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Yorodumi- PDB-9ndp: Structure of stalled ribosome and nascent chain in complex with N... -
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Basic information
| Entry | Database: PDB / ID: 9ndp | ||||||
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| Title | Structure of stalled ribosome and nascent chain in complex with NMT2 and NAC | ||||||
Components |
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Keywords | RIBOSOME / protein synthesis / N-glycine myristoylation / NMT2 / NAC | ||||||
| Function / homology | Function and homology informationpostsynaptic cytoskeleton / Acetylcholine regulates insulin secretion / positive regulation of vascular wound healing / positive regulation of protein acetylation / ATF6-mediated unfolded protein response / organelle / outer dense fiber / intracellular transport of virus / negative regulation of striated muscle cell apoptotic process / regulation of skeletal muscle fiber development ...postsynaptic cytoskeleton / Acetylcholine regulates insulin secretion / positive regulation of vascular wound healing / positive regulation of protein acetylation / ATF6-mediated unfolded protein response / organelle / outer dense fiber / intracellular transport of virus / negative regulation of striated muscle cell apoptotic process / regulation of skeletal muscle fiber development / peptidyl-lysine N6-myristoyltransferase activity / sterol homeostasis / N-terminal peptidyl-glycine N-myristoylation / positive regulation of cell proliferation involved in heart morphogenesis / IRE1alpha activates chaperones / positive regulation of skeletal muscle tissue growth / ATF6 (ATF6-alpha) activates chaperone genes / positive regulation of plasma cell differentiation / regulation of opsin-mediated signaling pathway / positive regulation of phospholipid biosynthetic process / ventricular cardiac muscle tissue development / negative regulation of myotube differentiation / positive regulation of ERAD pathway / intracellular triglyceride homeostasis / cardiac ventricle development / negative regulation of protein localization to endoplasmic reticulum / nascent polypeptide-associated complex / heart trabecula morphogenesis / positive regulation of hepatocyte proliferation / actin crosslink formation / cellular response to fructose stimulus / positive regulation of lactation / cellular response to fluid shear stress / glycylpeptide N-tetradecanoyltransferase / glycylpeptide N-tetradecanoyltransferase activity / cellular response to laminar fluid shear stress / chromatoid body / XBP1(S) activates chaperone genes / regulation of modification of postsynaptic actin cytoskeleton / positive regulation of dendritic spine morphogenesis / skeletal muscle tissue regeneration / endothelial cell proliferation / cellular response to nutrient / positive regulation of MHC class II biosynthetic process / dendritic branch / neural tube development / germinal vesicle / positive regulation of vascular associated smooth muscle cell migration / negative regulation of endoplasmic reticulum unfolded protein response / protein localization to membrane / positive regulation of cytokine production involved in inflammatory response / cellular response to peptide hormone stimulus / positive regulation of B cell differentiation / muscle organ development / positive regulation of T cell differentiation / phosphatidylserine binding / cell-substrate adhesion / positive regulation of immunoglobulin production / IRE1-mediated unfolded protein response / adipose tissue development / cellular response to interleukin-4 / negative regulation of SMAD protein signal transduction / actin filament bundle / cellular response to vascular endothelial growth factor stimulus / Dengue Virus Genome Translation and Replication / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / ubiquitin-like protein ligase binding / actin filament bundle assembly / neuron development / positive regulation of endothelial cell apoptotic process / fatty acid homeostasis / positive regulation of fat cell differentiation / vascular endothelial growth factor receptor signaling pathway / positive regulation of insulin receptor signaling pathway / positive regulation of TOR signaling / response to insulin-like growth factor stimulus / ubiquitin ligase inhibitor activity / negative regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway / 90S preribosome / positive regulation of signal transduction by p53 class mediator / cellular response to glucose starvation / positive regulation of vascular associated smooth muscle cell proliferation / cis-regulatory region sequence-specific DNA binding / neurogenesis / presynaptic cytosol / phagocytic cup / gastrulation / eNOS activation / endoplasmic reticulum unfolded protein response / ERAD pathway / cholesterol homeostasis / translation regulator activity / rough endoplasmic reticulum / ribosomal small subunit export from nucleus / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / MDM2/MDM4 family protein binding / liver development / positive regulation of autophagy / Membrane binding and targetting of GAG proteins / response to endoplasmic reticulum stress Similarity search - Function | ||||||
| Biological species | Homo sapiens (human)![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.82 Å | ||||||
Authors | Zdancewicz, S. / Jomaa, A. | ||||||
| Funding support | 1items
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Citation | Journal: EMBO J / Year: 2025Title: NAC couples protein synthesis with nascent polypeptide myristoylation on the ribosome. Authors: Sara Zdancewicz / Emir Maldosevic / Kinga Malezyna / Ahmad Jomaa / ![]() Abstract: N-glycine myristoylation allows for reversible association of newly synthesized proteins with membranes to regulate essential functions such as cellular signaling and stress responses. This process ...N-glycine myristoylation allows for reversible association of newly synthesized proteins with membranes to regulate essential functions such as cellular signaling and stress responses. This process can be catalyzed during protein synthesis by N-myristoyltransferases (NMTs), and its dysregulation has been implicated both in cancer and heart disease. Although the nascent polypeptide-associated complex (NAC) orchestrates the binding of several co-translational processing factors on ribosomes, its role in facilitating nascent protein myristoylation by NMT2 remains unclear. Here, we show that NAC mediates binding of NMT2 to translating ribosomes, which together form an extended channel that guides the nascent chain as it emerges from the polypeptide exit tunnel to the catalytic site of NMT2. Furthermore, the ternary ribosome:NMT2:NAC complex is stabilized by a ribosomal RNA clamp that, together with NAC, orients NMT2 on the ribosomal surface for co-translational myristoylation of nascent chains. Our work uncovers the molecular mechanism coupling protein synthesis to nascent protein myristoylation and underscores the role of NAC as a master regulator of protein biogenesis on the ribosome. | ||||||
