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Open data
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Basic information
Entry | Database: PDB / ID: 7cec | |||||||||
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Title | Structure of alpha6beta1 integrin in complex with laminin-511 | |||||||||
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![]() | CELL ADHESION/IMMUNE SYSTEM / Integrin / Laminin / Fv-clasp / CELL ADHESION / CELL ADHESION-IMMUNE SYSTEM complex | |||||||||
Function / homology | ![]() integrin alpha6-beta4 complex / laminin-5 complex / neuronal-glial interaction involved in cerebral cortex radial glia guided migration / laminin-11 complex / laminin-2 complex / laminin-8 complex / laminin-1 complex / laminin-10 complex / integrin alpha8-beta1 complex / regulation of basement membrane organization ...integrin alpha6-beta4 complex / laminin-5 complex / neuronal-glial interaction involved in cerebral cortex radial glia guided migration / laminin-11 complex / laminin-2 complex / laminin-8 complex / laminin-1 complex / laminin-10 complex / integrin alpha8-beta1 complex / regulation of basement membrane organization / : / ectodermal cell differentiation / integrin alpha3-beta1 complex / integrin alpha5-beta1 complex / integrin alpha6-beta1 complex / integrin alpha7-beta1 complex / integrin alpha10-beta1 complex / integrin alpha11-beta1 complex / neuregulin binding / positive regulation of glutamate uptake involved in transmission of nerve impulse / myoblast fate specification / extracellular matrix of synaptic cleft / integrin alpha9-beta1 complex / L1CAM interactions / Type I hemidesmosome assembly / 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 / trunk neural crest cell migration / hemidesmosome assembly / nail development / cell adhesion mediator activity / collagen binding involved in cell-matrix adhesion / Localization of the PINCH-ILK-PARVIN complex to focal adhesions / integrin alpha2-beta1 complex / postsynapse organization / reactive gliosis / formation of radial glial scaffolds / Other semaphorin interactions / cerebellar climbing fiber to Purkinje cell synapse / positive regulation of integrin-mediated signaling pathway / Formation of the ureteric bud / morphogenesis of embryonic epithelium / positive regulation of vascular endothelial growth factor signaling pathway / calcium-independent cell-matrix adhesion / positive regulation of fibroblast growth factor receptor signaling pathway / CD40 signaling pathway / Fibronectin matrix formation / basement membrane organization / regulation of synapse pruning / integrin alphav-beta1 complex / myelin sheath abaxonal region / CHL1 interactions / skin morphogenesis / cardiac muscle cell myoblast differentiation / morphogenesis of a polarized epithelium / MET interacts with TNS proteins / Laminin interactions / leukocyte tethering or rolling / EGR2 and SOX10-mediated initiation of Schwann cell myelination / cardiac muscle cell differentiation / germ cell migration / cell projection organization / protein complex involved in cell-matrix adhesion / Platelet Adhesion to exposed collagen / branching involved in salivary gland morphogenesis / endoderm development / insulin-like growth factor I binding / myoblast fusion / regulation of epithelial cell proliferation / Elastic fibre formation / mesodermal cell differentiation / cell-substrate junction assembly / axon extension / cell migration involved in sprouting angiogenesis / myoblast differentiation / Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian Skin / positive regulation of fibroblast migration / positive regulation of cell-substrate adhesion / regulation of spontaneous synaptic transmission / wound healing, spreading of epidermal cells / integrin complex / heterotypic cell-cell adhesion / skeletal system morphogenesis / odontogenesis / lamellipodium assembly / extracellular matrix structural constituent / Assembly of collagen fibrils and other multimeric structures / dendrite morphogenesis / Molecules associated with elastic fibres / MET activates PTK2 signaling / Basigin interactions / negative regulation of vasoconstriction / cell adhesion mediated by integrin / leukocyte migration / leukocyte cell-cell adhesion / branching involved in ureteric bud morphogenesis Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
