这个基因编码的蛋白质是组蛋白甲基转移酶，它使组蛋白h3的赖氨酸-79甲基化。它对游离核心组蛋白不起作用，但对核小体显示出显著的组蛋白甲基转移酶活性。[由RefSeq提供，2011年8月]
The protein encoded by this gene is a histone methyltransferase that methylates lysine-79 of histone H3. It is inactive against free core histones, but shows significant histone methyltransferase activity against nucleosomes. [provided by RefSeq, Aug 2011]