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- EMDB-12634: Cryo-EM structure of human integrin alpha5beta1 (open form) in co... -

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Basic information

Entry
Database: EMDB / ID: EMD-12634
TitleCryo-EM structure of human integrin alpha5beta1 (open form) in complex with fibronectin and TS2/16 Fv-clasp
Map data
Sample
  • Complex: Ternary complex of integrin a5b1, fibronectin and TS2/16 Fv-clasp
    • Protein or peptide: Integrin alpha-5
    • Protein or peptide: Integrin beta-1
    • Protein or peptide: Isoform 1 of Fibronectin
    • Protein or peptide: TS2/16 VH(S112C)-SARAH Chimera
    • Protein or peptide: TS2/16 VL-SARAH(S37C) Chimera
  • Ligand: MANGANESE (II) ION
Function / homology
Function and homology information


integrin alpha8-beta1 complex / integrin alpha3-beta1 complex / integrin alpha5-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 / regulation of inward rectifier potassium channel activity / regulation of collagen catabolic process ...integrin alpha8-beta1 complex / integrin alpha3-beta1 complex / integrin alpha5-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 / regulation of inward rectifier potassium channel activity / regulation of collagen catabolic process / integrin alpha9-beta1 complex / integrin alpha4-beta1 complex / cell-cell adhesion mediated by integrin / C-X3-C chemokine binding / cardiac cell fate specification / integrin binding involved in cell-matrix adhesion / integrin alpha1-beta1 complex / collagen binding involved in cell-matrix adhesion / integrin alpha2-beta1 complex / Localization of the PINCH-ILK-PARVIN complex to focal adhesions / regulation of synapse pruning / reactive gliosis / formation of radial glial scaffolds / cerebellar climbing fiber to Purkinje cell synapse / Other semaphorin interactions / negative regulation of monocyte activation / Formation of the ureteric bud / CD40 signaling pathway / positive regulation of vascular endothelial growth factor signaling pathway / calcium-independent cell-matrix adhesion / integrin alphav-beta1 complex / positive regulation of fibroblast growth factor receptor signaling pathway / negative regulation of transforming growth factor beta production / Fibronectin matrix formation / basement membrane organization / Extracellular matrix organization / positive regulation of substrate-dependent cell migration, cell attachment to substrate / myelin sheath abaxonal region / neural crest cell migration involved in autonomic nervous system development / alphav-beta3 integrin-vitronectin complex / peptidase activator activity / CHL1 interactions / cardiac muscle cell myoblast differentiation / Laminin interactions / RUNX2 regulates genes involved in cell migration / fibrinogen complex / MET interacts with TNS proteins / peptide cross-linking / germ cell migration / leukocyte tethering or rolling / cardiac muscle cell differentiation / 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 / positive regulation of fibroblast migration / positive regulation of vascular endothelial growth factor receptor signaling pathway / cell migration involved in sprouting angiogenesis / wound healing, spreading of epidermal cells / regulation of spontaneous synaptic transmission / heterotypic cell-cell adhesion / myoblast differentiation / integrin complex / positive regulation of cell-substrate adhesion / dendrite morphogenesis / Basigin interactions / biological process involved in interaction with symbiont / Molecules associated with elastic fibres / proteoglycan binding / muscle organ development / negative regulation of Rho protein signal transduction / lamellipodium assembly / heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules / MET activates PTK2 signaling / extracellular matrix structural constituent / cell adhesion