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- EMDB-16146: SPA of Trypsin untreated Rotavirus TLP spike -

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Basic information

Entry
Database: EMDB / ID: EMD-16146
TitleSPA of Trypsin untreated Rotavirus TLP spike
Map data
Sample
  • Virus: Rotavirus A
    • Protein or peptide: Outer capsid protein VP4
    • Protein or peptide: Outer capsid glycoprotein VP7
    • Protein or peptide: Intermediate capsid protein VP6
    • Protein or peptide: Inner capsid protein VP2
  • Ligand: CALCIUM IONCalcium
  • Ligand: ZINC ION
Function / homology
Function and homology information


viral intermediate capsid / host cell endoplasmic reticulum lumen / T=13 icosahedral viral capsid / T=2 icosahedral viral capsid / host cell rough endoplasmic reticulum / viral inner capsid / host cytoskeleton / viral outer capsid / permeabilization of host organelle membrane involved in viral entry into host cell / symbiont entry into host cell via permeabilization of inner membrane ...viral intermediate capsid / host cell endoplasmic reticulum lumen / T=13 icosahedral viral capsid / T=2 icosahedral viral capsid / host cell rough endoplasmic reticulum / viral inner capsid / host cytoskeleton / viral outer capsid / permeabilization of host organelle membrane involved in viral entry into host cell / symbiont entry into host cell via permeabilization of inner membrane / host cell endoplasmic reticulum-Golgi intermediate compartment / viral nucleocapsid / host cell surface receptor binding / fusion of virus membrane with host plasma membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / structural molecule activity / RNA binding / membrane / metal ion binding
Similarity search - Function
Rotavirus VP2 / Rotavirus VP2 protein / Rotavirus A/C, major capsid protein VP6 / Rotavirus major capsid protein VP6 / Glycoprotein VP7 / Glycoprotein VP7, domain 1 / Glycoprotein VP7, domain 2 / Glycoprotein VP7 / Virus capsid protein, alpha-helical / Haemagglutinin outer capsid protein VP4, concanavalin-like domain ...Rotavirus VP2 / Rotavirus VP2 protein / Rotavirus A/C, major capsid protein VP6 / Rotavirus major capsid protein VP6 / Glycoprotein VP7 / Glycoprotein VP7, domain 1 / Glycoprotein VP7, domain 2 / Glycoprotein VP7 / Virus capsid protein, alpha-helical / Haemagglutinin outer capsid protein VP4, concanavalin-like domain / Outer Capsid protein VP4 (Hemagglutinin) Concanavalin-like domain / Rotavirus VP4 helical domain / Rotavirus VP4 helical domain / Outer capsid protein VP4 / Rotavirus VP4, membrane interaction domain superfamily / Rotavirus VP4, membrane interaction domain / Rotavirus VP4 membrane interaction domain / Viral capsid/haemagglutinin protein / Concanavalin A-like lectin/glucanase domain superfamily
Similarity search - Domain/homology
Outer capsid protein VP4 / Outer capsid glycoprotein VP7 / Inner capsid protein VP2 / Intermediate capsid protein VP6
Similarity search - Component
Biological speciesRotavirus A
Methodsingle particle reconstruction / cryo EM / Resolution: 2.7 Å
AuthorsShah PNM / Stuart DI
Funding support United Kingdom, 5 items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MR/N00065X/1 United Kingdom
CAMS Innovation Fund for Medical Sciences (CIFMS)2018-I2M-2-002 United Kingdom
Wellcome Trust03141/Z/16/Z United Kingdom
Wellcome Trust060208/Z/00/Z United Kingdom
Wellcome Trust093305/Z/10/Z United Kingdom
CitationJournal: Cell Host Microbe / Year: 2023
Title: Characterization of the rotavirus assembly pathway in situ using cryoelectron tomography.
Authors: Pranav N M Shah / James B Gilchrist / Björn O Forsberg / Alister Burt / Andrew Howe / Shyamal Mosalaganti / William Wan / Julika Radecke / Yuriy Chaban / Geoff Sutton / David I Stuart / Mark Boyce /
Abstract: Rotavirus assembly is a complex process that involves the stepwise acquisition of protein layers in distinct intracellular locations to form the fully assembled particle. Understanding and ...Rotavirus assembly is a complex process that involves the stepwise acquisition of protein layers in distinct intracellular locations to form the fully assembled particle. Understanding and visualization of the assembly process has been hampered by the inaccessibility of unstable intermediates. We characterize the assembly pathway of group A rotaviruses observed in situ within cryo-preserved infected cells through the use of cryoelectron tomography of cellular lamellae. Our findings demonstrate that the viral polymerase VP1 recruits viral genomes during particle assembly, as revealed by infecting with a conditionally lethal mutant. Additionally, pharmacological inhibition to arrest the transiently enveloped stage uncovered a unique conformation of the VP4 spike. Subtomogram averaging provided atomic models of four intermediate states, including a pre-packaging single-layered intermediate, the double-layered particle, the transiently enveloped double-layered particle, and the fully assembled triple-layered virus particle. In summary, these complementary approaches enable us to elucidate the discrete steps involved in forming an intracellular rotavirus particle.
History
DepositionNov 16, 2022-
Header (metadata) releaseApr 5, 2023-
Map releaseApr 5, 2023-
UpdateApr 26, 2023-
Current statusApr 26, 2023Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_16146.png

