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Yorodumi- EMDB-0322: TnaC-stalled ribosome complex with the titin I27 domain folding c... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-0322 | |||||||||
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Title | TnaC-stalled ribosome complex with the titin I27 domain folding close to the ribosomal exit tunnel | |||||||||
Map data | Titin I27 domain folded at the exit of ribosomal tunnel | |||||||||
Sample |
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Function / homology | Function and homology information positive regulation of tryptophan metabolic process / transcriptional attenuation by ribosome / sarcomerogenesis / structural molecule activity conferring elasticity / telethonin binding / skeletal muscle myosin thick filament assembly / cardiac myofibril assembly / detection of muscle stretch / muscle alpha-actinin binding / tryptophan catabolic process ...positive regulation of tryptophan metabolic process / transcriptional attenuation by ribosome / sarcomerogenesis / structural molecule activity conferring elasticity / telethonin binding / skeletal muscle myosin thick filament assembly / cardiac myofibril assembly / detection of muscle stretch / muscle alpha-actinin binding / tryptophan catabolic process / cardiac muscle tissue morphogenesis / regulation of catalytic activity / Striated Muscle Contraction / mitotic chromosome condensation / cardiac muscle hypertrophy / M band / actinin binding / I band / cardiac muscle cell development / regulation of protein kinase activity / structural constituent of muscle / sarcomere organization / stringent response / skeletal muscle thin filament assembly / striated muscle thin filament / striated muscle contraction / transcriptional attenuation / endoribonuclease inhibitor activity / RNA-binding transcription regulator activity / positive regulation of ribosome biogenesis / negative regulation of cytoplasmic translation / translational termination / DnaA-L2 complex / protein kinase A signaling / translation repressor activity / cardiac muscle contraction / negative regulation of DNA-templated DNA replication initiation / ribosome assembly / mRNA regulatory element binding translation repressor activity / response to reactive oxygen species / assembly of large subunit precursor of preribosome / cytosolic ribosome assembly / muscle contraction / condensed nuclear chromosome / regulation of cell growth / positive regulation of protein secretion / DNA-templated transcription termination / response to radiation / mRNA 5'-UTR binding / ribosomal large subunit assembly / Z disc / response to calcium ion / : / actin filament binding / large ribosomal subunit rRNA binding / ribosome binding / large ribosomal subunit / Platelet degranulation / cytoplasmic translation / 5S rRNA binding / cytosolic large ribosomal subunit / transferase activity / protein tyrosine kinase activity / protease binding / tRNA binding / negative regulation of translation / rRNA binding / calmodulin binding / non-specific serine/threonine protein kinase / ribosome / structural constituent of ribosome / translation / phosphorylation / response to antibiotic / protein serine kinase activity / mRNA binding / protein serine/threonine kinase activity / negative regulation of DNA-templated transcription / calcium ion binding / positive regulation of gene expression / protein kinase binding / enzyme binding / protein homodimerization activity / DNA binding / RNA binding / extracellular exosome / zinc ion binding / extracellular region / ATP binding / identical protein binding / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Escherichia coli (E. coli) / Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | |||||||||
