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- EMDB-43589: The base complex of the AcMNPV baculovirus nucleocapsid (Class 2,... -

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Basic information

Entry
Database: EMDB / ID: EMD-43589
TitleThe base complex of the AcMNPV baculovirus nucleocapsid (Class 2, localised reconstruction)
Map dataSharpened map
Sample
  • Virus: Autographa californica multiple nucleopolyhedrovirus
    • Protein or peptide: Major capsid protein
    • Protein or peptide: Capsid-associated protein VP80
    • Protein or peptide: Occlusion-derived virus envelope protein E27
    • Protein or peptide: Protein C42
    • Protein or peptide: Protein AC109
    • Protein or peptide: Protein AC142
    • Protein or peptide: 38K (AC98)
  • Ligand: ZINC ION
KeywordsNucleocapsid / Base / baculovirus / virus / AcMNPV / VP39 / VIRAL PROTEIN
Function / homology
Function and homology information


transport of viral material towards nucleus / exit of virus from host cell nucleus by nuclear egress / host cell nuclear matrix / symbiont-mediated perturbation of host cell cycle progression / nuclear capsid assembly / virion component / viral capsid / host cell / viral nucleocapsid / host cell cytoplasm ...transport of viral material towards nucleus / exit of virus from host cell nucleus by nuclear egress / host cell nuclear matrix / symbiont-mediated perturbation of host cell cycle progression / nuclear capsid assembly / virion component / viral capsid / host cell / viral nucleocapsid / host cell cytoplasm / viral envelope / host cell nucleus / virion membrane / structural molecule activity / protein homodimerization activity / DNA binding / membrane
Similarity search - Function
Protein of unknown function DUF694 / Protein of unknown function (DUF705) / Baculovirus Y142 protein / Autographa californica nuclear polyhedrosis virus (AcMNPV), Orf109 / Nucleopolyhedrovirus capsid P80/P87 / Baculovirus Y142 protein / Autographa californica nuclear polyhedrosis virus (AcMNPV) protein / Nucleopolyhedrovirus capsid protein P87 / HAD-superfamily phosphatase, subfamily IIIC / Baculovirus occlusion-derived virus envelope EC27 ...Protein of unknown function DUF694 / Protein of unknown function (DUF705) / Baculovirus Y142 protein / Autographa californica nuclear polyhedrosis virus (AcMNPV), Orf109 / Nucleopolyhedrovirus capsid P80/P87 / Baculovirus Y142 protein / Autographa californica nuclear polyhedrosis virus (AcMNPV) protein / Nucleopolyhedrovirus capsid protein P87 / HAD-superfamily phosphatase, subfamily IIIC / Baculovirus occlusion-derived virus envelope EC27 / Baculovirus occlusion-derived virus envelope protein EC27 / Autographa californica nuclear polyhedrosis virus (AcMNPV), C42 / Autographa californica nuclear polyhedrosis virus (AcMNPV), Orf101 / Baculovirus major capsid protein VP39 / Baculovirus major capsid protein VP39 / HAD superfamily / HAD-like superfamily
Similarity search - Domain/homology
Major capsid protein / Uncharacterized 38.0 kDa protein in P143-LEF5 intergenic region / Protein C42 / Protein AC109 / Protein AC142 / Occlusion-derived virus envelope protein E27 / Capsid-associated protein VP80
Similarity search - Component
Biological speciesAutographa californica multiple nucleopolyhedrovirus
Methodsingle particle reconstruction / cryo EM / Resolution: 4.78 Å
AuthorsJohnstone BA / Koszalka P / Ha J / Venugopal H / Coulibaly F
Funding support Australia, 1 items
OrganizationGrant numberCountry
Australian Research Council (ARC)DP210103388 Australia
CitationJournal: Sci Adv / Year: 2024
Title: The nucleocapsid architecture and structural atlas of the prototype baculovirus define the hallmarks of a new viral realm.
Authors: Bronte A Johnstone / Joshua M Hardy / Jungmin Ha / Anamarija Butkovic / Paulina Koszalka / Cathy Accurso / Hariprasad Venugopal / Alex de Marco / Mart Krupovic / Fasséli Coulibaly /
Abstract: Baculovirus is the most studied insect virus owing to a broad ecological distribution and ease of engineering for biotechnological applications. However, its structure and evolutionary place in the ...Baculovirus is the most studied insect virus owing to a broad ecological distribution and ease of engineering for biotechnological applications. However, its structure and evolutionary place in the virosphere remain enigmatic. Using cryo-electron microscopy, we show that the nucleocapsid forms a covalently cross-linked helical tube protecting a highly compacted 134-kilobase pair DNA genome. The ends of the tube are sealed by the base and cap substructures, which share a 126-subunit hub but differ in components that promote actin tail-mediated propulsion and nuclear entry of the nucleocapsid, respectively. Unexpectedly, sensitive searches for hidden evolutionary links show that the morphogenetic machinery and conserved oral infectivity factors originated within the lineage of baculo-like viruses (class ). The unique viral architecture and structural atlas of hallmark proteins firmly place these viruses into a separate new realm, the highest taxonomy rank, and provide a structural framework to expand their use as sustainable bioinsecticides and biomedical tools.
History
DepositionFeb 1, 2024-
Header (metadata) releaseNov 6, 2024-
Map releaseNov 6, 2024-
UpdateMay 21, 2025-
Current statusMay 21, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_43589.png