Downloads & links

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Map

FileDownload / File: emd_16146.map.gz / Format: CCP4 / Size: 343 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.82 Å/pix.
x 448 pix.
= 367.36 Å		0.82 Å/pix.
x 448 pix.
= 367.36 Å		0.82 Å/pix.
x 448 pix.
= 367.36 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.82 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.014
Minimum - Maximum-0.029435914 - 0.0750895
Average (Standard dev.)0.00048916636 (±0.0045257006)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions448448448
Spacing448448448
CellA=B=C: 367.36 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_16146_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_16146_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Rotavirus A

EntireName: Rotavirus A
Components
  • Virus: Rotavirus A
    • Protein or peptide: Outer capsid protein VP4
    • Protein or peptide: Outer capsid glycoprotein VP7
    • Protein or peptide: Intermediate capsid protein VP6
    • Protein or peptide: Inner capsid protein VP2
  • Ligand: CALCIUM IONCalcium
  • Ligand: ZINC ION

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Supramolecule #1: Rotavirus A

SupramoleculeName: Rotavirus A / type: virus / ID: 1 / Parent: 0 / Macromolecule list: #1-#4 / NCBI-ID: 28875 / Sci species name: Rotavirus A / Virus type: VIRION / Virus isolate: STRAIN / Virus enveloped: No / Virus empty: No

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Macromolecule #1: Outer capsid protein VP4

MacromoleculeName: Outer capsid protein VP4 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Rotavirus A
Molecular weightTheoretical: 86.767953 KDa
Recombinant expressionOrganism: Chlorocebus aethiops aethiops (mammal)
SequenceString: MASLIYRQLL TNSYTVDLSD EIQEIGSTKS QNVTINPGPF AQTGYAPVNW GPGEINDSTT VGPLLDGPYQ PTTFNPPVDY WMLLAPTTP GVIVEGTNNT DRWLATILIE PNVQSENRTY TIFGIQEQLT VSNTSQDQWK FIDVVKTTAN GSIGQYGPLL S SPKLYAVM ...String:
MASLIYRQLL TNSYTVDLSD EIQEIGSTKS QNVTINPGPF AQTGYAPVNW GPGEINDSTT VGPLLDGPYQ PTTFNPPVDY WMLLAPTTP GVIVEGTNNT DRWLATILIE PNVQSENRTY TIFGIQEQLT VSNTSQDQWK FIDVVKTTAN GSIGQYGPLL S SPKLYAVM KHNEKLYTYE GQTPNATTAH YSTTNYDSVN MTAFCDFYII PRSEESKCTE YINNGLPPIQ NTRNVVPLSL TA RDVIHYR AQANEDIVIS KTSLWKEMQY NRDITIRFKF ANTIIKSGGL GYKWSEISFK PANYQYTYTR DGEEVTAHTT CSV NGMNDF SFNGGYLPTD FVVSKFEVIK ENSYVYIDYW DDSQAFRNVV YVRSLAANLN SVMCTGGSYN FSLPVGQWPV LTGG AVSLH SAGVTLSTQF TDFVSLNSLR FRFRLAVEEP HFKLTRTRLD RLYGLPAADP NNGKEYYEIA GRFSLISLVP SNDDY QTPI ANSVTVRQDL ERQLGELREE FNALSQEIAM SQLIDLALLP LDMFSMFSGI KSTIDAAKSM ATNVMKKFKK SGLANS VST LTDSLSDAAS SISRGSSIRS IGSSASAWTD VSTQITDISS SVSSVSTQTS TISRRLRLKE MATQTEGMNF DDISAAV LK TKIDKSTQIS PNTIPDIVTE ASEKFIPNRA YRVINNDDVF EAGIDGKFFA YKVDTFEEIP FDVQKFADLV TDSPVISA I IDFKTLKNLN DNYGISRQQA FNLLRSDPRV LREFINQDNP IIRNRIEQLI MQCRL

