Polycomb group (PcG) protein. Catalytic subunit of the PRC2/EED-EZH1 complex, which methylates 'Lys-27' of histone H3, leading to transcriptional repression of the affected target gene. Able to mono-, di- and trimethylate 'Lys-27' of histone H3 to form H3K27me1, H3K27me2 and H3K27me3, respectively. Required for embryonic stem cell derivation and self-renewal, suggesting that it is involved in safeguarding embryonic stem cell identity. Compared to EZH2-containing complexes, it is less abundant in embryonic stem cells, has weak methyltransferase activity and plays a less critical role in forming H3K27me3, which is required for embryonic stem cell identity and proper differentiation
Background References
1. Margueron R. et. al. Ezh1 and Ezh2 maintain repressive chromatin through different mechanisms. Mol. Cell 32:503-518(2008).
Western blot analysis of EZH1 on different lysates with Rabbit anti-EZH1 antibody (HA500184) at 1/1,000 dilution.
Lane 1: Hep G2 (Human hepatocellular carcinoma cell) cell lysate (15 µg/Lane) Lane 2: Mouse hippocampus tissue lysate (30 µg/Lane) Lane 3: Rat brain tissue lysate (30 µg/Lane)
Exposure time: 25 seconds; ECL: K1801
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: HA500184, 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: 85 kDa Observed band size: 69-100 kDa
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