mediated by integrin / negative regulation of vasoconstriction / leukocyte cell-cell adhesion / Syndecan interactions / epidermal growth factor receptor binding / positive regulation of wound healing / maintenance of blood-brain barrier / positive regulation of neuroblast proliferation / sarcomere organization / p130Cas linkage to MAPK signaling for integrins / cell-substrate adhesion / positive regulation of sprouting angiogenesis / endodermal cell differentiation / TGF-beta receptor signaling activates SMADs / homophilic cell adhesion via plasma membrane adhesion molecules / establishment of mitotic spindle orientation / cleavage furrow / glial cell projection
Similarity search - Function
Fibronectin type I domain / Fibronectin, type I / Fibronectin type-I domain signature. / Fibronectin type-I domain profile. / Fibronectin type 1 domain / 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 ...Fibronectin type I domain / Fibronectin, type I / Fibronectin type-I domain signature. / Fibronectin type-I domain profile. / Fibronectin type 1 domain / 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 alpha Ig-like domain 3 / Integrin beta tail domain / Integrin beta subunit, tail / Integrin beta tail domain superfamily / Integrin_B_tail / Fibronectin type II domain / Integrin beta subunit, VWA domain / Integrin beta subunit / Integrin beta N-terminal / Fibronectin type II domain superfamily / Fibronectin type II domain / Integrin beta chain VWA domain / Integrin plexin domain / Fibronectin type-II collagen-binding domain signature. / Integrins beta chain cysteine-rich domain signature. / Fibronectin type-II collagen-binding domain profile. / Fibronectin type 2 domain / Integrin beta subunits (N-terminal portion of extracellular region) / EGF-like domain, extracellular / EGF-like domain / Integrin alpha-2 / Integrin alpha Ig-like domain 1 / : / Integrin alpha Ig-like domain 2 / Integrin alpha chain / Integrin alpha beta-propellor / Integrin alpha chain, C-terminal cytoplasmic region, conserved site / Integrins alpha chain signature. / FG-GAP repeat profile. / Integrin alpha (beta-propellor repeats). / FG-GAP repeat / FG-GAP repeat / Integrin alpha, N-terminal / Integrin domain superfamily / PSI domain / domain found in Plexins, Semaphorins and Integrins / Kringle-like fold / von Willebrand factor A-like domain superfamily / Fibronectin type III domain / EGF-like domain signature 1. / Fibronectin type 3 domain / Fibronectin type-III domain profile. / Fibronectin type III / Fibronectin type III superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
Fibronectin / Integrin beta-1 / Integrin alpha-5
Similarity search - Component
Biological speciesHomo sapiens (human) / Human (human) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsSchumacher S / Dedden D / Vazquez Nunez R / Matoba K / Takagi J / Biertumpfel C / Mizuno N
Funding support Germany, European Union, United States, 6 items
OrganizationGrant numberCountry
Max Planck Society Germany
Other privateBoehringer Ingelheim Foundation Plus 3 Program Germany
European Research Council (ERC)ERC-CoG 724209European Union
European Molecular Biology Organization (EMBO)Young Investigator ProgramEuropean Union
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI) United States
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS) United States
CitationJournal: Sci Adv / Year: 2021
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
DepositionMar 17, 2021-
Header (metadata) releaseJun 2, 2021-
Map releaseJun 2, 2021-
UpdateJun 2, 2021-
Current statusJun 2, 2021Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.0292
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.0292
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7nwl
  • Surface level: 0.0292
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_12634.png

