| Function | Histone methyltransferase that sequentially mono-, di-, and tri-methylates both 'Lys-4' (H3K4) and 'Lys-36' (H3K36) of histone H3 to produce respectively trimethylated 'Lys-4' (H3K4me3) and trimethylated 'Lys-36' (H3K36me3) histone H3 and plays a key role in meiotic prophase by determining hotspot localization thereby promoting meiotic recombination. Can also methylate all four core histones with H3 being the best substrate and the most highly modified. Is also able, on one hand, to mono and di-methylate H4K20 and on other hand to trimethylate H3K9 with the di-methylated H3K9 as the best substrate. During meiotic prophase, binds specific DNA sequences through its zinc finger domains thereby determining hotspot localization where it promotes local H3K4me3 and H3K36me3 enrichment on the same nucleosomes through its histone methyltransferase activity. Thereby promotes double-stranded breaks (DSB) formation, at this subset of PRDM9-binding sites, that initiates meiotic recombination for the proper meiotic progression. During meiotic progression hotspot-bound PRDM9 interacts with several complexes.in early leptonema binds CDYL and EHMT2 followed by EWSR1 and CXXC1 by the end of leptonema. EWSR1 joins PRDM9 with the chromosomal axis through REC8. In this way, controls the DSB repair pathway, pairing of homologous chromosomes and sex body formation. Moreover plays a central role in the transcriptional activation of genes during early meiotic prophase thanks to H3K4me3 and H3K36me3 enrichment that represents a specific tag for epigenetic transcriptional activation. In addition performs automethylation. Acetylation and phosphorylation of histone H3 attenuate or prevent histone H3 methylation. |
| Protein Name | Histone-Lysine N-Methyltransferase Prdm9Pr Domain Zinc Finger Protein 9Pr Domain-Containing Protein 9Protein-Lysine N-Methyltransferase Prdm9Histone H3-Lysine36 N-Trimethyltransferase Prdm9Histone H3-Lysine4 N-Trimethyltransferase Prdm9Histone H3-Lysine9 N-Trimethyltransferase Prdm9Histone H4-N-Methyl-L-Lysine20 N-Methyltransferase Prdm9Histone H4-Lysine20 N-Methyltransferase Prdm9 |
| Database Links | Reactome: R-HSA-3214841Reactome: R-HSA-912446 |
| Cellular Localisation | NucleusChromosomeLocalizes In Nuclei Of Pre-LeptoteneLeptoteneAnd Early To Mid-Zygotene Spermatocytes |
| Alternative Protein Names | Histone-Lysine N-Methyltransferase Prdm9 proteinPr Domain Zinc Finger Protein 9 proteinPr Domain-Containing Protein 9 proteinProtein-Lysine N-Methyltransferase Prdm9 proteinHistone H3-Lysine36 N-Trimethyltransferase Prdm9 proteinHistone H3-Lysine4 N-Trimethyltransferase Prdm9 proteinHistone H3-Lysine9 N-Trimethyltransferase Prdm9 proteinHistone H4-N-Methyl-L-Lysine20 N-Methyltransferase Prdm9 proteinHistone H4-Lysine20 N-Methyltransferase Prdm9 proteinPRDM9 proteinPFM6 protein |
Information sourced from Uniprot.org