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Macromolecule #2: Outer capsid glycoprotein VP7

MacromoleculeName: Outer capsid glycoprotein VP7 / type: protein_or_peptide / ID: 2 / Number of copies: 13 / Enantiomer: LEVO
Source (natural)Organism: Rotavirus A
Molecular weightTheoretical: 37.230664 KDa
Recombinant expressionOrganism: Chlorocebus aethiops aethiops (mammal)
SequenceString: MYGIEYTTVL TFLISIILLN YILKSLTRIM DFIIYRFLFI IVILSPFLRA QNYGINLPIT GSMDIAYANS TQEEPFLTST LCLYYPTEA ATEINDNSWK DTLSQLFLTK GWPTGSVYFK EYTNIASFSV DPQLYCDYNV VLMKYDATLQ LDMSELADLI L NEWLCNPM ...String:
MYGIEYTTVL TFLISIILLN YILKSLTRIM DFIIYRFLFI IVILSPFLRA QNYGINLPIT GSMDIAYANS TQEEPFLTST LCLYYPTEA ATEINDNSWK DTLSQLFLTK GWPTGSVYFK EYTNIASFSV DPQLYCDYNV VLMKYDATLQ LDMSELADLI L NEWLCNPM DITLYYYQQT DEANKWISMG SSCTIKVCPL NTQTLGIGCL TTDATTFEEV ATAEKLVITD VVDGVNHKLD VT TATCTIR NCKKLGPREN VAVIQVGGSD ILDITADPTT APQTERMMRI NWKKWWQVFY TVVDYVDQII QVMSKRSRSL NSA AFYYRV

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Macromolecule #3: Intermediate capsid protein VP6

MacromoleculeName: Intermediate capsid protein VP6 / type: protein_or_peptide / ID: 3 / Number of copies: 13 / Enantiomer: LEVO
Source (natural)Organism: Rotavirus A
Molecular weightTheoretical: 44.910738 KDa
Recombinant expressionOrganism: Chlorocebus aethiops aethiops (mammal)
SequenceString: MDVLYSLSKT LKDARDKIVE GTLYSNVSDL IQQFNQMIIT MNGNEFQTGG IGNLPIRNWN FNFGLLGTTL LNLDANYVET ARNTIDYFV DFVDNVCMDE MVRESQRNGI APQSDSLRKL SAIKFKRINF DNSSEYIENW NLQNRRQRTG FTFHKPNIFP Y SASFTLNR ...String:
MDVLYSLSKT LKDARDKIVE GTLYSNVSDL IQQFNQMIIT MNGNEFQTGG IGNLPIRNWN FNFGLLGTTL LNLDANYVET ARNTIDYFV DFVDNVCMDE MVRESQRNGI APQSDSLRKL SAIKFKRINF DNSSEYIENW NLQNRRQRTG FTFHKPNIFP Y SASFTLNR SQPAHDNLMG TMWLNAGSEI QVAGFDYSCA INAPANIQQF EHIVPLRRVL TTATITLLPD AERFSFPRVI NS ADGATTW FFNPVILRPN NVEVEFLLNG QIINTYQARF GTIVARNFDT IRLSFQLMRP PNMTPAVAVL FPNAQPFEHH ATV GLTLRI ESAVCESVLA DASETLLANV TSVRQEYAIP VGPVFPPGMN WTDLITNYSP SREDNLQRVF TVASIRSMLI K