Downloads & links

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Map

FileDownload / File: emd_12634.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.384 Å
Density
Contour LevelBy AUTHOR: 0.0292 / Movie #1: 0.0292
Minimum - Maximum-0.07339407 - 0.15871869
Average (Standard dev.)0.00011240059 (±0.0019957777)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 498.24 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.3841.3841.384
M x/y/z360360360
origin x/y/z0.0000.0000.000
length x/y/z498.240498.240498.240
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ420420420
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS360360360
D min/max/mean-0.0730.1590.000

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Supplemental data

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Mask #1

Fileemd_12634_msk_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
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Additional map: focused map around the high resolution parts

Fileemd_12634_additional_1.map
Annotationfocused map around the high resolution parts
Projections & Slices
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Additional map: working map including also low resolution parts

Fileemd_12634_additional_2.map
Annotationworking map including also low resolution parts
Projections & Slices
AxesZYX

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Histogram

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Half map: #2

Fileemd_12634_half_map_1.map
Projections & Slices
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Slices (1/2)
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Half map: #1

Fileemd_12634_half_map_2.map
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Sample components

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Entire : Ternary complex of integrin a5b1, fibronectin and TS2/16 Fv-clasp

EntireName: Ternary complex of integrin a5b1, fibronectin and TS2/16 Fv-clasp
Components
  • Complex: Ternary complex of integrin a5b1, fibronectin and TS2/16 Fv-clasp
    • Protein or peptide: Integrin alpha-5
    • Protein or peptide: Integrin beta-1
    • Protein or peptide: Isoform 1 of Fibronectin
    • Protein or peptide: TS2/16 VH(S112C)-SARAH Chimera
    • Protein or peptide: TS2/16 VL-SARAH(S37C) Chimera
  • Ligand: MANGANESE (II) ION

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Supramolecule #1: Ternary complex of integrin a5b1, fibronectin and TS2/16 Fv-clasp

SupramoleculeName: Ternary complex of integrin a5b1, fibronectin and TS2/16 Fv-clasp
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 210 KDa

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Macromolecule #1: Integrin alpha-5

MacromoleculeName: Integrin alpha-5 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Human (human) / Tissue: placenta
Molecular weightTheoretical: 110.111555 KDa
SequenceString: FNLDAEAPAV LSGPPGSFFG FSVEFYRPGT DGVSVLVGAP KANTSQPGVL QGGAVYLCPW GASPTQCTPI EFDSKGSRLL ESSLSSSEG EEPVEYKSLQ WFGATVRAHG SSILACAPLY SWRTEKEPLS DPVGTCYLST DNFTRILEYA PCRSDFSWAA G QGYCQGGF ...String:
FNLDAEAPAV LSGPPGSFFG FSVEFYRPGT DGVSVLVGAP KANTSQPGVL QGGAVYLCPW GASPTQCTPI EFDSKGSRLL ESSLSSSEG EEPVEYKSLQ WFGATVRAHG SSILACAPLY SWRTEKEPLS DPVGTCYLST DNFTRILEYA PCRSDFSWAA G QGYCQGGF SAEFTKTGRV VLGGPGSYFW QGQILSATQE QIAESYYPEY LINLVQGQLQ TRQASSIYDD SYLGYSVAVG EF SGDDTED FVAGVPKGNL TYGYVTILNG SDIRSLYNFS GEQMASYFGY AVAATDVNGD GLDDLLVGAP LLMDRTPDGR PQE VGRVYV YLQHPAGIEP TPTLTLTGHD EFGRFGSSLT PLGDLDQDGY NDVAIGAPFG GETQQGVVFV FPGGPGGLGS KPSQ VLQPL WAASHTPDFF GSALRGGRDL DGNGYPDLIV GSFGVDKAVV YRGRPIVSAS ASLTIFPAMF NPEERSCSLE GNPVA CINL SFCLNASGKH VADSIGFTVE LQLDWQKQKG GVRRALFLAS RQATLTQTLL IQNGAREDCR EMKIYLRNES EFRDKL SPI HIALNFSLDP QAPVDSHGLR PALHYQSKSR IEDKAQILLD CGEDNICVPD LQLEVFGEQN HVYLGDKNAL NLTFHAQ NV GEGGAYEAEL RVTAPPEAEY SGLVRHPGNF SSLSCDYFAV NQSRLLVCDL GNPMKAGASL WGGLRFTVPH LRDTKKTI Q FDFQILSKNL NNSQSDVVSF RLSVEAQAQV TLNGVSKPEA VLFPVSDWHP RDQPQKEEDL GPAVHHVYEL INQGPSSIS QGVLELSCPQ ALEGQQLLYV TRVTGLNCTT NHPINPKGLE LDPEGSLHHQ QKREAPSRSS ASSGPQILKC PEAECFRLRC ELGPLHQQE SQSLQLHFRV WAKTFLQREH QPFSLQCEAV YKALKMPYRI LPRQLPQKER QVATAVQWTK AEGSYGVPLW I IILAILFG LLLLGLLIYI LYKLGFFKRS LPYGTAMEKA QLKPPATSDA

