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- PDB-7nwl: Cryo-EM structure of human integrin alpha5beta1 (open form) in co... -
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Basic information
Entry | Database: PDB / ID: 7nwl | |||||||||||||||||||||
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Title | Cryo-EM structure of human integrin alpha5beta1 (open form) in complex with fibronectin and TS2/16 Fv-clasp | |||||||||||||||||||||
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![]() | CELL ADHESION / integrin / fibronectin / TS2/16 / plasma membrane protein / a5b1 / alpha5beta1 / focal adhesion / open conformation | |||||||||||||||||||||
Function / homology | ![]() integrin alpha8-beta1 complex / : / integrin alpha3-beta1 complex / integrin alpha5-beta1 complex / integrin alpha6-beta1 complex / integrin alpha7-beta1 complex / integrin alpha10-beta1 complex / integrin alpha11-beta1 complex / positive regulation of glutamate uptake involved in transmission of nerve impulse / myoblast fate specification ...integrin alpha8-beta1 complex / : / integrin alpha3-beta1 complex / integrin alpha5-beta1 complex / integrin alpha6-beta1 complex / integrin alpha7-beta1 complex / integrin alpha10-beta1 complex / integrin alpha11-beta1 complex / positive regulation of glutamate uptake involved in transmission of nerve impulse / myoblast fate specification / integrin alpha9-beta1 complex / regulation of collagen catabolic process / cardiac cell fate specification / integrin binding involved in cell-matrix adhesion / integrin alpha4-beta1 complex / cell-cell adhesion mediated by integrin / integrin alpha1-beta1 complex / Localization of the PINCH-ILK-PARVIN complex to focal adhesions / collagen binding involved in cell-matrix adhesion / integrin alpha2-beta1 complex / reactive gliosis / formation of radial glial scaffolds / Other semaphorin interactions / cerebellar climbing fiber to Purkinje cell synapse / negative regulation of monocyte activation / Formation of the ureteric bud / negative regulation of transforming growth factor beta production / calcium-independent cell-matrix adhesion / positive regulation of vascular endothelial growth factor signaling pathway / positive regulation of fibroblast growth factor receptor signaling pathway / CD40 signaling pathway / Extracellular matrix organization / Fibronectin matrix formation / positive regulation of substrate-dependent cell migration, cell attachment to substrate / basement membrane organization / regulation of synapse pruning / neural crest cell migration involved in autonomic nervous system development / integrin alphav-beta1 complex / myelin sheath abaxonal region / peptidase activator activity / CHL1 interactions / fibrinogen complex / RUNX2 regulates genes involved in cell migration / cardiac muscle cell myoblast differentiation / alphav-beta3 integrin-vitronectin complex / MET interacts with TNS proteins / Laminin interactions / peptide cross-linking / leukocyte tethering or rolling / cardiac muscle cell differentiation / germ cell migration / cell projection organization / Platelet Adhesion to exposed collagen / integrin activation / vascular endothelial growth factor receptor 2 binding / ALK mutants bind TKIs / myoblast fusion / Elastic fibre formation / mesodermal cell differentiation / cell-substrate junction assembly / platelet-derived growth factor receptor binding / axon extension / cell migration involved in sprouting angiogenesis / myoblast differentiation / Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian Skin / positive regulation of vascular endothelial growth factor receptor signaling pathway / positive regulation of fibroblast migration / positive regulation of cell-substrate adhesion / proteoglycan binding / heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules / regulation of spontaneous synaptic transmission / wound healing, spreading of epidermal cells / integrin complex / heterotypic cell-cell adhesion / epidermal growth factor receptor binding / lamellipodium assembly / biological process involved in interaction with symbiont / extracellular matrix structural constituent / dendrite morphogenesis / Molecules associated with elastic fibres / MET activates PTK2 signaling / Basigin interactions / negative regulation of vasoconstriction / cell adhesion mediated by integrin / sarcomere organization / leukocyte cell-cell adhesion / positive regulation of wound healing / Syndecan interactions / muscle organ development / response to muscle activity / p130Cas linkage to MAPK signaling for integrins / positive regulation of neuroblast proliferation / maintenance of blood-brain barrier / positive regulation of sprouting angiogenesis / negative regulation of Rho protein signal transduction / cell-substrate adhesion / homophilic cell adhesion via plasma membrane adhesion molecules / endodermal cell differentiation / establishment of mitotic spindle orientation / endoplasmic reticulum-Golgi intermediate compartment Similarity search - Function | |||||||||||||||||||||
Biological species | ![]() ![]() ![]() | |||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||||||||||||||
