| Structural highlights
Function
KMT5A_HUMAN Protein-lysine N-methyltransferase that monomethylates both histones and non-histone proteins. Specifically monomethylates 'Lys-20' of histone H4 (H4K20me1). H4K20me1 is enriched during mitosis and represents a specific tag for epigenetic transcriptional repression. Mainly functions in euchromatin regions, thereby playing a central role in the silencing of euchromatic genes. Required for cell proliferation, probably by contributing to the maintenance of proper higher-order structure of DNA during mitosis. Involved in chromosome condensation and proper cytokinesis. Nucleosomes are preferred as substrate compared to free histones. Mediates monomethylation of p53/TP53 at 'Lys-382', leading to repress p53/TP53-target genes. Plays a negative role in TGF-beta response regulation and a positive role in cell migration.[1] [2] [3] [4] [5] [6] [7] [8]
Publication Abstract from PubMed
Selective inhibitors of protein lysine methyltransferases, including SET domain-containing protein 8 (SETD8), are highly desired, as only a fraction of these enzymes are associated with high-quality inhibitors. From our previously discovered SETD8 inhibitor, we developed a more potent analog and solved a cocrystal structure, which is the first crystal structure of SETD8 in complex with a small-molecule inhibitor. This cocrystal structure allowed the design of a covalent inhibitor of SETD8 (MS453), which specifically modifies a cysteine residue near the inhibitor binding site, has an IC50 value of 804 nM, reacts with SETD8 with near-quantitative yield, and is selective for SETD8 against 28 other methyltransferases. We also solved the crystal structure of the covalent inhibitor in complex with SETD8. This work provides atomic-level perspective on the inhibition of SETD8 by small molecules and will help identify high-quality chemical probes of SETD8.
Structure-Based Design of a Covalent Inhibitor of the SET Domain-Containing Protein 8 (SETD8) Lysine Methyltransferase.,Butler KV, Ma A, Yu W, Li F, Tempel W, Babault N, Pittella-Silva F, Shao J, Wang J, Luo M, Vedadi M, Brown PJ, Arrowsmith CH, Jin J J Med Chem. 2016 Nov 10;59(21):9881-9889. doi: 10.1021/acs.jmedchem.6b01244. Epub, 2016 Nov 2. PMID:27804297[9]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Nishioka K, Rice JC, Sarma K, Erdjument-Bromage H, Werner J, Wang Y, Chuikov S, Valenzuela P, Tempst P, Steward R, Lis JT, Allis CD, Reinberg D. PR-Set7 is a nucleosome-specific methyltransferase that modifies lysine 20 of histone H4 and is associated with silent chromatin. Mol Cell. 2002 Jun;9(6):1201-13. PMID:12086618
- ↑ Fang J, Feng Q, Ketel CS, Wang H, Cao R, Xia L, Erdjument-Bromage H, Tempst P, Simon JA, Zhang Y. Purification and functional characterization of SET8, a nucleosomal histone H4-lysine 20-specific methyltransferase. Curr Biol. 2002 Jul 9;12(13):1086-99. PMID:12121615
- ↑ Julien E, Herr W. A switch in mitotic histone H4 lysine 20 methylation status is linked to M phase defects upon loss of HCF-1. Mol Cell. 2004 Jun 18;14(6):713-25. PMID:15200950 doi:https://dx.doi.org/10.1016/j.molcel.2004.06.008
- ↑ Xiao B, Jing C, Kelly G, Walker PA, Muskett FW, Frenkiel TA, Martin SR, Sarma K, Reinberg D, Gamblin SJ, Wilson JR. Specificity and mechanism of the histone methyltransferase Pr-Set7. Genes Dev. 2005 Jun 15;19(12):1444-54. Epub 2005 Jun 2. PMID:15933069 doi:https://dx.doi.org/10.1101/gad.1315905
- ↑ Couture JF, Collazo E, Brunzelle JS, Trievel RC. Structural and functional analysis of SET8, a histone H4 Lys-20 methyltransferase. Genes Dev. 2005 Jun 15;19(12):1455-65. Epub 2005 Jun 2. PMID:15933070 doi:10.1101/gad.1318405
- ↑ Sims JK, Houston SI, Magazinnik T, Rice JC. A trans-tail histone code defined by monomethylated H4 Lys-20 and H3 Lys-9 demarcates distinct regions of silent chromatin. J Biol Chem. 2006 May 5;281(18):12760-6. Epub 2006 Mar 3. PMID:16517599 doi:https://dx.doi.org/10.1074/jbc.M513462200
- ↑ Shi X, Kachirskaia I, Yamaguchi H, West LE, Wen H, Wang EW, Dutta S, Appella E, Gozani O. Modulation of p53 function by SET8-mediated methylation at lysine 382. Mol Cell. 2007 Aug 17;27(4):636-46. PMID:17707234 doi:https://dx.doi.org/10.1016/j.molcel.2007.07.012
- ↑ Abbas T, Mueller AC, Shibata E, Keaton M, Rossi M, Dutta A. CRL1-FBXO11 promotes Cdt2 ubiquitylation and degradation and regulates Pr-Set7/Set8-mediated cellular migration. Mol Cell. 2013 Mar 28;49(6):1147-58. doi: 10.1016/j.molcel.2013.02.003. Epub 2013, Mar 7. PMID:23478445 doi:https://dx.doi.org/10.1016/j.molcel.2013.02.003
- ↑ Butler KV, Ma A, Yu W, Li F, Tempel W, Babault N, Pittella-Silva F, Shao J, Wang J, Luo M, Vedadi M, Brown PJ, Arrowsmith CH, Jin J. Structure-Based Design of a Covalent Inhibitor of the SET Domain-Containing Protein 8 (SETD8) Lysine Methyltransferase. J Med Chem. 2016 Nov 10;59(21):9881-9889. doi: 10.1021/acs.jmedchem.6b01244. Epub, 2016 Nov 2. PMID:27804297 doi:https://dx.doi.org/10.1021/acs.jmedchem.6b01244
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