![]() | Arimori, T. / Miyazaki, N. / Takagi, J. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural mechanism of laminin recognition by integrin. Authors: Takao Arimori / Naoyuki Miyazaki / Emiko Mihara / Mamoru Takizawa / Yukimasa Taniguchi / Carlos Cabañas / Kiyotoshi Sekiguchi / Junichi Takagi / ![]() ![]() Abstract: Recognition of laminin by integrin receptors is central to the epithelial cell adhesion to basement membrane, but the structural background of this molecular interaction remained elusive. Here, we ...Recognition of laminin by integrin receptors is central to the epithelial cell adhesion to basement membrane, but the structural background of this molecular interaction remained elusive. Here, we report the structures of the prototypic laminin receptor α6β1 integrin alone and in complex with three-chain laminin-511 fragment determined via crystallography and cryo-electron microscopy, respectively. The laminin-integrin interface is made up of several binding sites located on all five subunits, with the laminin γ1 chain C-terminal portion providing focal interaction using two carboxylate anchor points to bridge metal-ion dependent adhesion site of integrin β1 subunit and Asn189 of integrin α6 subunit. Laminin α5 chain also contributes to the affinity and specificity by making electrostatic interactions with large surface on the β-propeller domain of α6, part of which comprises an alternatively spliced X1 region. The propeller sheet corresponding to this region shows unusually high mobility, suggesting its unique role in ligand capture. | |||||||||
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 | ![]() | 426.3 KB | Display | ![]() |
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PDB format | ![]() | 325.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 881.3 KB | Display | ![]() |
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Full document | ![]() | 924.3 KB | Display | |
Data in XML | ![]() | 67.5 KB | Display | |
Data in CIF | ![]() | 101.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 30342MC ![]() 7ceaC ![]() 7cebC 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
-Protein , 2 types, 2 molecules AB
#1: Protein | Mass: 69776.023 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 50510.930 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Laminin subunit ... , 3 types, 3 molecules CDE
#3: Protein | Mass: 73414.203 Da / Num. of mol.: 1 / Fragment: E8 fragment / Mutation: I2723C Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#4: Protein | Mass: 8552.753 Da / Num. of mol.: 1 / Fragment: E8 fragment Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#5: Protein | Mass: 9483.724 Da / Num. of mol.: 1 / Fragment: E8 fragment / Mutation: D1585C Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Antibody , 4 types, 4 molecules FGHI
#6: Antibody | Mass: 19463.992 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: chimera of TS2/16 VH(S112C)-SARAH Source: (gene. exp.) ![]() ![]() ![]() Production host: ![]() ![]() |
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#7: Antibody | Mass: 18270.742 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: chimera of TS2/16 VL-SARAH(S37C) Source: (gene. exp.) ![]() ![]() ![]() Production host: ![]() ![]() |
#8: Antibody | Mass: 19760.207 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: chimera of HUTS-4 VH(S112C)-SARAH Source: (gene. exp.) ![]() ![]() ![]() Production host: ![]() ![]() |
#9: Antibody | Mass: 17701.023 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Details: chimera of HUTS-4 VL(C87Y)-SARAH(S37C) Source: (gene. exp.) ![]() ![]() ![]() Production host: ![]() ![]() |
-Sugars , 2 types, 7 molecules 
#10: Polysaccharide | 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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#12: Sugar | ChemComp-NAG / |
-Non-polymers , 2 types, 7 molecules 


#11: Chemical | ChemComp-CA / |
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#13: Chemical |
-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: Quaternary complex of alpha6beta1 integrin, laminin-511, TS2/16 Fv-clasp, and HUTS-4 Fv-clasp Type: COMPLEX / Entity ID: #1-#9 / Source: RECOMBINANT | |||||||||||||||||||||||||
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Molecular weight | Value: 0.286 MDa / Experimental value: NO | |||||||||||||||||||||||||
Source (natural) | Organism: ![]() | |||||||||||||||||||||||||
Source (recombinant) | Organism: ![]() ![]() | |||||||||||||||||||||||||
Buffer solution | pH: 7.5 | |||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.07 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||
Specimen support | Grid material: MOLYBDENUM / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/1 | |||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / 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: 59000 X / Nominal defocus max: 800 nm / Nominal defocus min: 600 nm / Alignment procedure: ZEMLIN TABLEAU |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 40 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON III (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7768 |
EM imaging optics | Phase plate: VOLTA PHASE PLATE |
Image scans | Width: 4096 / Height: 4096 |
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Processing
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 2660283 | ||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 429521 / Symmetry type: POINT | ||||||||||||||||||||||||||||
Refinement | Stereochemistry target values: CDL v1.2 | ||||||||||||||||||||||||||||
Refine LS restraints |
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