3kqi

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Template:STRUCTURE 3kqi

Contents 1 crystal structure of PHF2 PHD domain complexed with H3K4Me3 peptide 2 Function 3 About this Structure 4 Reference

crystal structure of PHF2 PHD domain complexed with H3K4Me3 peptide

Template:ABSTRACT PUBMED 20129925

Function

[PHF2_HUMAN] Lysine demethylase that demethylates both histones and non-histone proteins. Enzymatically inactive by itself, and becomes active following phosphorylation by PKA: forms a complex with ARID5B and mediates demethylation of methylated ARID5B. Demethylation of ARID5B leads to target the PHF2-ARID5B complex to target promoters, where PHF2 mediates demethylation of dimethylated 'Lys-9' of histone H3 (H3K9me2), followed by transcription activation of target genes. The PHF2-ARID5B complex acts as a coactivator of HNF4A in liver. PHF2 is recruited to trimethylated 'Lys-4' of histone H3 (H3K4me3) at rDNA promoters and promotes expression of rDNA.^{[1] [2] [3]}

About this Structure

3kqi is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

• Wen H, Li J, Song T, Lu M, Kan PY, Lee MG, Sha B, Shi X. Recognition of histone H3K4 trimethylation by the plant homeodomain of PHF2 modulates histone demethylation. J Biol Chem. 2010 Mar 26;285(13):9322-6. Epub 2010 Feb 2. PMID:20129925 doi:10.1074/jbc.C109.097667

1. ↑ Baba A, Ohtake F, Okuno Y, Yokota K, Okada M, Imai Y, Ni M, Meyer CA, Igarashi K, Kanno J, Brown M, Kato S. PKA-dependent regulation of the histone lysine demethylase complex PHF2-ARID5B. Nat Cell Biol. 2011 Jun;13(6):668-75. doi: 10.1038/ncb2228. Epub 2011 May 1. PMID:21532585 doi:10.1038/ncb2228
2. ↑ Wen H, Li J, Song T, Lu M, Kan PY, Lee MG, Sha B, Shi X. Recognition of histone H3K4 trimethylation by the plant homeodomain of PHF2 modulates histone demethylation. J Biol Chem. 2010 Mar 26;285(13):9322-6. Epub 2010 Feb 2. PMID:20129925 doi:10.1074/jbc.C109.097667
3. ↑ Horton JR, Upadhyay AK, Hashimoto H, Zhang X, Cheng X. Structural Basis for Human PHF2 Jumonji Domain Interaction with Metal Ions. J Mol Biol. 2010 Dec 15. PMID:21167174 doi:10.1016/j.jmb.2010.12.013