文献类型： 外文期刊
作者： Latrasse, David 1 ; Jegu, Teddy 1 ; Meng, Pin-Hong 1 ; Mazubert, Christelle 1 ; Hudik, Elodie 1 ; Delarue, Marianne 1 ;
作者机构： 1.Univ Paris 11, Inst Biol Plantes, UMR8618, F-91405 Orsay, France
2.Guizhou Acad Agr Sci, Inst Hort, Guiyang 550006, Guizhou, Peoples R China
3.UPR CNRS, Inst Sci Vegetal, F-91198 Gif Sur Yvette, France
4.Univ Evry, CNRS, INRA, URGV Plant Genom, F-91057 Evry, France
期刊名称：NUCLEIC ACIDS RESEARCH （ 影响因子：16.971； 五年影响因子：15.542 ）
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收录情况： SCI
摘要： Because regulation of its activity is instrumental either to support cell proliferation and growth or to promote cell death, the universal myo-inositol phosphate synthase (MIPS), responsible for myo-inositol biosynthesis, is a critical enzyme of primary metabolism. Surprisingly, we found this enzyme to be imported in the nucleus and to interact with the histone methyltransferases ATXR5 and ATXR6, raising the question of whether MIPS1 has a function in transcriptional regulation. Here, we demonstratethat MIPS1 binds directly to its promoter to stimulate its own expression by locally inhibiting the spreading of ATXR5/6-dependent heterochromatin marks coming from a transposable element. Furthermore, on activation of pathogen response, MIPS1 expressionis reduced epigenetically, providing evidence for a complex regulatory mechanism acting at the transcriptional level. Thus, in plants, MIPS1 appears to have evolved as a protein that conriects cellular metabolism, pathogen response and chromatin remodeling.
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