Lysine (K)-specific demethylase 1B is a protein that in humans is encoded by the KDM1B gene. Flavin-dependent histone demethylases, such as KDM1B, regulate histone lysine methylation, an epigenetic mark that regulates gene expression and chromatin function. Histone demethylase that demethylates 'Lys-4' of histone H3, a specific tag for epigenetic transcriptional activation, thereby acting as a corepressor. Required for de novo DNA methylation of a subset of imprinted genes during oogenesis. Acts by oxidizing the substrate by FAD to generate the corresponding imine that is subsequently hydrolyzed. Demethylates both mono- and di-methylated 'Lys-4' of histone H3. Has no effect on tri-methylated 'Lys-4', mono-, di- or tri-methylated 'Lys-9', mono-, di- or tri-methylated 'Lys-27', mono-, di- or tri-methylated 'Lys-36' of histone H3, or on mono-, di- or tri-methylated 'Lys-20' of histone H4. Alone, it is unable to demethylate H3K4me on nucleosomes and requires the presence of GLYR1 to achieve such activity, they form a multifunctional enzyme complex that modifies transcribed chromatin and facilitates Pol II transcription through nucleosomes.
Background References
1. Costa DFD et al. Transcriptional deregulation of LSD1 and LSD2 is associated with cytogenetic risk in chronic lymphocytic leukemia. Leuk Lymphoma. 2022 Dec
2. Niwa H et al. Structure-Activity Relationship and In Silico Evaluation of cis- and trans-PCPA-Derived Inhibitors of LSD1 and LSD2. ACS Med Chem Lett. 2022 Aug
Western blot analysis of LSD2 on different lysates with Rabbit anti-LSD2 antibody (HA721462) at 1/1,000 dilution.
Lane 1: HeLa cell lysate Lane 2: Jurkat cell lysate Lane 3: A549 cell lysate Lane 4: K-562 cell lysate Lane 5: MCF7 cell lysate Lane 6: U-2 OS cell lysate Lane 7: HCT 116 cell lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 92 kDa Observed band size: 92 kDa
Exposure time: 1 minute;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721462) at 1/1,000 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1:100,000 dilution was used for 1 hour at room temperature.
☑ Knockdown (KD)
Western blot analysis of LSD2 on different lysates with Rabbit anti-LSD2 antibody (HA721462) at 1/2,000 dilution.
Lane 1: A549-si NT cell lysate Lane 2: A549-si LSD2 cell lysate
Lysates/proteins at 10 µg/Lane.
Predicted band size: 92 kDa Observed band size: 92 kDa
Exposure time: 3 minutes; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721462) at 1/2,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
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