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Yorodumi- PDB-6r7q: Structure of XBP1u-paused ribosome nascent chain complex with Sec61. -
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Open data
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Basic information
| Entry | Database: PDB / ID: 6r7q | ||||||
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| Title | Structure of XBP1u-paused ribosome nascent chain complex with Sec61. | ||||||
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Keywords | RIBOSOME / translational pausing / XBP1 / UPR | ||||||
| Function / homology | Function and homology informationpositive regulation of vascular wound healing / positive regulation of protein acetylation / ATF6-mediated unfolded protein response / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / membrane docking / IRE1alpha activates chaperones / sterol homeostasis / ATF6 (ATF6-alpha) activates chaperone genes / endoplasmic reticulum Sec complex / positive regulation of plasma cell differentiation ...positive regulation of vascular wound healing / positive regulation of protein acetylation / ATF6-mediated unfolded protein response / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / membrane docking / IRE1alpha activates chaperones / sterol homeostasis / ATF6 (ATF6-alpha) activates chaperone genes / endoplasmic reticulum Sec complex / positive regulation of plasma cell differentiation / pronephric nephron development / positive regulation of phospholipid biosynthetic process / protein-transporting ATPase activity / negative regulation of myotube differentiation / positive regulation of ERAD pathway / intracellular triglyceride homeostasis / cotranslational protein targeting to membrane / Ssh1 translocon complex / Sec61 translocon complex / protein insertion into ER membrane / positive regulation of hepatocyte proliferation / cellular response to fructose stimulus / positive regulation of lactation / cellular response to fluid shear stress / post-translational protein targeting to membrane, translocation / protein targeting to ER / cellular response to laminar fluid shear stress / endothelial cell proliferation / cellular response to interleukin-4 / SRP-dependent cotranslational protein targeting to membrane, translocation / XBP1(S) activates chaperone genes / cellular response to nutrient / positive regulation of MHC class II biosynthetic process / signal sequence receptor activity / positive regulation of vascular associated smooth muscle cell migration / negative regulation of endoplasmic reticulum unfolded protein response / positive regulation of cytokine production involved in inflammatory response / cellular response to peptide hormone stimulus / positive regulation of B cell differentiation / positive regulation of T cell differentiation / positive regulation of immunoglobulin production / neuron development / IRE1-mediated unfolded protein response / adipose tissue development / regulation of translation involved in cellular response to UV / negative regulation of SMAD protein signal transduction / positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / protein-DNA complex disassembly / cellular response to vascular endothelial growth factor stimulus / positive regulation of DNA damage response, signal transduction by p53 class mediator / ubiquitin-like protein ligase binding / positive regulation of endothelial cell apoptotic process / fatty acid homeostasis / positive regulation of fat cell differentiation / vascular endothelial growth factor receptor signaling pathway / transmembrane protein transporter activity / positive regulation of TOR signaling / response to insulin-like growth factor stimulus / negative regulation of endoplasmic reticulum stress-induced intrinsic apoptotic signaling pathway / ubiquitin ligase inhibitor activity / positive regulation of vascular associated smooth muscle cell proliferation / 90S preribosome / cellular response to glucose starvation / positive regulation of signal transduction by p53 class mediator / cis-regulatory region sequence-specific DNA binding / phagocytic cup / endoplasmic reticulum unfolded protein response / negative regulation of ubiquitin-dependent protein catabolic process / ERAD pathway / cholesterol homeostasis / translation regulator activity / ribosomal small subunit export from nucleus / rough endoplasmic reticulum / positive regulation of apoptotic signaling pathway / positive regulation of autophagy / liver development / MDM2/MDM4 family protein binding / guanyl-nucleotide exchange factor activity / response to endoplasmic reticulum stress / negative regulation of transforming growth factor beta receptor signaling pathway / nuclear estrogen receptor binding / cellular response to amino acid stimulus / DNA-(apurinic or apyrimidinic site) lyase / class I DNA-(apurinic or apyrimidinic site) endonuclease activity / phosphatidylinositol 3-kinase/protein kinase B signal transduction / ribosomal large subunit biogenesis / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / RNA polymerase II transcription regulatory region sequence-specific DNA binding / DNA damage response, signal transduction by p53 class mediator / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / cellular response to glucose stimulus / maturation of SSU-rRNA / regulation of protein stability / positive regulation of protein import into nucleus / regulation of cell growth / positive regulation of translation / small-subunit processome / negative regulation of ERK1 and ERK2 cascade / protein destabilization / chromatin DNA binding Similarity search - Function | ||||||
| Biological species | Homo sapiens (human)![]() ![]() ![]() | ||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | ||||||
Authors | Shanmuganathan, V. / Cheng, J. / Braunger, K. / Berninghausen, O. / Beatrix, B. / Beckmann, R. | ||||||
| Funding support | Germany, 1items