| History |
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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 | 9ndp.cif.gz | 5.4 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb9ndp.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9ndp.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/nd/9ndp ftp://data.pdbj.org/pub/pdb/validation_reports/nd/9ndp | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 49275MC 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
-Ribosomal protein ... , 17 types, 17 molecules 0ABJNQRVjowyDDEEQQTTFF
| #1: Protein | Mass: 18004.041 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #6: Protein | Mass: 28088.863 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #7: Protein | Mass: 46107.977 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #14: Protein | Mass: 20288.465 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #18: Protein | Mass: 24207.285 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #21: Protein | Mass: 21721.713 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #22: Protein | Mass: 21715.164 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #26: Protein | Mass: 14892.505 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #39: Protein | Mass: 11111.032 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #44: Protein | Mass: 16130.169 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #50: Protein | Mass: 26715.344 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() References: UniProt: G1TNM3, DNA-(apurinic or apyrimidinic site) lyase |
| #60: Protein | Mass: 22913.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #63: Protein | Mass: 22641.564 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #65: Protein | Mass: 18468.826 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #67: Protein | Mass: 17259.389 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #76: Protein | Mass: 14865.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #82: Protein | Mass: 7855.052 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-RNA chain , 6 types, 6 molecules 47K258
| #2: RNA chain | Mass: 1877.157 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
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| #4: RNA chain | Mass: 38691.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #15: RNA chain | Mass: 548040.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #55: RNA chain | Mass: 24414.496 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #56: RNA chain | Mass: 1145287.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #57: RNA chain | Mass: 48545.672 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+Protein , 32 types, 32 molecules 69LTUWXYcdfhlmpqrxsSSWWUUKKIIPPGGVVOOEFEGNANB
-60S ribosomal protein ... , 13 types, 13 molecules CGHIMSZaegitE
| #8: Protein | Mass: 46388.855 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #11: Protein | Mass: 36221.516 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #12: Protein | Mass: 21871.418 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #13: Protein | Mass: 24643.057 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #17: Protein | Mass: 23870.549 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #23: Protein | Mass: 20661.338 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #30: Protein | Mass: 15835.831 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #31: Protein | Mass: 16620.561 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #34: Protein | Mass: 15767.736 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #36: Protein | Mass: 13326.074 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #38: Protein | Mass: 12263.834 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #54: Protein | Mass: 17847.619 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #58: Protein | Mass: 33028.336 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Large ribosomal subunit protein ... , 6 types, 6 molecules DFOPkb
| #9: Protein | Mass: 34481.828 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #10: Protein | Mass: 29514.250 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #19: Protein | Mass: 23533.299 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #20: Protein | Mass: 21444.221 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #40: Protein | Mass: 12047.495 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #59: Protein | Mass: 26708.707 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein/peptide , 1 types, 1 molecules n
| #43: Protein/peptide | Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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-40S ribosomal protein ... , 7 types, 7 molecules uzBBCCRRJJAA
| #48: Protein | Mass: 30002.061 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #52: Protein | Mass: 28751.906 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #61: Protein | Mass: 22168.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #62: Protein | Mass: 24263.387 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #66: Protein | Mass: 14538.987 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #81: Protein | Mass: 9480.186 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #83: Protein | Mass: 14498.884 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Small ribosomal subunit protein ... , 5 types, 5 molecules vMMHHNNLL
| #49: Protein | Mass: 27502.170 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #68: Protein | Mass: 16302.772 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #75: Protein | Mass: 9074.291 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #78: Protein | Mass: 15463.333 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #80: Protein | Mass: 13147.561 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Non-polymers , 3 types, 303 molecules 




| #88: Chemical | ChemComp-MG / #89: Chemical | ChemComp-ZN / #90: Chemical | ChemComp-COA / | |
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-Details
| Has ligand of interest | N |
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| Has protein modification | N |
-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
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| Buffer solution | pH: 7.7 | ||||||||||||||||||||||||||||
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||||||
| Vitrification | Cryogen name: ETHANE / Humidity: 100 % |
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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: 1800 nm / Nominal defocus min: 400 nm |
| Image recording | Electron dose: 40 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
| EM software | Name: PHENIX / Version: 1.20.1_4487: / Category: model refinement | ||||||||||||||||||||||||
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3D reconstruction | Resolution: 2.82 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 23479 / Symmetry type: POINT | ||||||||||||||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT | ||||||||||||||||||||||||
| Refine LS restraints |
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