![]() | Schumacher, S. / Dedden, D. / Vazquez Nunez, R. / Matoba, K. / Takagi, J. / Biertumpfel, C. / Mizuno, N. | |||||||||||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Structural insights into integrin αβ opening by fibronectin ligand. Authors: Stephanie Schumacher / Dirk Dedden / Roberto Vazquez Nunez / Kyoko Matoba / Junichi Takagi / Christian Biertümpfel / Naoko Mizuno / ![]() ![]() ![]() Abstract: Integrin αβ is a major fibronectin receptor critical for cell migration. Upon complex formation, fibronectin and αβ undergo conformational changes. While this is key for cell-tissue connections, ...Integrin αβ is a major fibronectin receptor critical for cell migration. Upon complex formation, fibronectin and αβ undergo conformational changes. While this is key for cell-tissue connections, its mechanism is unknown. Here, we report cryo-electron microscopy structures of native human αβ with fibronectin to 3.1-angstrom resolution, and in its resting state to 4.6-angstrom resolution. The αβ-fibronectin complex revealed simultaneous interactions at the arginine-glycine-aspartate loop, the synergy site, and a newly identified binding site proximal to adjacent to metal ion-dependent adhesion site, inducing the translocation of helix α1 to secure integrin opening. Resting αβ adopts an incompletely bent conformation, challenging the model of integrin sharp bending inhibiting ligand binding. Our biochemical and structural analyses showed that affinity of αβ for fibronectin is increased with manganese ions (Mn) while adopting the half-bent conformation, indicating that ligand-binding affinity does not depend on conformation, and αβ opening is induced by ligand-binding. | |||||||||||||||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 343.3 KB | Display | ![]() |
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PDB format | ![]() | 262.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 1.6 MB | Display | ![]() |
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Full document | ![]() | 1.7 MB | Display | |
Data in XML | ![]() | 77.7 KB | Display | |
Data in CIF | ![]() | 111.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 12634MC ![]() 7nxdC C: citing same article ( M: map data used to model this data |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 3 types, 3 molecules ABC
#1: Protein | Mass: 110111.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() |
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#2: Protein | Mass: 86338.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Details: Sequenced used from GenBank entry CAA30790 / Source: (natural) ![]() |
#3: Protein | Mass: 39981.160 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-Antibody , 2 types, 2 molecules DE
#4: Antibody | Mass: 19463.992 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: Chimera: Homo sapiens, 9606 / Source: (gene. exp.) ![]() ![]() ![]() ![]() |
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#5: Antibody | Mass: 18270.742 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: Chimera: Homo sapiens, 9660 / Source: (gene. exp.) ![]() ![]() ![]() ![]() |
-Sugars , 5 types, 10 molecules
#6: Polysaccharide | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #7: Polysaccharide | Source method: isolated from a genetically manipulated source #8: Polysaccharide | alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #9: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #10: Polysaccharide | alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source |
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-Non-polymers , 1 types, 7 molecules 
#11: Chemical | ChemComp-MN / |
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-Details
Has ligand of interest | N |
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Has protein modification | Y |
-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: Ternary complex of integrin a5b1, fibronectin and TS2/16 Fv-clasp Type: COMPLEX / Entity ID: #1-#5 / Source: MULTIPLE SOURCES | ||||||||||||||||||||
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Molecular weight | Value: .21 MDa / Experimental value: NO | ||||||||||||||||||||
Source (natural) | Organism: ![]() | ||||||||||||||||||||
Buffer solution | pH: 7.5 | ||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.15 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Integrin a5b1 was assembled into MSPE3D1 nanodiscs containing lipids Folch fraction I lipids from bovine brain at a ratio of 1:29:3460, respectively. The assembly mix was incubated with SM-2 ...Details: Integrin a5b1 was assembled into MSPE3D1 nanodiscs containing lipids Folch fraction I lipids from bovine brain at a ratio of 1:29:3460, respectively. The assembly mix was incubated with SM-2 BioBeads to remove DDM detergent from solubilized lipids and then purified by size-exclusion chromatography using a Superose 6 3.2/300 column and mixed with FN7-10 and TS/2/16 at stoichiometric ratios. | ||||||||||||||||||||
Specimen support | Details: GloQube at 20 mA / Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3 | ||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE-PROPANE / Humidity: 100 % / Chamber temperature: 277 K |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 64000 X / Nominal defocus max: 3200 nm / Nominal defocus min: -500 nm / Cs: 2.62 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 7.39 sec. / Electron dose: 59.7 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 9431 |
EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV |
Image scans | Sampling size: 5 µm / Width: 6144 / Height: 4096 |
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Processing
Software | Name: PHENIX / Version: 1.17.1_3660: / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||
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EM software |
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Image processing | Details: initial image processing automatically by FOCUS pipeline: gain normalization, motion correction and dose-weighting in MotionCor2 CTF estimation by GCTF | ||||||||||||||||||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 4218951 | ||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 680610 / Algorithm: FOURIER SPACE / Num. of class averages: 2 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | 3D fitting-ID: 1 / Source name: PDB / Type: experimental model
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Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 113.02 Å2 | ||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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