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- EMDB-45170: Structure of the CNOT3-bound human 80S ribosome with tRNA-ARG in ... -
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Basic information
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Title | Structure of the CNOT3-bound human 80S ribosome with tRNA-ARG in the P-site. | ||||||||||||||||||||||||
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![]() | mRNA degradation / CCR4-NOT complex / tRNA / RIBOSOME | ||||||||||||||||||||||||
Function / homology | ![]() CCR4-NOT core complex / CCR4-NOT complex / regulation of stem cell population maintenance / nuclear-transcribed mRNA poly(A) tail shortening / trophectodermal cell differentiation / Deadenylation of mRNA / embryonic brain development / M-decay: degradation of maternal mRNAs by maternally stored factors / eukaryotic 80S initiation complex / negative regulation of protein neddylation ...CCR4-NOT core complex / CCR4-NOT complex / regulation of stem cell population maintenance / nuclear-transcribed mRNA poly(A) tail shortening / trophectodermal cell differentiation / Deadenylation of mRNA / embryonic brain development / M-decay: degradation of maternal mRNAs by maternally stored factors / eukaryotic 80S initiation complex / negative regulation of protein neddylation / negative regulation of endoplasmic reticulum unfolded protein response / oxidized pyrimidine DNA binding / response to TNF agonist / positive regulation of base-excision repair / negative regulation of formation of translation preinitiation complex / regulation of G1 to G0 transition / axial mesoderm development / negative regulation of peptidyl-serine phosphorylation / positive regulation of respiratory burst involved in inflammatory response / ribosomal protein import into nucleus / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage / 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 gastrulation / nucleolus organization / regulation of adenylate cyclase-activating G protein-coupled receptor signaling pathway / protein tyrosine kinase inhibitor activity / protein-DNA complex disassembly / regulatory ncRNA-mediated gene silencing / 90S preribosome assembly / IRE1-RACK1-PP2A complex / positive regulation of endodeoxyribonuclease activity / positive regulation of Golgi to plasma membrane protein transport / translation at postsynapse / TNFR1-mediated ceramide production / negative regulation of DNA repair / negative regulation of RNA splicing / mammalian oogenesis stage / positive regulation of DNA damage response, signal transduction by p53 class mediator / GAIT complex / A band / supercoiled DNA binding / activation-induced cell death of T cells / TORC2 complex binding / TP53 regulates transcription of additional cell cycle genes whose exact role in the p53 pathway remain uncertain / neural crest cell differentiation / alpha-beta T cell differentiation / G1 to G0 transition / NF-kappaB complex / oxidized purine DNA binding / cysteine-type endopeptidase activator activity involved in apoptotic process / middle ear morphogenesis / negative regulation of intrinsic apoptotic signaling pathway in response to hydrogen peroxide / exit from mitosis / ubiquitin-like protein conjugating enzyme binding / regulation of establishment of cell polarity / translation at presynapse / positive regulation of ubiquitin-protein transferase activity / rRNA modification in the nucleus and cytosol / Formation of the ternary complex, and subsequently, the 43S complex / negative regulation of phagocytosis / erythrocyte homeostasis / optic nerve development / cytoplasmic side of rough endoplasmic reticulum membrane / laminin receptor activity / protein kinase A binding / retinal ganglion cell axon guidance / negative regulation of ubiquitin protein ligase activity / pigmentation / Ribosomal scanning and start codon recognition / ion channel inhibitor activity / homeostatic process / Translation initiation complex formation / response to aldosterone / positive regulation of mitochondrial depolarization / positive regulation of T cell receptor signaling pathway / macrophage chemotaxis / positive regulation of activated T cell proliferation / fibroblast growth factor binding / negative regulation