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Macromolecule #4: Inner capsid protein VP2

MacromoleculeName: Inner capsid protein VP2 / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Rotavirus A
Molecular weightTheoretical: 102.412961 KDa
Recombinant expressionOrganism: Chlorocebus aethiops aethiops (mammal)
SequenceString: MAYRKRGARR ETNLKQDERM QEKEDSKNIN NDSPKSQLSE KVLSKKEEII TDNQEEVKIS DEVKKSNKEE SKQLLEVLKT KEEHQKEVQ YEILQKTIPT FEPKESILKK LEDIKPEQAK AQTKLFRIFE PRQKPIYIAN GEKERRNRIY WKLKKDTLPD G DYDVREYF ...String:
MAYRKRGARR ETNLKQDERM QEKEDSKNIN NDSPKSQLSE KVLSKKEEII TDNQEEVKIS DEVKKSNKEE SKQLLEVLKT KEEHQKEVQ YEILQKTIPT FEPKESILKK LEDIKPEQAK AQTKLFRIFE PRQKPIYIAN GEKERRNRIY WKLKKDTLPD G DYDVREYF LNLYDQVLTE MPDYLLLKDM AVENKNSRDA GKVVDSETAS ICDAIFQDEE TEGAVARFIA EMRQRVQADR NV VNYPSIL HPIDYAFNEY FLQHQLVEPL NNDIIFNYIP ERIRNDVNYI LNMDRNLPST ARYIRPNLLQ DRLNLHDNFE SLW DTITTS NYILARSVVP DLKELVSTEA QIQKMSQDLQ LEALTIQSET QFLTGINSQA ANDCFKTLIA AMLSQRTMSL DFVT TNYMS LISGMWLLTV VPNDMFIRES LVACQLAIVN TIIYVAFGMQ RMHYRNGDPQ TPFQIAEQQI QNFQVANWLH FVNNN YFRQ VVIDGVLNQV LNDNIRNGHV INQLMEALMQ LSRQQFPTMP VDYKRSIQRG ILLLSNRLGQ LVDLTRLLAY SYETLM ACV TMNMQHVQTL TTEKLQLTSV TSLCMLIGNA TVIPSPQTLF HYYNVNVNFH SNYNERINDA VAIITAANRL NLYQKKM KA IVEDFLKRLH IFDVAVAPDD QMYRLRDRLR LLPVEVRRLD IFNLILMAMD QIERASDKIA QGVIIAYRDM QLERDEMY G YVNIARNLDG FQQINLEELM RTGSYAQITN MLLNNQPVAL VGALPFVTDS SVISLIAILD ATVFAQIVKL RKVDTLKPI LYKINSDSND FYLVANYDWV PISTTKVYKQ VPVQFDFRNS MHMLTSNLTF TVYSDLLAFV SADTVEPINA VAFDNMRIMN EL

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Macromolecule #5: CALCIUM ION

MacromoleculeName: CALCIUM ION / type: ligand / ID: 5 / Number of copies: 39 / Formula: CA
Molecular weightTheoretical: 40.078 Da

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Macromolecule #6: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 6 / Number of copies: 5 / Formula: ZN
Molecular weightTheoretical: 65.409 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

Concentration7 mg/mL
BufferpH: 7.5
GridModel: Quantifoil R2/1 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.5 µm
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 39.8 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 4.0)
Final 3D classificationSoftware - Name: RELION (ver. 4.0)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 4.0)
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.7 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 4.0) / Number images used: 36363
FSC plot (resolution estimation)

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