+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-50641 | |||||||||
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タイトル | Human NatA-MAP2 80S ribosome complex | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | co-translational processing / ribosome associated factor (RAF) / methionine aminopeptidase 2 (MAP2) / N-terminal methionine excision (NME) / N-acetyl-transferase A (NatA) / N-termional acetylation (NTA) / UBA domain / a-solenoid / protein-protein and protein-RNA interactions / TRANSLATION | |||||||||
機能・相同性 | 機能・相同性情報 negative regulation of maintenance of mitotic sister chromatid cohesion, centromeric / peptide-glutamate-alpha-N-acetyltransferase activity / N-terminal amino-acid Nalpha-acetyltransferase NatA / N-terminal protein amino acid acetylation / peptide-serine-alpha-N-acetyltransferase activity / NatA complex / peptide alpha-N-acetyltransferase activity / N-terminal protein amino acid modification / peptidyl-methionine modification / N-acetyltransferase activity ...negative regulation of maintenance of mitotic sister chromatid cohesion, centromeric / peptide-glutamate-alpha-N-acetyltransferase activity / N-terminal amino-acid Nalpha-acetyltransferase NatA / N-terminal protein amino acid acetylation / peptide-serine-alpha-N-acetyltransferase activity / NatA complex / peptide alpha-N-acetyltransferase activity / N-terminal protein amino acid modification / peptidyl-methionine modification / N-acetyltransferase activity / methionyl aminopeptidase / initiator methionyl aminopeptidase activity / eukaryotic 80S initiation complex / axial mesoderm development / metalloexopeptidase activity / 90S preribosome assembly / TORC2 complex binding / middle ear morphogenesis / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / regulation of translation involved in cellular response to UV / positive regulation of DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator / protein acetylation / internal protein amino acid acetylation / metalloaminopeptidase activity / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / Eukaryotic Translation Termination / Response of EIF2AK4 (GCN2) to amino acid deficiency / SRP-dependent cotranslational protein targeting to membrane / Viral mRNA Translation / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / chromosome organization / Major pathway of rRNA processing in the nucleolus and cytosol / protein-RNA complex assembly / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / aminopeptidase activity / rough endoplasmic reticulum / DNA damage response, signal transduction by p53 class mediator resulting in cell cycle arrest / cytosolic ribosome / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / ossification / ribosomal large subunit biogenesis / skeletal system development / positive regulation of translation / sensory perception of sound / cellular response to gamma radiation / mRNA 5'-UTR binding / protein processing / Regulation of expression of SLITs and ROBOs / cytoplasmic ribonucleoprotein granule / cellular response to UV / rRNA processing / Inactivation, recovery and regulation of the phototransduction cascade / ribosome binding / regulation of translation / ribosomal large subunit assembly / cell body / cytoplasmic translation / angiogenesis / cytosolic large ribosomal subunit / transcription regulator complex / postsynaptic density / cell differentiation / nuclear body / protein stabilization / rRNA binding / structural constituent of ribosome / cadherin binding / ribonucleoprotein complex / translation / intracellular membrane-bounded organelle / focal adhesion / mRNA binding / dendrite / synapse / regulation of DNA-templated transcription / negative regulation of apoptotic process / nucleolus / positive regulation of DNA-templated transcription / DNA binding / RNA binding / extracellular exosome / nucleoplasm / membrane / nucleus / metal ion binding / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
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: 2.69 Å | |||||||||
データ登録者 | Klein MA / Wild K / Sinning I | |||||||||
資金援助 | ドイツ, 1件
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引用 | ジャーナル: Nat Commun / 年: 2024 タイトル: Multi-protein assemblies orchestrate co-translational enzymatic processing on the human ribosome. 著者: Marius Klein / Klemens Wild / Irmgard Sinning / 要旨: Nascent chains undergo co-translational enzymatic processing as soon as their N-terminus becomes accessible at the ribosomal polypeptide tunnel exit (PTE). In eukaryotes, N-terminal methionine ...Nascent chains undergo co-translational enzymatic processing as soon as their N-terminus becomes accessible at the ribosomal polypeptide tunnel exit (PTE). In eukaryotes, N-terminal methionine excision (NME) by Methionine Aminopeptidases (MAP1 and MAP2), and N-terminal acetylation (NTA) by N-Acetyl-Transferase A (NatA), is the most common combination of subsequent modifications carried out on the 80S ribosome. How these enzymatic processes are coordinated in the context of a rapidly translating ribosome has remained elusive. Here, we report two cryo-EM structures of multi-enzyme complexes assembled on vacant human 80S ribosomes, indicating two routes for NME-NTA. Both assemblies form on the 80S independent of nascent chain substrates. Irrespective of the route, NatA occupies a non-intrusive 'distal' binding site on the ribosome which does not interfere with MAP1 or MAP2 binding nor with most other ribosome-associated factors (RAFs). NatA can partake in a coordinated, dynamic assembly with MAP1 through the hydra-like chaperoning function of the abundant Nascent Polypeptide-Associated Complex (NAC). In contrast to MAP1, MAP2 completely covers the PTE and is thus incompatible with NAC and MAP1 recruitment. Together, our data provide the structural framework for the coordinated orchestration of NME and NTA in protein biogenesis. | |||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_50641.map.gz | 727.3 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-50641-v30.xml emd-50641.xml | 31.9 KB 31.9 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_50641_fsc.xml | 23.7 KB | 表示 | FSCデータファイル |
画像 | emd_50641.png | 90.1 KB | ||
Filedesc metadata | emd-50641.cif.gz | 10.1 KB | ||
その他 | emd_50641_half_map_1.map.gz emd_50641_half_map_2.map.gz | 1.3 GB 1.3 GB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-50641 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-50641 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_50641_validation.pdf.gz | 1.3 MB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_50641_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | emd_50641_validation.xml.gz | 33.8 KB | 表示 | |
CIF形式データ | emd_50641_validation.cif.gz | 45.1 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-50641 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-50641 | HTTPS FTP |
-関連構造データ
関連構造データ | 9fpzMC 9fq0C M: このマップから作成された原子モデル C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-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_50641.map.gz / 形式: CCP4 / 大きさ: 1.4 GB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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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: 0.84 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: #1
ファイル | emd_50641_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_50641_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
+全体 : human NatA and MAP2 bound to the PTE of the 80S ribosome
+超分子 #1: human NatA and MAP2 bound to the PTE of the 80S ribosome
+分子 #1: N-alpha-acetyltransferase 10
+分子 #3: Methionine aminopeptidase 2
+分子 #4: N-alpha-acetyltransferase 15, NatA auxiliary subunit
+分子 #6: 60S ribosomal protein L4
+分子 #7: Large ribosomal subunit protein eL6
+分子 #8: 60S ribosomal protein L38
+分子 #9: Large ribosomal subunit protein uL24
+分子 #10: 60S ribosomal protein L35
+分子 #11: 60S ribosomal protein L23a
+分子 #12: 60S ribosomal protein L19
+分子 #13: 60S ribosomal protein L28
+分子 #2: 5.8S rRNA (58-MER)
+分子 #5: 28S rRNA
+分子 #14: COBALT (II) ION
+分子 #15: INOSITOL HEXAKISPHOSPHATE
-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
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | TFS KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 41.28 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 最大 デフォーカス(公称値): 2.3000000000000003 µm 最小 デフォーカス(公称値): 1.3 µm |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |