- EMDB-51338: Cryo-EM structure of KBTBD4 WT-HDAC2 2:2 complex mediated by mole... -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: EMDB / ID: EMD-51338
タイトル
Cryo-EM structure of KBTBD4 WT-HDAC2 2:2 complex mediated by molecular glue UM171
マップデータ
FSC-calculated nominal resolution is 2.9 angstrom. Practical resolution on manual inspection is closer to 4 angstrom in some local areas. The DeepEMhancer map was generated and used for model building
試料
複合体: KBTBD4 WT-HDAC2 2:2 complex mediated by molecular glue UM171
タンパク質・ペプチド: Isoform 1 of Kelch repeat and BTB domain-containing protein 4
ジャーナル: Nat Commun / 年: 2025 タイトル: Structural mimicry of UM171 and neomorphic cancer mutants co-opts E3 ligase KBTBD4 for HDAC1/2 recruitment. 著者: Zhuoyao Chen / Gamma Chi / Timea Balo / Xiangrong Chen / Beatriz Ralsi Montes / Steven C Clifford / Vincenzo D'Angiolella / Timea Szabo / Arpad Kiss / Tibor Novak / András Herner / András ...著者: Zhuoyao Chen / Gamma Chi / Timea Balo / Xiangrong Chen / Beatriz Ralsi Montes / Steven C Clifford / Vincenzo D'Angiolella / Timea Szabo / Arpad Kiss / Tibor Novak / András Herner / András Kotschy / Alex N Bullock / 要旨: Neomorphic mutations and drugs can elicit unanticipated effects that require mechanistic understanding to inform clinical practice. Recurrent indel mutations in the Kelch domain of the KBTBD4 E3 ...Neomorphic mutations and drugs can elicit unanticipated effects that require mechanistic understanding to inform clinical practice. Recurrent indel mutations in the Kelch domain of the KBTBD4 E3 ligase rewire epigenetic programs for stemness in medulloblastoma by recruiting LSD1-CoREST-HDAC1/2 complexes as neo-substrates for ubiquitination and degradation. UM171, an investigational drug for haematopoietic stem cell transplantation, was found to degrade LSD1-CoREST-HDAC1/2 complexes in a wild-type KBTBD4-dependent manner, suggesting a potential common mode of action. Here, we identify that these neomorphic interactions are mediated by the HDAC deacetylase domain. Cryo-EM studies of both wild-type and mutant KBTBD4 capture 2:1 and 2:2 KBTBD4-HDAC2 complexes, as well as a 2:1:1 KBTBD4-HDAC2-CoREST1 complex, at resolutions spanning 2.7 to 3.3 Å. The mutant and drug-induced complexes adopt similar structural assemblies requiring both Kelch domains in the KBTBD4 dimer for each HDAC2 interaction. UM171 is identified as a bona fide molecular glue binding across the ternary interface. Most strikingly, the indel mutation reshapes the same surface of KBTBD4 providing an example of a natural mimic of a molecular glue. Together, the structures provide mechanistic understanding of neomorphic KBTBD4, while structure-activity relationship (SAR) analysis of UM171 reveals analog S234984 as a more potent molecular glue for future studies.
#218 - 2018年2月 EPSP合成酵素と除草剤 (EPSP Synthase and Weedkillers) 類似性 (1)
#241 - 2020年1月 20年の分子を振り返って (Twenty Years of Molecules) 類似性 (4)
-
マップ
ファイル
ダウンロード / ファイル: emd_51338.map.gz / 形式: CCP4 / 大きさ: 178 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
FSC-calculated nominal resolution is 2.9 angstrom. Practical resolution on manual inspection is closer to 4 angstrom in some local areas. The DeepEMhancer map was generated and used for model building