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- PDB-9ef2: Cryo-EM structure of alpha5beta1 integrin in complex with NeoNect... -

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Basic information

Entry
Database: PDB / ID: 9ef2
TitleCryo-EM structure of alpha5beta1 integrin in complex with NeoNectin candidate 2, open conformation
Components
  • Integrin alpha-5
  • Integrin beta-1
  • NeoNectin candidate 2
KeywordsSIGNALING PROTEIN / a5B1 / de novo / tissue regeneration / extracellular matrix protein
Function / homology
Function and homology information


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 / collagen binding involved in cell-matrix adhesion / Localization of the PINCH-ILK-PARVIN complex to focal adhesions / integrin alpha2-beta1 complex / reactive gliosis / formation of radial glial scaffolds / Other semaphorin interactions / cerebellar climbing fiber to Purkinje cell synapse / Formation of the ureteric bud / positive regulation of fibroblast growth factor receptor signaling pathway / CD40 signaling pathway / Fibronectin matrix formation / calcium-independent cell-matrix adhesion / basement membrane organization / regulation of synapse pruning / integrin alphav-beta1 complex / myelin sheath abaxonal region / CHL1 interactions / RUNX2 regulates genes involved in cell migration / cardiac muscle cell myoblast differentiation / alphav-beta3 integrin-vitronectin complex / MET interacts with TNS proteins / Laminin interactions / leukocyte tethering or rolling / cardiac muscle cell differentiation / germ cell migration / cell projection organization / Platelet Adhesion to exposed collagen / vascular endothelial growth factor receptor 2 binding / myoblast fusion / positive regulation of vascular endothelial growth factor signaling pathway / Elastic fibre formation / mesodermal cell differentiation / cell-substrate junction assembly / platelet-derived growth factor receptor binding / axon extension / myoblast differentiation / cell migration involved in sprouting angiogenesis / Differentiation of Keratinocytes in Interfollicular Epidermis in Mammalian Skin / positive regulation of fibroblast migration / positive regulation of vascular endothelial growth factor receptor signaling pathway / positive regulation of cell-substrate adhesion / wound healing, spreading of epidermal cells / integrin complex / heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules / heterotypic cell-cell adhesion / regulation of spontaneous synaptic transmission / epidermal growth factor receptor binding / lamellipodium assembly / dendrite morphogenesis / sarcomere organization / Molecules associated with elastic fibres / MET activates PTK2 signaling / Basigin interactions / Mechanical load activates signaling by PIEZO1 and integrins in osteocytes / negative regulation of vasoconstriction / leukocyte cell-cell adhesion / cell adhesion mediated by integrin / positive regulation of wound healing / muscle organ development / Syndecan interactions / response to muscle activity / positive regulation of neuroblast proliferation / maintenance of blood-brain barrier / negative regulation of Rho protein signal transduction / positive regulation of sprouting angiogenesis / cell-substrate adhesion / endodermal cell differentiation / homophilic cell adhesion via plasma membrane adhesion molecules / TGF-beta receptor signaling activates SMADs / establishment of mitotic spindle orientation / cleavage furrow / fibronectin binding / negative regulation of anoikis / cellular response to low-density lipoprotein particle stimulus / RHOG GTPase cycle / glial cell projection / intercalated disc / neuroblast proliferation / negative regulation of neuron differentiation / RAC2 GTPase cycle / ECM proteoglycans / RAC3 GTPase cycle / Integrin cell surface interactions
Similarity search - Function
Integrin beta, epidermal growth factor-like domain 1 / Integrin beta epidermal growth factor like domain 1 / Integrin beta subunit, cytoplasmic domain / Integrin beta cytoplasmic domain / Integrin_b_cyt / Integrin beta tail domain / : / Integrin alpha Ig-like domain 3 / Integrin EGF domain / Integrin beta subunit, tail ...Integrin beta, epidermal growth factor-like domain 1 / Integrin beta epidermal growth factor like domain 1 / Integrin beta subunit, cytoplasmic domain / Integrin beta cytoplasmic domain / Integrin_b_cyt / Integrin beta tail domain / : / Integrin alpha Ig-like domain 3 / Integrin EGF domain / Integrin beta subunit, tail / Integrin beta tail domain superfamily / Integrin_B_tail / EGF-like domain, extracellular / EGF-like domain / Integrins beta chain EGF (I-EGF) domain profile. / Integrin beta subunit, VWA domain / Integrin beta subunit / Integrin beta N-terminal / Integrin beta chain VWA domain / Integrin plexin domain / Integrins beta chain EGF (I-EGF) domain signature. / Integrin beta subunits (N-terminal portion of extracellular region) / Integrin alpha-2 / Integrin alpha Ig-like domain 1 / Integrin alpha chain / Integrin alpha beta-propellor / Integrin alpha chain, C-terminal cytoplasmic region, conserved site / : / Integrin alpha Ig-like domain 2 / Integrins alpha chain signature. / FG-GAP repeat profile. / Integrin alpha (beta-propellor repeats). / FG-GAP repeat / FG-GAP repeat / Integrin domain superfamily / Integrin alpha, N-terminal / PSI domain / domain found in Plexins, Semaphorins and Integrins / von Willebrand factor A-like domain superfamily / EGF-like domain signature 1.
Similarity search - Domain/homology
: / Integrin beta-1 / Integrin alpha-5
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.36 Å
AuthorsWerther, R. / Nguyen, A. / Estrada Alamo, K.A. / Wang, X. / Campbell, M.G.
Funding support United States, 4items
OrganizationGrant numberCountry
The Pew Charitable TrustsNA United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35 GM147414-01 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)P30 CA015704-40; RRID:SCR_022611 United States
Other privateSeattle Cancer Consortium Safeway Inc Pilot Grant
CitationJournal: Adv Mater / Year: 2025
Title: De Novo Design of Integrin α5β1 Modulating Proteins to Enhance Biomaterial Properties.
Authors: Xinru Wang / Jordi Guillem-Marti / Saurav Kumar / David S Lee / Daniel Cabrerizo-Aguado / Rachel Werther / Kevin Alexander Estrada Alamo / Yan Ting Zhao / Adam Nguyen / Irina Kopyeva / Buwei ...Authors: Xinru Wang / Jordi Guillem-Marti / Saurav Kumar / David S Lee / Daniel Cabrerizo-Aguado / Rachel Werther / Kevin Alexander Estrada Alamo / Yan Ting Zhao / Adam Nguyen / Irina Kopyeva / Buwei Huang / Jing Li / Yuxin Hao / Xinting Li / Aritza Brizuela-Velasco / Analisa Murray / Stacey Gerben / Anindya Roy / Cole A DeForest / Timothy Springer / Hannele Ruohola-Baker / Jonathan A Cooper / Melody G Campbell / Jose Maria Manero / Maria-Pau Ginebra / David Baker /
Abstract: Integrin α5β1 is crucial for cell attachment and migration in development and tissue regeneration, and α5β1 binding proteins can have considerable utility in regenerative medicine and next- ...Integrin α5β1 is crucial for cell attachment and migration in development and tissue regeneration, and α5β1 binding proteins can have considerable utility in regenerative medicine and next-generation therapeutics. We use computational protein design to create de novo α5β1-specific modulating miniprotein binders, called NeoNectins, that bind to and stabilize the open state of α5β1. When immobilized onto titanium surfaces and throughout 3D hydrogels, the NeoNectins outperform native fibronectin (FN) and RGD peptides in enhancing cell attachment and spreading, and NeoNectin-grafted titanium implants outperformed FN- and RGD-grafted implants in animal models in promoting tissue integration and bone growth. NeoNectins should be broadly applicable for tissue engineering and biomedicine.
History
DepositionNov 19, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jun 18, 2025Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Integrin alpha-5
B: Integrin beta-1
C: NeoNectin candidate 2
hetero molecules


Theoretical massNumber of molelcules
Total (without water)206,45817
Polymers202,5923
Non-polymers3,86514
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 3 types, 3 molecules ABC

#1: Protein Integrin alpha-5 / CD49 antigen-like family member E / Fibronectin receptor subunit alpha / Integrin alpha-F / VLA-5


Mass: 109695.867 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ITGA5, FNRA / Cell line (production host): ExpiCHO / Production host: Cricetulus griseus (Chinese hamster) / References: UniProt: P08648
#2: Protein Integrin beta-1 / Fibronectin receptor subunit beta / Glycoprotein IIa / GPIIA / VLA-4 subunit beta


Mass: 81743.961 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ITGB1, FNRB, MDF2, MSK12 / Cell line (production host): ExpiCHO / Production host: Cricetulus griseus (Chinese hamster) / References: UniProt: P05556
#3: Protein NeoNectin candidate 2


Mass: 11152.550 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)

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Sugars , 4 types, 8 molecules

#4: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 3 / Source method: obtained synthetically
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#5: Polysaccharide alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]beta-D- ...alpha-D-mannopyranose-(1-3)-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


Type: oligosaccharide / Mass: 1072.964 Da / Num. of mol.: 1 / Source method: obtained synthetically
DescriptorTypeProgram
DManpa1-3DManpa1-6[DManpa1-3]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,6,5/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3-3/a4-b1_b4-c1_c3-d1_c6-e1_e3-f1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{[(3+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#6: Polysaccharide 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 570.542 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4[LFucpa1-6]DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1221m-1a_1-5]/1-1-2/a4-b1_a6-c1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}[(6+1)][a-L-Fucp]{}}LINUCSPDB-CARE
#8: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 2 types, 6 molecules

#7: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Ca
#9: Chemical ChemComp-MN / MANGANESE (II) ION


Mass: 54.938 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Mn

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Details

Has ligand of interestN
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Protein complex of wild type integrin alpha-5 beta-1 with computationally designed protein NeoNectin candidate 2
Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Cricetulus griseus (Chinese hamster)
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMTrisTris1
2150 mMsodium chlorideNaCl1
31 mMmanganese chlorideMnCl21
SpecimenConc.: 0.09 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

MicroscopyModel: TFS GLACIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 36000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm
Specimen holderCryogen: NITROGEN
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Details: Collection at 30 degrees tilt

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.36 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 63256 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0035886
ELECTRON MICROSCOPYf_angle_d0.5348023
ELECTRON MICROSCOPYf_dihedral_angle_d14.9842265
ELECTRON MICROSCOPYf_chiral_restr0.045949
ELECTRON MICROSCOPYf_plane_restr0.0041021

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