MOUSE; P0C6Y7, PRDM9_RAT ; DR Q9U263, SET26_CAEEL; Q32KD2, SETB1_DROME; Q28Z18, SETB1_DROPS; DR P45975, SUV39_DROME; Q294B9, SUV39_DROPS; P20659, TRX_DROME ; DR Q24742, TRX_DROVI ; //