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Open data
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Basic information
| Entry | Database: PDB / ID: 9qqa | ||||||||||||
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| Title | Ternary complex of translating ribosome, NAC and NMT1 | ||||||||||||
Components |
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Keywords | RIBOSOME / Translation / co-translational protein processing | ||||||||||||
| Function / homology | Function and homology information[histone H4]-N-methyl-L-lysine20 N-methyltransferase / negative regulation of striated muscle cell apoptotic process / [histone H4]-lysine20 N-methyltransferase / histone H4K20 monomethyltransferase activity / regulation of skeletal muscle fiber development / myristoyltransferase activity / N-terminal peptidyl-glycine N-myristoylation / peptidyl-lysine N6-myristoyltransferase activity / positive regulation of cell proliferation involved in heart morphogenesis / Late Phase of HIV Life Cycle ...[histone H4]-N-methyl-L-lysine20 N-methyltransferase / negative regulation of striated muscle cell apoptotic process / [histone H4]-lysine20 N-methyltransferase / histone H4K20 monomethyltransferase activity / regulation of skeletal muscle fiber development / myristoyltransferase activity / N-terminal peptidyl-glycine N-myristoylation / peptidyl-lysine N6-myristoyltransferase activity / positive regulation of cell proliferation involved in heart morphogenesis / Late Phase of HIV Life Cycle / histone H4K20me methyltransferase activity / positive regulation of skeletal muscle tissue growth / ketone metabolic process / regulation of opsin-mediated signaling pathway / negative regulation of protein localization to endoplasmic reticulum / nascent polypeptide-associated complex / cardiac ventricle development / Activation, myristolyation of BID and translocation to mitochondria / positive regulation of protein localization to mitochondrion / glycylpeptide N-tetradecanoyltransferase / glycylpeptide N-tetradecanoyltransferase activity / heart trabecula morphogenesis / skeletal muscle tissue regeneration / S-adenosyl-L-methionine binding / protein localization to membrane / positive regulation of double-strand break repair via nonhomologous end joining / laminin receptor activity / Peptide chain elongation / Selenocysteine synthesis / Formation of a pool of free 40S subunits / Eukaryotic Translation Termination / SRP-dependent cotranslational protein targeting to membrane / Response of EIF2AK4 (GCN2) to amino acid deficiency / Viral mRNA Translation / ubiquitin ligase inhibitor activity / 90S preribosome / Nonsense Mediated Decay (NMD) independent of the Exon Junction Complex (EJC) / positive regulation of signal transduction by p53 class mediator / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / pericentric heterochromatin / Major pathway of rRNA processing in the nucleolus and cytosol / phagocytic cup / Nonsense Mediated Decay (NMD) enhanced by the Exon Junction Complex (EJC) / protein-RNA complex assembly / maturation of LSU-rRNA / eNOS activation / translation regulator activity / rough endoplasmic reticulum / ribosomal small subunit export from nucleus / laminin binding / gastrulation / MDM2/MDM4 family protein binding / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / cytosolic ribosome / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / DNA-(apurinic or apyrimidinic site) lyase / ribosomal large subunit biogenesis / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of apoptotic signaling pathway / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of SSU-rRNA / wound healing / small-subunit processome / spindle / Regulation of expression of SLITs and ROBOs / cytoplasmic ribonucleoprotein granule / rRNA processing / rhythmic process / positive regulation of canonical Wnt signaling pathway / regulation of translation / antimicrobial humoral immune response mediated by antimicrobial peptide / heparin binding / protein transport / Inactivation, recovery and regulation of the phototransduction cascade / large ribosomal subunit / ribosomal small subunit assembly / virus receptor activity / ribosome binding / ribosomal small subunit biogenesis / small ribosomal subunit / ribosomal large subunit assembly / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / methylation / killing of cells of another organism / cytosolic large ribosomal subunit / in utero embryonic development / defense response to Gram-negative bacterium / perikaryon / cytoplasmic translation / cell differentiation / tRNA binding / transcription coactivator activity / mitochondrial inner membrane / negative regulation of translation / postsynaptic density / rRNA binding / structural constituent of ribosome Similarity search - Function | ||||||||||||