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Macromolecule #2: Integrin beta-1

MacromoleculeName: Integrin beta-1 / type: protein_or_peptide / ID: 2 / Details: Sequenced used from GenBank entry CAA30790 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Human (human) / Tissue: placenta
Molecular weightTheoretical: 86.338594 KDa
SequenceString: QTDENRCLKA NAKSCGECIQ AGPNCGWCTN STFLQEGMPT SARCDDLEAL KKKGCPPDDI ENPRGSKDIK KNKNVTNRSK GTAEKLKPE DIHQIQPQQL VLRLRSGEPQ TFTLKFKRAE DYPIDLYYLM DLSYSMKDDL ENVKSLGTDL MNEMRRITSD F RIGFGSFV ...String:
QTDENRCLKA NAKSCGECIQ AGPNCGWCTN STFLQEGMPT SARCDDLEAL KKKGCPPDDI ENPRGSKDIK KNKNVTNRSK GTAEKLKPE DIHQIQPQQL VLRLRSGEPQ TFTLKFKRAE DYPIDLYYLM DLSYSMKDDL ENVKSLGTDL MNEMRRITSD F RIGFGSFV EKTVMPYIST TPAKLRNPCT SEQNCTTPFS YKNVLSLTNK GEVFNELVGK QRISGNLDSP EGGFDAIMQV AV CGSLIGW RNVTRLLVFS TDAGFHFAGD GKLGGIVLPN DGQCHLENNM YTMSHYYDYP SIAHLVQKLS ENNIQTIFAV TEE FQPVYK ELKNLIPKSA VGTLSANSSN VIQLIIDAYN SLSSEVILEN GKLSEGVTIS YKSYCKNGVN GTGENGRKCS NISI GDEVQ FEISITSNKC PKKDSDSFKI RPLGFTEEVE VILQYICECE CQSEGIPESP KCHEGNGTFE CGACRCNEGR VGRHC ECST DEVNSEDMDA YCRKENSSEI CSNNGECVCG QCVCRKRDNT NEIYSGKFCE CDNFNCDRSN GLICGGNGVC KCRVCE CNP NYTGSACDCS LDTSTCEASN GQICNGRGIC ECGVCKCTDP KFQGQTCEMC QTCLGVCAEH KECVQCRAFN KGEKKDT CT QECSYFNITK VESRDKLPQP VQPDPVSHCK EKDVDDCWFY FTYSVNGNNE VMVHVVENPE CPTGPDIIPI VAGVVAGI V LIGLALLLIW KLLMIIHDRR EFAKFEKEKM NAKWDTGENP IYKSAVTTVV NPKYEGK

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Macromolecule #3: Isoform 1 of Fibronectin

MacromoleculeName: Isoform 1 of Fibronectin / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 39.98116 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString: PLSPPTNLHL EANPDTGVLT VSWERSTTPD ITGYRITTTP TNGQQGNSLE EVVHADQSSC TFDNLSPGLE YNVSVYTVKD DKESVPISD TIIPAVPPPT DLRFTNIGPD TMRVTWAPPP SIDLTNFLVR YSPVKNEEDV AELSISPSDN AVVLTNLLPG T EYVVSVSS ...String:
PLSPPTNLHL EANPDTGVLT VSWERSTTPD ITGYRITTTP TNGQQGNSLE EVVHADQSSC TFDNLSPGLE YNVSVYTVKD DKESVPISD TIIPAVPPPT DLRFTNIGPD TMRVTWAPPP SIDLTNFLVR YSPVKNEEDV AELSISPSDN AVVLTNLLPG T EYVVSVSS VYEQHESTPL RGRQKTGLDS PTGIDFSDIT ANSFTVHWIA PRATITGYRI RHHPEHFSGR PREDRVPHSR NS ITLTNLT PGTEYVVSIV ALNGREESPL LIGQQSTVSD VPRDLEVVAA TPTSLLISWD APAVTVRYYR ITYGETGGNS PVQ EFTVPG SKSTATISGL KPGVDYTITV YAVTGRGDSP ASSKPISINY RT

