4hsu

Structural highlights

Function

[KDM1B_HUMAN] 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 (By similarity). [GLYR1_HUMAN] May have oxidoreductase activity. Regulates p38 MAP kinase activity by mediating stress activation of p38alpha/MAPK14 and specifically regulating MAPK14 signaling. Indirectly promotes phosphorylation of MAPK14 and activation of ATF2. The phosphorylation of MAPK14 requires upstream activity of MAP2K4 and MAP2K6. Recruited on chromatin, recognizes and binds trimethylated 'Lys-36' of histone H3 (H3K36me3).^{[1] [2]}

See Also

• Lysine-specific histone demethylase

References

1. ↑ Fu J, Yang Z, Wei J, Han J, Gu J. Nuclear protein NP60 regulates p38 MAPK activity. J Cell Sci. 2006 Jan 1;119(Pt 1):115-23. Epub 2005 Dec 13. PMID:16352664 doi:10.1242/jcs.02699
2. ↑ Vermeulen M, Eberl HC, Matarese F, Marks H, Denissov S, Butter F, Lee KK, Olsen JV, Hyman AA, Stunnenberg HG, Mann M. Quantitative interaction proteomics and genome-wide profiling of epigenetic histone marks and their readers. Cell. 2010 Sep 17;142(6):967-80. doi: 10.1016/j.cell.2010.08.020. PMID:20850016 doi:10.1016/j.cell.2010.08.020