of Wnt signaling pathway / lung morphogenesis / monocyte chemotaxis / negative regulation of translational frameshifting / Protein hydroxylation / BH3 domain binding / TOR signaling / SARS-CoV-1 modulates host translation machinery / regulation of cell division / mTORC1-mediated signalling / T cell proliferation involved in immune response / Peptide chain elongation / iron-sulfur cluster binding / positive regulation of intrinsic apoptotic signaling pathway by p53 class mediator / Selenocysteine synthesis / positive regulation of signal transduction by p53 class mediator / Formation of a pool of free 40S subunits / endonucleolytic cleavage to generate mature 3'-end of SSU-rRNA from (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / Eukaryotic Translation Termination / ubiquitin ligase inhibitor activity / Response of EIF2AK4 (GCN2) to amino acid deficiency Similarity search - Function | ||||||||||||||||||||||||
Biological species | ![]() | ||||||||||||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.0 Å | ||||||||||||||||||||||||
![]() | Erzberger JP / Cruz VE | ||||||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Specific tRNAs promote mRNA decay by recruiting the CCR4-NOT complex to translating ribosomes. Authors: Xiaoqiang Zhu / Victor Emmanuel Cruz / He Zhang / Jan P Erzberger / Joshua T Mendell / ![]() Abstract: The CCR4-NOT complex is a major regulator of eukaryotic messenger RNA (mRNA) stability. Slow decoding during translation promotes association of CCR4-NOT with ribosomes, accelerating mRNA degradation. ...The CCR4-NOT complex is a major regulator of eukaryotic messenger RNA (mRNA) stability. Slow decoding during translation promotes association of CCR4-NOT with ribosomes, accelerating mRNA degradation. We applied selective ribosome profiling to further investigate the determinants of CCR4-NOT recruitment to ribosomes in mammalian cells. This revealed that specific arginine codons in the P-site are strong signals for ribosomal recruitment of human CNOT3, a CCR4-NOT subunit. Cryo-electron microscopy and transfer RNA (tRNA) mutagenesis demonstrated that the D-arms of select arginine tRNAs interact with CNOT3 and promote its recruitment whereas other tRNA D-arms sterically clash with CNOT3. These effects link codon content to mRNA stability. Thus, in addition to their canonical decoding function, tRNAs directly engage regulatory complexes during translation, a mechanism we term P-site tRNA-mediated mRNA decay. | ||||||||||||||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 322 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 105.9 KB 105.9 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 15.7 KB | Display | ![]() |
Images | ![]() | 152.6 KB | ||
Filedesc metadata | ![]() | 21.5 KB | ||
Others | ![]() ![]() | 274.1 MB 274.7 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 23.4 KB | Display | |
Data in CIF | ![]() | 31.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9c3hMC ![]() 9c3iC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.936 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #1
File | emd_45170_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_45170_half_map_2.map | ||||||||||||
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Density Histograms |
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Sample components
+Entire : 80S ribosome in complex with CNOT3 and P-site tRNA ARG CCG-1
+Supramolecule #1: 80S ribosome in complex with CNOT3 and P-site tRNA ARG CCG-1
+Macromolecule #1: 5.8S rRNA
+Macromolecule #2: 28S rRNA
+Macromolecule #4: 5S rRNA
+Macromolecule #6: tRNA-ARG,CCG-1
+Macromolecule #48: 18S rRNA
+Macromolecule #49: mRNA
+Macromolecule #3: Large ribosomal subunit protein uL18
+Macromolecule #5: Large ribosomal subunit protein uL3
+Macromolecule #7: Large ribosomal subunit protein uL4
+Macromolecule #8: Large ribosomal subunit protein uL2
+Macromolecule #9: Large ribosomal subunit protein uL24
+Macromolecule #10: Large ribosomal subunit protein uL30
+Macromolecule #11: Large ribosomal subunit protein eL8
+Macromolecule #12: Large ribosomal subunit protein uL6
+Macromolecule #13: Large ribosomal subunit protein eL32
+Macromolecule #14: Large ribosomal subunit protein uL5
+Macromolecule #15: Large ribosomal subunit protein eL6
+Macromolecule #16: Large ribosomal subunit protein eL14
+Macromolecule #17: Large ribosomal subunit protein eL15
+Macromolecule #18: Large ribosomal subunit protein uL29
+Macromolecule #19: Large ribosomal subunit protein eL37
+Macromolecule #20: Large ribosomal subunit protein eL13
+Macromolecule #21: Large ribosomal subunit protein eL19
+Macromolecule #22: Large ribosomal subunit protein eL20
+Macromolecule #23: Large ribosomal subunit protein eL21
+Macromolecule #24: Large ribosomal subunit protein eL39
+Macromolecule #25: Large ribosomal subunit protein uL14
+Macromolecule #26: Large ribosomal subunit protein eL24
+Macromolecule #27: Large ribosomal subunit protein uL13
+Macromolecule #28: Large ribosomal subunit protein eL27
+Macromolecule #29: Large ribosomal subunit protein uL15
+Macromolecule #30: Large ribosomal subunit protein eL29
+Macromolecule #31: Large ribosomal subunit protein eL30
+Macromolecule #32: Large ribosomal subunit protein eL31
+Macromolecule #33: Large ribosomal subunit protein eL42
+Macromolecule #34: Large ribosomal subunit protein eL33
+Macromolecule #35: Large ribosomal subunit protein eL34
+Macromolecule #36: Large ribosomal subunit protein uL22
+Macromolecule #37: Large ribosomal subunit protein eL36
+Macromolecule #38: Large ribosomal subunit protein eL18
+Macromolecule #39: Large ribosomal subunit protein eL38
+Macromolecule #40: Large ribosomal subunit protein eL28
+Macromolecule #41: Large ribosomal subunit protein eL22
+Macromolecule #42: Large ribosomal subunit protein uL23
+Macromolecule #43: Large ribosomal subunit protein eL40
+Macromolecule #44: Large ribosomal subunit protein eL43
+Macromolecule #45: Large ribosomal subunit protein uL16
+Macromolecule #46: Nascent chain
+Macromolecule #47: Small ribosomal subunit protein eS1
+Macromolecule #50: Small ribosomal subunit protein uS2
+Macromolecule #51: CCR4-NOT transcription complex subunit 3
+Macromolecule #52: Small ribosomal subunit protein uS5
+Macromolecule #53: Small ribosomal subunit protein uS7
+Macromolecule #54: Small ribosomal subunit protein eS4, X isoform
+Macromolecule #55: Small ribosomal subunit protein eS6
+Macromolecule #56: Small ribosomal subunit protein eS7
+Macromolecule #57: Small ribosomal subunit protein eS8
+Macromolecule #58: Small ribosomal subunit protein uS4
+Macromolecule #59: Small ribosomal subunit protein uS3
+Macromolecule #60: Small ribosomal subunit protein uS17
+Macromolecule #61: Small ribosomal subunit protein eS10
+Macromolecule #62: Small ribosomal subunit protein uS15
+Macromolecule #63: Small ribosomal subunit protein uS11
+Macromolecule #64: Small ribosomal subunit protein uS19
+Macromolecule #65: Small ribosomal subunit protein uS9
+Macromolecule #66: Small ribosomal subunit protein eS17
+Macromolecule #67: Small ribosomal subunit protein uS13
+Macromolecule #68: Small ribosomal subunit protein eS19
+Macromolecule #69: Small ribosomal subunit protein eS21
+Macromolecule #70: Small ribosomal subunit protein uS8
+Macromolecule #71: Small ribosomal subunit protein uS12
+Macromolecule #72: Isoform 3 of Small ribosomal subunit protein eS24
+Macromolecule #73: Small ribosomal subunit protein uS10
+Macromolecule #74: Small ribosomal subunit protein eS26
+Macromolecule #75: Small ribosomal subunit protein eS27
+Macromolecule #76: Small ribosomal subunit protein eS25
+Macromolecule #77: Small ribosomal subunit protein eS28
+Macromolecule #78: FAU ubiquitin-like and ribosomal protein S30
+Macromolecule #79: Small ribosomal subunit protein uS14
+Macromolecule #80: Receptor of activated protein C kinase 1
+Macromolecule #81: Small ribosomal subunit protein eS32
+Macromolecule #82: Small ribosomal subunit protein eS12
+Macromolecule #83: Ubiquitin-40S ribosomal protein S27a
+Macromolecule #84: MAGNESIUM ION
+Macromolecule #85: POTASSIUM ION
+Macromolecule #86: 2-[3-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-PROPYLAMINO]-2-HY...
+Macromolecule #87: ZINC ION
+Macromolecule #88: water
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 17.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.9000000000000001 µm / Nominal defocus min: 0.6 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |