PR-SET domain found in PR domain zinc finger protein 7 (PRDM7) and 9 (PRDM9) and similar proteins
PRDM7 (also termed PR domain-containing protein 7) is a primate-specific histone methyltransferase that is the result of a recent gene duplication of PRDM9. It selectively catalyzes the trimethylation of H3 lysine 4 (H3K4me3). PRDM9 (also termed PR domain-containing protein 9) is a histone methyltransferase that specifically trimethylates 'Lys-4' of histone H3 (H3K4me3) during meiotic prophase and is essential for proper meiotic progression. It also efficiently mono-, di-, and trimethylates H3K36. Aberrant PRDM9 expression is assciated with with genome instability in cancer.