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Open data
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Basic information
Entry | Database: PDB / ID: 9fq0 | |||||||||
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Title | Human NatA-NAC-MAP1 80S ribosome complex | |||||||||
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![]() | TRANSLATION / 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 | |||||||||
Function / homology | ![]() negative regulation of maintenance of mitotic sister chromatid cohesion, centromeric / negative regulation of protein localization to endoplasmic reticulum / nascent polypeptide-associated complex / negative regulation of striated muscle cell apoptotic process / regulation of skeletal muscle fiber development / protein-N-terminal-glutamate acetyltransferase activity / N-terminal amino-acid Nalpha-acetyltransferase NatA / positive regulation of cell proliferation involved in heart morphogenesis / N-terminal protein amino acid acetylation / NatA complex ...negative regulation of maintenance of mitotic sister chromatid cohesion, centromeric / negative regulation of protein localization to endoplasmic reticulum / nascent polypeptide-associated complex / negative regulation of striated muscle cell apoptotic process / regulation of skeletal muscle fiber development / protein-N-terminal-glutamate acetyltransferase activity / N-terminal amino-acid Nalpha-acetyltransferase NatA / positive regulation of cell proliferation involved in heart morphogenesis / N-terminal protein amino acid acetylation / NatA complex / positive regulation of skeletal muscle tissue growth / protein N-terminal-serine acetyltransferase activity / protein-N-terminal-alanine acetyltransferase activity / cardiac ventricle development / protein-N-terminal amino-acid acetyltransferase activity / internal protein amino acid acetylation / N-acetyltransferase activity / methionyl aminopeptidase / initiator methionyl aminopeptidase activity / heart trabecula morphogenesis / skeletal muscle tissue regeneration / translation at presynapse / metalloexopeptidase activity / acetyltransferase activator activity / eukaryotic 80S initiation complex / axial mesoderm development / 90S preribosome assembly / TORC2 complex binding / alpha-beta T cell differentiation / middle ear morphogenesis / protein 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 / chromosome organization / L13a-mediated translational silencing of Ceruloplasmin expression / aminopeptidase activity / 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) / rough endoplasmic reticulum / cytosolic ribosome / ossification / protein maturation / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / skeletal system development / sensory perception of sound / wound healing / platelet aggregation / Regulation of expression of SLITs and ROBOs / cytoplasmic ribonucleoprotein granule / Inactivation, recovery and regulation of the phototransduction cascade / protein transport / heparin binding / large ribosomal subunit / presynapse / regulation of translation / ribosome binding / cell body / angiogenesis / transcription regulator complex / cytosolic large ribosomal subunit / in utero embryonic development / cytoplasmic translation / cell differentiation / transcription coactivator activity / rRNA binding / postsynaptic density / protein stabilization / nuclear body / structural constituent of ribosome / cadherin binding / translation / ribonucleoprotein complex / focal adhesion / intracellular membrane-bounded organelle / mRNA binding / synapse / dendrite / regulation of DNA-templated transcription / negative regulation of apoptotic process / positive regulation of DNA-templated transcription / nucleolus / glutamatergic synapse / endoplasmic reticulum / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / proteolysis / DNA binding / RNA binding / extracellular exosome / zinc ion binding / identical protein binding Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.67 Å | |||||||||
![]() | Klein, M.A. / Wild, K. / Sinning, I. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Multi-protein assemblies orchestrate co-translational enzymatic processing on the human ribosome. Authors: Marius Klein / Klemens Wild / Irmgard Sinning / ![]() Abstract: 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. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 805.3 KB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.9 MB | Display | ![]() |
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Full document | ![]() | 2 MB | Display | |
Data in XML | ![]() | 128.4 KB | Display | |
Data in CIF | ![]() | 193.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 50642MC ![]() 9fpzC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-RNA chain , 2 types, 2 molecules 81
#1: RNA chain | Mass: 18646.127 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#4: RNA chain | Mass: 1640222.125 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein , 3 types, 3 molecules EDA
#2: Protein | Mass: 43717.605 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#3: Protein | Mass: 22201.000 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
#8: Protein | Mass: 23849.252 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-Large ribosomal subunit protein ... , 2 types, 2 molecules LYLE
#5: Protein | Mass: 17289.338 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#15: Protein | Mass: 32810.176 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-60S ribosomal protein ... , 7 types, 7 molecules LhLXLULRLkLCLr
#6: Protein | Mass: 14593.624 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#7: Protein | Mass: 17740.193 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#9: Protein | Mass: 14813.015 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#10: Protein | Mass: 23535.281 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#11: Protein | Mass: 8238.948 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#14: Protein | Mass: 47804.621 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
#16: Protein | Mass: 15784.622 Da / Num. of mol.: 1 / Source method: isolated from a natural source Details: SAHLQWMVVRNCSSFLIKRNKQTYSTEPNNLKARNSFRYNGLIHRKTVGVEPAADGKGVVVVIKRRSGQRKPATSYVRTTINKNARATLSSIRHMIRKN Source: (natural) ![]() |
-N-alpha-acetyltransferase ... , 2 types, 2 molecules 2B
#12: Protein | Mass: 20003.795 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: P41227, N-terminal amino-acid Nalpha-acetyltransferase NatA |
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#13: Protein | Mass: 98658.648 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-Non-polymers , 1 types, 1 molecules 
#17: Chemical | ChemComp-IHP / |
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-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: Human NatA-NAC-MAP1 80S ribosome complex / Type: COMPLEX / Entity ID: #1-#16 / Source: NATURAL |
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Source (natural) | Organism: ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Microscopy | Model: TFS GLACIOS |
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Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 1700 nm / Nominal defocus min: 700 nm |
Image recording | Electron dose: 53.97 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
EM software | Name: PHENIX / Version: 1.21_5207: / Category: model refinement |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3D reconstruction | Resolution: 4.67 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 24116 / Symmetry type: POINT |