CHEMBL3707942

Biological Assay: Human recombinant MAO A and MAO B were expressed in Pichia pastoris and purified as published (Binda C, et al., Proc. Natl. Acad. Sci. USA 100: 9750-9755, 2003) Inhibition assays and Ki values were measured using kynuramine (MAO A) and benzylamine (MAO B) as substrates at pH 7.5 according to published procedures (Binda C, et al., Proc. Natl. Acad. Sci. USA 100: 9750-9755, 2003). Mouse recombinant LSD2 was expressed in E. coli and purified as described (Karytinos A, et al., J. Biol. Chem. 284:17775-17782, 2009). Human recombinant LSD1/CoREST were expressed in E. coli as separate proteins and co-purified following previously reported procedures (Forneris F, et al. Trends Biochem Sci 33:181-189, 2008). Enzymatic activities and inhibition assays with both demethylases were carried out at pH 7.5-8.0 using a methylated H3 peptide (Forneris F, et al., J. Biol. Chem. 282: 20070-20074 2007, Karytinos A, et al., J. Biol. Chem. 284:17775-17782, 2009).