| Biological species | Homo sapiens (human)![]() | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å | ||||||||||||
Authors | Echeverria, B. / Jaskolowski, M. / Scaiola, A. / Ban, N. | ||||||||||||
| Funding support | Switzerland, European Union, 3items
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Citation | Journal: Mol Cell / Year: 2025Title: Mechanism of cotranslational protein N-myristoylation in human cells. Authors: Martin Gamerdinger / Blanca Echeverria / Alfred M Lentzsch / Nicolas Burg / Ziyi Fan / Mateusz Jaskolowski / Alain Scaiola / Selina Piening / Shu-Ou Shan / Nenad Ban / Elke Deuerling / ![]() Abstract: N-myristoyltransferases (NMTs) cotranslationally transfer the fatty acid myristic acid to the N terminus of newly synthesized proteins, regulating their function and cellular localization. These ...N-myristoyltransferases (NMTs) cotranslationally transfer the fatty acid myristic acid to the N terminus of newly synthesized proteins, regulating their function and cellular localization. These enzymes are important drug targets for the treatment of cancer and viral infections. N-myristoylation of nascent proteins occurs specifically on N-terminal glycine residues after the excision of the initiator methionine by methionine aminopeptidases (METAPs). How NMTs interact with ribosomes and gain timely and specific access to their substrates remains unknown. Here, we show that human NMT1 exchanges with METAP1 at the ribosomal tunnel exit to form an active cotranslational complex together with the nascent polypeptide-associated complex (NAC). NMT1 binding is sequence selective and specifically triggered by methionine excision, which exposes the N-myristoylation motif in the nascent chain. The revealed mode of interaction of NMT1 with NAC and the methionine-cleaved nascent protein elucidates how a specific subset of proteins can be efficiently N-myristoylated in human cells. | ||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9qqa.cif.gz | 6.2 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb9qqa.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9qqa.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/qq/9qqa ftp://data.pdbj.org/pub/pdb/validation_reports/qq/9qqa | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 53295MC ![]() 9qqbC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
+RNA chain , 5 types, 5 molecules A2ATB5B7B8
+Small ribosomal subunit protein ... , 20 types, 20 molecules AAABAFAGAZAeAiAkAlAmAnAoApAqArAtAuAvAyAz
+Ubiquitin-ribosomal protein ... , 2 types, 2 molecules ACBm
+Protein , 8 types, 8 molecules ADAEAjBQBrMANtNu
+40S ribosomal protein ... , 10 types, 10 molecules AaAbAcAdAfAgAhAsAwAx
+Large ribosomal subunit protein ... , 9 types, 9 molecules BABCBLBOBPBSBXBoBs
+Ribosomal protein ... , 10 types, 10 molecules BBBFBNBRBVBWBYBeBjBv
+60S ribosomal protein ... , 21 types, 21 molecules BEBGBHBIBJBMBTBUBZBaBbBcBdBfBgBhBiBkBlBpBt
+Protein/peptide , 1 types, 1 molecules BK
+Non-polymers , 6 types, 2663 molecules 










+Details
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
| Component | Name: Ternary complex of translating ribosome, NAC and NMT1 / Type: RIBOSOME / Entity ID: #1-#86 / Source: NATURAL |
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| Source (natural) | Organism: ![]() |
| Buffer solution | pH: 7.6 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE-PROPANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2700 nm / Nominal defocus min: 700 nm |
| Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
| EM software | Name: PHENIX / Category: model refinement |
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
| 3D reconstruction | Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 87143 / Symmetry type: POINT |
| Refinement | Cross valid method: NONE |
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About Yorodumi




Homo sapiens (human)

Switzerland, European Union, 3items
Citation




PDBj














































FIELD EMISSION GUN