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Macromolecule #4: TS2/16 VH(S112C)-SARAH Chimera

MacromoleculeName: TS2/16 VH(S112C)-SARAH Chimera / type: protein_or_peptide / ID: 4 / Details: Chimera: Mus musculus, Homo sapiens; 10090, 9660; / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 19.463992 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString:
MDVKLVESGG GLVKPGGSLK LSCAASGFTF SSYTMSWVRQ TPEKRLEWVA TISSGGSYTY YPDSVKGRFT ISRDKAKNTL YLQMGSLKS EDTAMYYCTR IGYDEDYAMD HWGQGTSVTV CSGSDYEFLK SWTVEDLQKR LLALDPMMEQ EIEEIRQKYQ S KRQPILDA IEAK

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Macromolecule #5: TS2/16 VL-SARAH(S37C) Chimera

MacromoleculeName: TS2/16 VL-SARAH(S37C) Chimera / type: protein_or_peptide / ID: 5 / Details: Chimera: Mus musculus, Homo sapiens; 10090, 9660; / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 18.270742 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString:
GSHMQIVVTQ RPTTMAASPG DKIIITCSVS SIISSNYLHW YSQKPGFSPK LLIYRTSNLA SGVPPRFSGS GSGTSYSLTI GTMEAEDVA TYYCQQGSDI PLTFGDGTKL DLKRGSDYEF LKSWTVEDLQ KRLLALDPMM EQEIEEIRQK YQCKRQPILD A IEAK

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Macromolecule #11: MANGANESE (II) ION

MacromoleculeName: MANGANESE (II) ION / type: ligand / ID: 11 / Number of copies: 7 / Formula: MN
Molecular weightTheoretical: 54.938 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration0.15 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormulaName
50.0 mMTristris(hydroxymethyl)aminomethane
150.0 mMNaClsodium chloride
1.0 mMMnCl2manganese chloride
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: AIR / Details: GloQube at 20 mA
VitrificationCryogen name: ETHANE-PROPANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV
DetailsIntegrin 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.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Digitization - Dimensions - Width: 6144 pixel / Digitization - Dimensions - Height: 4096 pixel / Digitization - Sampling interval: 5.0 µm / Number grids imaged: 1 / Number real images: 9431 / Average exposure time: 7.39 sec. / Average electron dose: 59.7 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.62 mm / Nominal defocus max: 3.2 µm / Nominal defocus min: -0.5 µm / Nominal magnification: 64000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Detailsinitial image processing automatically by FOCUS pipeline: gain normalization, motion correction and dose-weighting in MotionCor2 CTF estimation by GCTF
Particle selectionNumber selected: 4218951
CTF correctionSoftware - Name: Gctf
Startup modelType of model: OTHER
Details: 30 A-low pass filtered model from previous data analysis was used: 3754 particles were manually picked and used for 2D classification to generate a template for gautomatch, which picked ...Details: 30 A-low pass filtered model from previous data analysis was used: 3754 particles were manually picked and used for 2D classification to generate a template for gautomatch, which picked 105351 particles. Further 2D classification of 10949 classes, initial model generation and 3D in Relion yielded a prominent model from 16765 particles.
Final reconstructionNumber classes used: 2 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 680610
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.0)
Final 3D classificationNumber classes: 6 / Avg.num./class: 25000 / Software - Name: RELION (ver. 3.0) / Details: 1492856 particles in total
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial model
PDB IDChain

4wk0

chain_id: A

4wk0

chain_id: B

3vi3

chain_id: A

3vi3

chain_id: B

1fnf

chain_id: A

5xcx

chain_id: A

5xcx

chain_id: B
RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-7nwl:
Cryo-EM structure of human integrin alpha5beta1 (open form) in complex with fibronectin and TS2/16 Fv-clasp

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