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Citation | Journal: Elife / Year: 2019Title: Structural and mutational analysis of the ribosome-arresting human XBP1u. Authors: Vivekanandan Shanmuganathan / Nina Schiller / Anastasia Magoulopoulou / Jingdong Cheng / Katharina Braunger / Florian Cymer / Otto Berninghausen / Birgitta Beatrix / Kenji Kohno / Gunnar von ...Authors: Vivekanandan Shanmuganathan / Nina Schiller / Anastasia Magoulopoulou / Jingdong Cheng / Katharina Braunger / Florian Cymer / Otto Berninghausen / Birgitta Beatrix / Kenji Kohno / Gunnar von Heijne / Roland Beckmann / ![]() Abstract: XBP1u, a central component of the unfolded protein response (UPR), is a mammalian protein containing a functionally critical translational arrest peptide (AP). Here, we present a 3 Å cryo-EM ...XBP1u, a central component of the unfolded protein response (UPR), is a mammalian protein containing a functionally critical translational arrest peptide (AP). Here, we present a 3 Å cryo-EM structure of the stalled human XBP1u AP. It forms a unique turn in the ribosomal exit tunnel proximal to the peptidyl transferase center where it causes a subtle distortion, thereby explaining the temporary translational arrest induced by XBP1u. During ribosomal pausing the hydrophobic region 2 (HR2) of XBP1u is recognized by SRP, but fails to efficiently gate the Sec61 translocon. An exhaustive mutagenesis scan of the XBP1u AP revealed that only 8 out of 20 mutagenized positions are optimal; in the remaining 12 positions, we identify 55 different mutations increase the level of translational arrest. Thus, the wildtype XBP1u AP induces only an intermediate level of translational arrest, allowing efficient targeting by SRP without activating the Sec61 channel. | ||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6r7q.cif.gz | 4.8 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb6r7q.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 6r7q.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/r7/6r7q ftp://data.pdbj.org/pub/pdb/validation_reports/r7/6r7q | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 4745MC ![]() 4729C ![]() 4735C ![]() 4737C ![]() 6r5qC ![]() 6r6gC ![]() 6r6pC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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Components
-40S ribosomal protein ... , 8 types, 8 molecules AABBCCJJRRuxz
| #1: Protein | Mass: 6317.539 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #2: Protein | Mass: 21629.309 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #3: Protein | Mass: 24003.012 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #10: Protein | Mass: 9348.990 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #28: Protein | Mass: 13048.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #76: Protein | Mass: 24759.145 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #79: Protein | Mass: 29523.674 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #81: Protein | Mass: 27471.535 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Ribosomal protein ... , 19 types, 19 molecules DDEEFF6OOQQIJMNWYjpwyTTUUVV
| #4: Protein | Mass: 21649.633 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #5: Protein | Mass: 17586.766 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #6: Protein | Mass: 7007.069 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #20: Protein | Mass: 34669.113 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #25: Protein | Mass: 8526.119 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #27: Protein | Mass: 17057.113 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #37: Protein | Mass: 24511.861 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #38: Protein | Mass: 19399.498 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #41: Protein | Mass: 16217.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #42: Protein | Mass: 24076.088 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #51: Protein | Mass: 14131.536 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #53: Protein | Mass: 15891.787 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #65: Protein | Mass: 10090.891 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #71: Protein | Mass: 10168.153 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #78: Protein | Mass: 25215.586 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #80: Protein | Mass: 21525.941 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #82: Protein | Mass: 14734.357 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #83: Protein | Mass: 16032.804 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #84: Protein | Mass: 15626.392 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
+Protein , 43 types, 43 molecules GGHHIIKKLLMM09NNPPABCFGHOPQRSTUVXSSabcd...
-Protein/peptide , 2 types, 2 molecules 1l
| #15: Protein/peptide | Mass: 2895.380 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: XBP1, TREB5, XBP2 / Production host: ![]() |
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| #67: Protein/peptide | Mass: 6324.579 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-RNA chain , 7 types, 7 molecules 234578K
| #16: RNA chain | Mass: 24108.330 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #17: RNA chain | Mass: 24148.355 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #18: RNA chain | Mass: 1877.157 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) |
| #19: RNA chain | Mass: 1148460.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #21: RNA chain | Mass: 38691.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #22: RNA chain | Mass: 48545.672 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #39: RNA chain | Mass: 548040.188 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-60S ribosomal protein ... , 6 types, 6 molecules DELZin
| #32: Protein | Mass: 34077.391 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #33: Protein | Mass: 28818.293 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #40: Protein | Mass: 24200.525 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #54: Protein | Mass: 15704.635 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #64: Protein | Mass: 11888.371 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #69: Protein/peptide | Mass: 3473.451 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Protein transport protein Sec61 subunit ... , 3 types, 3 molecules XXYYZZ
| #86: Protein | Mass: 50728.480 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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| #87: Protein | Mass: 7019.456 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
| #88: Protein/peptide | Mass: 3265.008 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
-Non-polymers , 2 types, 305 molecules 


| #89: Chemical | ChemComp-ZN / #90: Chemical | ChemComp-MG / |
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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
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| 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
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: SPOT SCAN |
| Electron lens | Mode: BRIGHT FIELD |
| Image recording | Electron dose: 28 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k) |
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Processing
| CTF correction | Type: NONE |
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| Symmetry | Point symmetry: C1 (asymmetric) |
| 3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 12749 / Symmetry type: POINT |
| Atomic model building | Protocol: RIGID BODY FIT |
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Homo sapiens (human)


Germany, 1items
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