Authors | Su T / Kudva R / von Heijne G / Beckmann R | |||||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2018 Title: Folding pathway of an Ig domain is conserved on and off the ribosome. Authors: Pengfei Tian / Annette Steward / Renuka Kudva / Ting Su / Patrick J Shilling / Adrian A Nickson / Jeffrey J Hollins / Roland Beckmann / Gunnar von Heijne / Jane Clarke / Robert B Best / Abstract: Proteins that fold cotranslationally may do so in a restricted configurational space, due to the volume occupied by the ribosome. How does this environment, coupled with the close proximity of the ...Proteins that fold cotranslationally may do so in a restricted configurational space, due to the volume occupied by the ribosome. How does this environment, coupled with the close proximity of the ribosome, affect the folding pathway of a protein? Previous studies have shown that the cotranslational folding process for many proteins, including small, single domains, is directly affected by the ribosome. Here, we investigate the cotranslational folding of an all-β Ig domain, titin I27. Using an arrest peptide-based assay and structural studies by cryo-EM, we show that I27 folds in the mouth of the ribosome exit tunnel. Simulations that use a kinetic model for the force dependence of escape from arrest accurately predict the fraction of folded protein as a function of length. We used these simulations to probe the folding pathway on and off the ribosome. Our simulations-which also reproduce experiments on mutant forms of I27-show that I27 folds, while still sequestered in the mouth of the ribosome exit tunnel, by essentially the same pathway as free I27, with only subtle shifts of critical contacts from the C to the N terminus. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_0322.map.gz | 182.6 MB | EMDB map data format | |
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Header (meta data) | emd-0322-v30.xml emd-0322.xml | 53.3 KB 53.3 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_0322_fsc.xml | 13.2 KB | Display | FSC data file |
Images | emd_0322.png | 181.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-0322 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-0322 | HTTPS FTP |
-Related structure data
Related structure data | 6i0yMC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_0322.map.gz / Format: CCP4 / Size: 196.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Titin I27 domain folded at the exit of ribosomal tunnel | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
+Entire : TnaC-stalled ribosome complex with the titin I27 domain folding c...
+Supramolecule #1: TnaC-stalled ribosome complex with the titin I27 domain folding c...
+Supramolecule #2: ribosome
+Supramolecule #3: Tryptophanase operon leader peptide
+Supramolecule #4: Titin nascent chain
+Macromolecule #1: 50S ribosomal protein L24
+Macromolecule #2: 50S ribosomal protein L32
+Macromolecule #3: 50S ribosomal protein L33
+Macromolecule #4: 50S ribosomal protein L34
+Macromolecule #5: 50S ribosomal protein L35
+Macromolecule #6: 50S ribosomal protein L36
+Macromolecule #7: 50S ribosomal protein L10
+Macromolecule #8: 50S ribosomal protein L7/L12
+Macromolecule #9: Tryptophanase operon leader peptide
+Macromolecule #10: 50S ribosomal protein L25
+Macromolecule #13: 50S ribosomal protein L2
+Macromolecule #14: 50S ribosomal protein L3
+Macromolecule #15: 50S ribosomal protein L4
+Macromolecule #16: 50S ribosomal protein L5
+Macromolecule #17: 50S ribosomal protein L6
+Macromolecule #18: 50S ribosomal protein L9
+Macromolecule #19: 50S ribosomal protein L11
+Macromolecule #20: 50S ribosomal protein L13
+Macromolecule #21: 50S ribosomal protein L14
+Macromolecule #22: 50S ribosomal protein L15
+Macromolecule #23: 50S ribosomal protein L16
+Macromolecule #24: 50S ribosomal protein L17
+Macromolecule #25: 50S ribosomal protein L18
+Macromolecule #26: 50S ribosomal protein L19
+Macromolecule #27: 50S ribosomal protein L20
+Macromolecule #28: 50S ribosomal protein L21
+Macromolecule #29: 50S ribosomal protein L22
+Macromolecule #30: 50S ribosomal protein L23
+Macromolecule #32: 50S ribosomal protein L27
+Macromolecule #33: 50S ribosomal protein L28
+Macromolecule #34: 50S ribosomal protein L29
+Macromolecule #35: 50S ribosomal protein L30
+Macromolecule #36: Titin
+Macromolecule #11: 23S ribosomal RNA
+Macromolecule #12: 5S ribosomal RNA
+Macromolecule #31: Proline tRNA
+Macromolecule #37: MAGNESIUM ION
+Macromolecule #38: ZINC ION
+Macromolecule #39: TRYPTOPHAN
+Macromolecule #40: water
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: Quantifoil R2/2 / Material: COPPER |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.0 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Number grids imaged: 1 / Number real images: 2613 / Average electron dose: 0.926 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |