Lysine-
specific demethylase 1 (LSD1) belongs to the family of flavin adenine dinucleotide (FAD)-
dependent amine oxidases that include monoamine oxidases (MAOs) and polyamine oxidase (PAO).
1 LSD1 specifically demethylates mono- and dimethylated histone H3 lysine 4, resulting in transcriptional repression.
2 It also controls the tumor suppressor activity of p53 by demethylating a specific p53 lysine residue (LYS
370).
3 GSK-LSD1 is an irreversible, mechanism-based inhibitor of LSD1 (IC
50 = 16 nM) that is >1,000-fold selective over the closely related FAD-utilizing enzymes LSD2, MAO-A, and MAO-B.
4 GSK-LSD1 induces gene expression changes in various cancer cell lines, inhibiting their proliferation (EC
50s <5 nM).
4 See the
Structural Genomics Consortium (SGC) website for more information.