Structural insights into a novel histone demethylase PHF8
Structural insights into a novel histone demethylase PHF8
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新型组蛋白去甲基化酶 PHF8 的结构见解
DOI:
10.1038/cr.2010.8
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发表时间:
2010-01
期刊:
影响因子:
44.1
通讯作者:
Liu, Zhao
中科院分区:
文献类型:
--
作者:
Yu, Lin;Gong, Weimin;Chen, Zhongzhou;Wang, Yang;Huang, Shuo;Wang, Jianjun;Deng, Zengqin;Zhang, Qi;Wu, Wei;Zhang, Xingliang;Liu, Zhao
Dynamic regulation of histone methylation/demethylation plays an important role during development. Mutations and truncations in human plant homeodomain (PHD) finger protein 8 (PHF8) are associated with X-linked mental retardation and facial anomalies, such as a long face, broad nasal tip, cleft lip/cleft palate and large hands, yet its molecular function and structural basis remain unclear. Here, we report the crystal structures of the catalytic core of PHF8 with or without α-ketoglutarate (α-KG) at high resolution. Biochemical and structural studies reveal that PHF8 is a novel histone demethylase specific for di-and mono-methylated histone H3 lysine 9 (H3K9me2/1), but not for H3K9me3. Our analyses also reveal how human PHF8 discriminates between methylation states and achieves sequence specificity for methylated H3K9. The in vitro demethylation assay also showed that the F279S mutant observed in clinical patients possesses no demethylation activity, suggesting that loss of enzymatic activity is crucial for pathogenesis of PHF8 patients. Taken together, these results will shed light on the molecular mechanism underlying PHF8-associated developmental and neurological diseases.
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影响因子:
4.8
作者:
Elkins, JM;Hewitson, KS;Schofield, CJ
通讯作者:
Schofield, CJ
影响因子:
64.5
作者:
Chen, Zhongzhou;Zang, Jianye;Zhang, Gongyi
通讯作者:
Zhang, Gongyi
影响因子:
3.5
作者:
Abidi, F. E.;Miano, M. G.;Schwartz, C. E.
通讯作者:
Schwartz, C. E.
DOI:
--
发表时间:
2005
期刊:
--
影响因子:
--
作者:
J. Painter;E. Merritt
通讯作者:
J. Painter;E. Merritt
影响因子:
3.5
作者:
Qiao, Y.;Liu, X.;Lewis, M. E. S.
通讯作者:
Lewis, M. E. S.