+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-10151 | |||||||||
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タイトル | CENP-A nucleosome | |||||||||
マップデータ | CENP-A nucleosome | |||||||||
試料 |
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キーワード | CENP-A / nucleosome / centromere / centromeric chromatin / NUCLEAR PROTEIN | |||||||||
機能・相同性 | 機能・相同性情報 CENP-A containing chromatin assembly / protein localization to chromosome, centromeric region / kinetochore assembly / condensed chromosome, centromeric region / establishment of mitotic spindle orientation / mitotic cytokinesis / chromosome, centromeric region / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal ...CENP-A containing chromatin assembly / protein localization to chromosome, centromeric region / kinetochore assembly / condensed chromosome, centromeric region / establishment of mitotic spindle orientation / mitotic cytokinesis / chromosome, centromeric region / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / Replacement of protamines by nucleosomes in the male pronucleus / pericentric heterochromatin / CENP-A containing nucleosome / Packaging Of Telomere Ends / Mitotic Prometaphase / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / EML4 and NUDC in mitotic spindle formation / Deposition of new CENPA-containing nucleosomes at the centromere / nucleosomal DNA binding / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Inhibition of DNA recombination at telomere / Resolution of Sister Chromatid Cohesion / telomere organization / Meiotic synapsis / RNA Polymerase I Promoter Opening / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / Assembly of the ORC complex at the origin of replication / SUMOylation of chromatin organization proteins / DNA methylation / Regulation of endogenous retroelements by KRAB-ZFP proteins / Condensation of Prophase Chromosomes / SIRT1 negatively regulates rRNA expression / HCMV Late Events / Chromatin modifications during the maternal to zygotic transition (MZT) / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / innate immune response in mucosa / PRC2 methylates histones and DNA / Defective pyroptosis / HDACs deacetylate histones / Nonhomologous End-Joining (NHEJ) / RHO GTPases Activate Formins / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / NoRC negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / G2/M DNA damage checkpoint / HDMs demethylate histones / B-WICH complex positively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / heterochromatin formation / PKMTs methylate histone lysines / Metalloprotease DUBs / Meiotic recombination / Pre-NOTCH Transcription and Translation / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / Transcriptional regulation of granulopoiesis / structural constituent of chromatin / Separation of Sister Chromatids / UCH proteinases / antimicrobial humoral immune response mediated by antimicrobial peptide / nucleosome / nucleosome assembly / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / antibacterial humoral response / chromatin organization / RUNX1 regulates transcription of genes involved in differentiation of HSCs / HATs acetylate histones / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / Estrogen-dependent gene expression / chromosome, telomeric region / Ub-specific processing proteases / defense response to Gram-positive bacterium / protein heterodimerization activity / Amyloid fiber formation / chromatin binding / protein-containing complex / DNA binding / RNA binding / extracellular space / extracellular exosome / extracellular region / nucleoplasm / identical protein binding / membrane / nucleus / cytosol 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) / synthetic construct (人工物) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.8 Å | |||||||||
データ登録者 | Ali-Ahmad A / Bilokapic S | |||||||||
資金援助 | ノルウェー, ドイツ, 2件
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引用 | ジャーナル: EMBO Rep / 年: 2019 タイトル: CENP-C unwraps the human CENP-A nucleosome through the H2A C-terminal tail. 著者: Ahmad Ali-Ahmad / Silvija Bilokapić / Ingmar B Schäfer / Mario Halić / Nikolina Sekulić / 要旨: Centromeres are defined epigenetically by nucleosomes containing the histone H3 variant CENP-A, upon which the constitutive centromere-associated network of proteins (CCAN) is built. CENP-C is ...Centromeres are defined epigenetically by nucleosomes containing the histone H3 variant CENP-A, upon which the constitutive centromere-associated network of proteins (CCAN) is built. CENP-C is considered to be a central organizer of the CCAN. We provide new molecular insights into the structure of human CENP-A nucleosomes, in isolation and in complex with the CENP-C central region (CENP-C ), the main CENP-A binding module of human CENP-C. We establish that the short αN helix of CENP-A promotes DNA flexibility at the nucleosome ends, independently of the sequence it wraps. Furthermore, we show that, in vitro, two regions of human CENP-C (CENP-C and CENP-C ) both bind exclusively to the CENP-A nucleosome. We find CENP-C to bind with high affinity due to an extended hydrophobic area made up of CENP-A and CENP-A . Importantly, we identify two key conformational changes within the CENP-A nucleosome upon CENP-C binding. First, the loose DNA wrapping of CENP-A nucleosomes is further exacerbated, through destabilization of the H2A C-terminal tail. Second, CENP-C rigidifies the N-terminal tail of H4 in the conformation favoring H4 monomethylation, essential for a functional centromere. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_10151.map.gz | 49.3 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-10151-v30.xml emd-10151.xml | 18 KB 18 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_10151.png | 71.1 KB | ||
Filedesc metadata | emd-10151.cif.gz | 6 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-10151 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-10151 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_10151_validation.pdf.gz | 525.3 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_10151_full_validation.pdf.gz | 524.8 KB | 表示 | |
XML形式データ | emd_10151_validation.xml.gz | 5.8 KB | 表示 | |
CIF形式データ | emd_10151_validation.cif.gz | 6.6 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10151 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10151 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_10151.map.gz / 形式: CCP4 / 大きさ: 52.7 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | CENP-A nucleosome | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
+全体 : CENP-A nucleosome
+超分子 #1: CENP-A nucleosome
+超分子 #2: CENP-A nucleosome
+超分子 #3: DNA
+分子 #1: Histone H3-like centromeric protein A
+分子 #2: Histone H4
+分子 #3: Histone H2A type 2-A
+分子 #4: Histone H2B type 1-C/E/F/G/I
+分子 #5: Histone H2A type 2-A
+分子 #6: DNA (145-MER)
+分子 #7: DNA (145-MER)
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
濃度 | 1.2 mg/mL |
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緩衝液 | pH: 7.5 |
グリッド | モデル: Quantifoil R2/1 / 材質: COPPER / 支持フィルム - 材質: CARBON |
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 100.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: PDB ENTRY |
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最終 再構成 | 想定した対称性 - 点群: C1 (非対称) / 解像度のタイプ: BY AUTHOR / 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 170000 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |