In embryonic stem (ES) cells, plays a crucial role in the differentiation potential, particularly along the neural lineage, regulating gene induction and H3 'Lys-4' methylation at key developmental loci, including that mediated by retinoic acid. Does not affect ES cell self-renewal. Component or associated component of some histone methyltransferase complexes which regulates transcription through recruitment of those complexes to gene promoters. As part of the MLL1/MLL complex, involved in mono-, di- and trimethylation at 'Lys-4' of histone H3. Histone H3 'Lys-4' methylation represents a specific tag for epigenetic transcriptional activation. In association with ASH2L and WDR5, stimulates the histone methyltransferase activities of KMT2A, KMT2B, KMT2C, KMT2D, SETD1A and SETD1B.
Background References
1. Avdic V., Zhang P., Lanouette S., Groulx A., Tremblay V., Brunzelle J., Couture J.F. Structural and biochemical insights into MLL1 core complex assembly. Structure 19:101-108(2011).
2. Zhang P., Lee H., Brunzelle J.S., Couture J.F. The plasticity of WDR5 peptide-binding cleft enables the binding of the SET1 family of histone methyltransferases. Nucleic Acids Res. 40:4237-4246(2012).
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: HA500395, 1/1,000 in 5% NFDM/TBST, overnight at 4 ℃ Secondary antibody: Goat anti-Rabbit IgG-HRP (HA1001), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 59 kDa
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