The same pocket in menin binds both MLL and JUND but has opposite effects on transcription.
The same pocket in menin binds both MLL and JUND but has opposite effects on transcription.
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DOI:
10.1038/nature10806
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发表时间:
2012-02-12
期刊:
影响因子:
64.8
通讯作者:
Lei, Ming
中科院分区:
文献类型:
--
作者:
Huang, Jing;Gurung, Buddha;Wan, Bingbing;Matkar, Smita;Veniaminova, Natalia A.;Wan, Ke;Merchant, Juanita L.;Hua, Xianxin;Lei, Ming
Menin is a tumor suppressor protein whose loss or inactivation causes multiple endocrine neoplasia type 1 (MEN1), a hereditary autosomal dominant tumor syndrome characterized by tumorigenesis in multiple endocrine organs. Menin interacts with a multitude of proteins and involves in a variety of cellular processes. Menin binds the Jun family transcription factor JunD and inhibits its transcriptional activity. Several MEN1 missense mutations disrupted the menin-JunD interaction suggestive of a correlation between menin’s tumor suppressor function and its interaction with JunD and suppression of JunD activated transcription. Menin also interacts with mixed lineage leukemia protein 1 MLL1, a histone H3 lysine 4 (H3K4) methyltransferase, and functions as an oncogenic cofactor to upregulate gene (including HOX genes) transcription and promote MLL1 fusion protein (MFP)-induced leukemogenesis. A recent report on menin tethering MLL1 to chromatin binding factor LEDGF indicates menin as a molecular adaptor to coordinate the functions of multiple proteins. Despite the importance of menin, it still remains poorly understood how menin could interact with many distinct partners and control multiple functions. Here we present the crystal structures of menin, free and in complexes with MLL1 or JunD, or an MLL1-LEDGF heterodimer. These structures show that menin contains a deep pocket that binds short peptides of MLL1 or JunD in the same manner, but oppositely regulates transcription. The menin-JunD interaction blocks JNK kinase-meidated JunD phosphorylation, a crucial event for JunD activation.Moreover, menin functions as a scaffold molecule to promote gene transcription by binding MLL1 through the peptide-pocket yet interacting with LEDGF at a distinct surface.
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影响因子:
5.3
作者:
Yokoyama, A;Wang, Z;Cleary, ML
通讯作者:
Cleary, ML
影响因子:
16
作者:
Hughes, CM;Rozenblatt-Rosen, O;Meyerson, M
通讯作者:
Meyerson, M
影响因子:
64.5
作者:
Agarwal, SK;Guru, SC;Burns, AL
通讯作者:
Burns, AL
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
64.5
作者:
Yokoyama, A;Somervaille, TCP;Cleary, ML
通讯作者:
Cleary, ML