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J Biol Chem. 2010 Mar 26;285(13):9322-6. doi: 10.1074/jbc.C109.097667. Epub 2010 Feb 2.

Recognition of histone H3K4 trimethylation by the plant homeodomain of PHF2 modulates histone demethylation.

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  • 1Department of Biochemistry and Molecular Biology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA.

Abstract

Distinct lysine methylation marks on histones create dynamic signatures deciphered by the "effector" modules, although the underlying mechanisms remain unclear. We identified the plant homeodomain- and Jumonji C domain-containing protein PHF2 as a novel histone H3K9 demethylase. We show in biochemical and crystallographic analyses that PHF2 recognizes histone H3K4 trimethylation through its plant homeodomain finger and that this interaction is essential for PHF2 occupancy and H3K9 demethylation at rDNA promoters. Our study provides molecular insights into the mechanism by which distinct effector domains within a protein cooperatively modulate the "cross-talk" of histone modifications.

PMID:
20129925
[PubMed - indexed for MEDLINE]
PMCID:
PMC2843180
Free PMC Article
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