登録情報 データベース : EMDB / ID : EMD-43625 ダウンロードとリンクタイトル Human PRC2 - RvLEAM (short) (1:6 molar ratio), cross-linked 10 min マップデータ 詳細 試料複合体 : Human polycomb-repressive complex 2 (PRC2) 詳細 キーワード Human polycomb repressive complex 2 / RvLEAM / air-water-interface / DNA BINDING PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
protein localization to pericentric heterochromatin / hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / sex chromatin / CAF-1 complex / negative regulation of keratinocyte differentiation ... protein localization to pericentric heterochromatin / hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / sex chromatin / CAF-1 complex / negative regulation of keratinocyte differentiation / histone H3K27 trimethyltransferase activity / negative regulation of retinoic acid receptor signaling pathway / cerebellar cortex development / response to tetrachloromethane / primary miRNA binding / random inactivation of X chromosome / regulatory ncRNA-mediated heterochromatin formation / skeletal muscle satellite cell maintenance involved in skeletal muscle regeneration / histone H3K27 methyltransferase activity / negative regulation of cardiac muscle cell proliferation / facultative heterochromatin formation / ubiquitin-modified histone reader activity / positive regulation of cell cycle G1/S phase transition / negative regulation of cardiac muscle hypertrophy / NuRD complex / NURF complex / regulation of cell fate specification / negative regulation of stem cell population maintenance / DNA replication-dependent chromatin assembly / ESC/E(Z) complex / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / negative regulation of stem cell differentiation / regulation of stem cell differentiation / RSC-type complex / pronucleus / chromatin silencing complex / protein-lysine N-methyltransferase activity / Polo-like kinase mediated events / cardiac muscle hypertrophy in response to stress / Transcription of E2F targets under negative control by DREAM complex / G1 to G0 transition / positive regulation of dendrite development / cardiac muscle cell proliferation / histone H3 methyltransferase activity / synaptic transmission, GABAergic / histone methyltransferase complex / DNA methylation-dependent constitutive heterochromatin formation / lncRNA binding / histone methyltransferase activity / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / ATPase complex / negative regulation of gene expression, epigenetic / Sin3-type complex / G1/S-Specific Transcription / positive regulation of stem cell population maintenance / oligodendrocyte differentiation / Transcriptional Regulation by E2F6 / negative regulation of transcription elongation by RNA polymerase II / RNA Polymerase I Transcription Initiation / histone deacetylase complex / G0 and Early G1 / negative regulation of cell differentiation / positive regulation of protein serine/threonine kinase activity / subtelomeric heterochromatin formation / ribonucleoprotein complex binding / pericentric heterochromatin / positive regulation of epithelial to mesenchymal transition / Transcriptional regulation of brown and beige adipocyte differentiation by EBF2 / Cyclin E associated events during G1/S transition / RNA polymerase II core promoter sequence-specific DNA binding / nucleosome binding / Cyclin A:Cdk2-associated events at S phase entry / keratinocyte differentiation / spleen development / protein localization to chromatin / Regulation of TP53 Activity through Acetylation / : / Deposition of new CENPA-containing nucleosomes at the centromere / negative regulation of cytokine production involved in inflammatory response / positive regulation of GTPase activity / positive regulation of MAP kinase activity / B cell differentiation / SUMOylation of chromatin organization proteins / cellular response to leukemia inhibitory factor / enzyme activator activity / negative regulation of cell migration / liver development / thymus development / hippocampus development / central nervous system development / liver regeneration / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / ubiquitin binding / Regulation of PTEN gene transcription / PRC2 methylates histones and DNA / transcription corepressor binding / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) 類似検索 - 分子機能 : / Polycomb protein SUZ12-like, Zn domain / EZH2, SET domain / Polycomb protein, VEFS-Box / VEFS-Box of polycomb protein / Histone-lysine N-methyltransferase EZH1/EZH2 / Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain / Pre-SET CXC domain / : / WD repeat binding protein EZH2 ... : / Polycomb protein SUZ12-like, Zn domain / EZH2, SET domain / Polycomb protein, VEFS-Box / VEFS-Box of polycomb protein / Histone-lysine N-methyltransferase EZH1/EZH2 / Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain / Pre-SET CXC domain / : / WD repeat binding protein EZH2 / Polycomb repressive complex 2 tri-helical domain / CXC domain / Ezh2, MCSS domain / Tesmin/TSO1-like CXC domain / Tesmin/TSO1-like CXC domain / CXC domain / Histone-lysine N-methyltransferase EZH1/2-like / CXC domain profile. / Histone-binding protein RBBP4, N-terminal / Histone-binding protein RBBP4 or subunit C of CAF1 complex / : / : / Zinc finger, C5HC2-type / C5HC2 zinc finger / ARID DNA-binding domain / ARID DNA-binding domain superfamily / ARID/BRIGHT DNA binding domain / ARID domain profile. / BRIGHT, ARID (A/T-rich interaction domain) domain / ARID/BRIGHT DNA binding domain / JmjN domain / jmjN domain / JmjN domain profile. / Small domain found in the jumonji family of transcription factors / SET (Su(var)3-9, Enhancer-of-zeste, Trithorax) domain / SET domain / JmjC domain, hydroxylase / SET domain superfamily / SET domain profile. / SET domain / SANT SWI3, ADA2, N-CoR and TFIIIB'' DNA-binding domains / A domain family that is part of the cupin metalloenzyme superfamily. / JmjC domain / JmjC domain profile. / SANT/Myb domain / zinc finger / Zinc finger C2H2 type domain profile. / Zinc finger C2H2 superfamily / Zinc finger C2H2 type domain signature. / Zinc finger C2H2-type / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily 類似検索 - ドメイン・相同性 Polycomb protein EED / Histone-binding protein RBBP4 / Polycomb protein SUZ12 / Histone-lysine N-methyltransferase EZH2 / Zinc finger protein AEBP2 / Protein Jumonji 類似検索 - 構成要素生物種 Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.1 Å 詳細 データ登録者Abe KM / Li G / Grant T / Lim CJ 資金援助 米国, 3件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) T32 GM130550 米国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R00GM131023 米国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) DP2GM150023 米国
引用ジャーナル : Nat Commun / 年 : 2024タイトル : Small LEA proteins mitigate air-water interface damage to fragile cryo-EM samples during plunge freezing.著者 : Kaitlyn M Abe / Gan Li / Qixiang He / Timothy Grant / Ci Ji Lim / 要旨 : Air-water interface (AWI) interactions during cryo-electron microscopy (cryo-EM) sample preparation cause significant sample loss, hindering structural biology research. Organisms like nematodes and ... Air-water interface (AWI) interactions during cryo-electron microscopy (cryo-EM) sample preparation cause significant sample loss, hindering structural biology research. Organisms like nematodes and tardigrades produce Late Embryogenesis Abundant (LEA) proteins to withstand desiccation stress. Here we show that these LEA proteins, when used as additives during plunge freezing, effectively mitigate AWI damage to fragile multi-subunit molecular samples. The resulting high-resolution cryo-EM maps are comparable to or better than those obtained using existing AWI damage mitigation methods. Cryogenic electron tomography reveals that particles are localized at specific interfaces, suggesting LEA proteins form a barrier at the AWI. This interaction may explain the observed sample-dependent preferred orientation of particles. LEA proteins offer a simple, cost-effective, and adaptable approach for cryo-EM structural biologists to overcome AWI-related sample damage, potentially revitalizing challenging projects and advancing the field of structural biology. 履歴 登録 2024年2月5日 - ヘッダ(付随情報) 公開 2024年9月4日 - マップ公開 2024年9月4日 - 更新 2024年12月18日 - 現状 2024年12月18日 処理サイト : RCSB / 状態 : 公開
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