Downloads & links

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Map

FileDownload / File: emd_43589.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationSharpened map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.41 Å/pix.
x 384 pix.
= 541.44 Å		1.41 Å/pix.
x 384 pix.
= 541.44 Å		1.41 Å/pix.
x 384 pix.
= 541.44 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.41 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.294
Minimum - Maximum-0.81570506 - 1.6152053
Average (Standard dev.)-0.00017493716 (±0.07947818)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 541.44 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_43589_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: Raw, unsharpened map

Fileemd_43589_additional_1.map
AnnotationRaw, unsharpened map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map B

Fileemd_43589_half_map_1.map
AnnotationHalf map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map A

Fileemd_43589_half_map_2.map
AnnotationHalf map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Autographa californica multiple nucleopolyhedrovirus

EntireName: Autographa californica multiple nucleopolyhedrovirus
Components
  • Virus: Autographa californica multiple nucleopolyhedrovirus
    • Protein or peptide: Major capsid protein
    • Protein or peptide: Capsid-associated protein VP80
    • Protein or peptide: Occlusion-derived virus envelope protein E27
    • Protein or peptide: Protein C42
    • Protein or peptide: Protein AC109
    • Protein or peptide: Protein AC142
    • Protein or peptide: 38K (AC98)
  • Ligand: ZINC ION

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Supramolecule #1: Autographa californica multiple nucleopolyhedrovirus

SupramoleculeName: Autographa californica multiple nucleopolyhedrovirus / type: virus / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Details: Recombinant AcMNPV (BacToBac, Invitrogen) viruses containing the Bombyx mori cytoplasmic virus polyhedrin gene were amplified in Sf9 cells in suspension culture.
NCBI-ID: 307456
Sci species name: Autographa californica multiple nucleopolyhedrovirus
Virus type: VIRION / Virus isolate: SPECIES / Virus enveloped: Yes / Virus empty: No
Host (natural)Organism: Lepidoptera (butterflies and moths)
Virus shellShell ID: 1 / Name: Nucleocapsid / Diameter: 500.0 Å

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Macromolecule #1: Major capsid protein

MacromoleculeName: Major capsid protein / type: protein_or_peptide / ID: 1 / Number of copies: 12 / Enantiomer: LEVO
Source (natural)Organism: Autographa californica multiple nucleopolyhedrovirus
Molecular weightTheoretical: 38.991109 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MALVPVGMAP RQMRVNRCIF ASIVSFDACI TYKSPCSPDA YHDDGWFICN NHLIKRFKMS KMVLPIFDED DNQFKMTIAR HLVGNKERG IKRILIPSAT NYQDVFNLNS MMQAEQLIFH LIYNNENAVN TICDNLKYTE GFTSNTQRVI HSVYATTKSI L DTTNPNTF ...String:
MALVPVGMAP RQMRVNRCIF ASIVSFDACI TYKSPCSPDA YHDDGWFICN NHLIKRFKMS KMVLPIFDED DNQFKMTIAR HLVGNKERG IKRILIPSAT NYQDVFNLNS MMQAEQLIFH LIYNNENAVN TICDNLKYTE GFTSNTQRVI HSVYATTKSI L DTTNPNTF CSRVSRDELR FFDVTNARAL RGGAGDQLFN NYSGFLQNLI RRAVAPEYLQ IDTEELRFRN CATCIIDETG LV ASVPDGP ELYNPIRSSD IMRSQPNRLQ IRNVLKFEGD TRELDRTLSG YEEYPTYVPL FLGYQIINSE NNFLRNDFIP RAN PNATLG GGAVAGPAPG VAGEAGGGIA V

UniProtKB: Major capsid protein

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Macromolecule #2: Capsid-associated protein VP80

MacromoleculeName: Capsid-associated protein VP80 / type: protein_or_peptide / ID: 2 / Number of copies: 6 / Enantiomer: LEVO
Source (natural)Organism: Autographa californica multiple nucleopolyhedrovirus
Molecular weightTheoretical: 79.974469 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MNDSNSLLIT RLAAQILSRN MQTVDVIVDD KTLSLEEKID TLTSMVLAVN SPPQSPPRVT SSDLAASIIK NNSKMVGNDF EMRYNVLRM AVVFVKHYPK YYNETTAGLV AEIESNLLQY QNYVNQGNYQ NIEGYDSLLN KAEECYVKID RLFKESIKKI M DDTEAFER ...String:
MNDSNSLLIT RLAAQILSRN MQTVDVIVDD KTLSLEEKID TLTSMVLAVN SPPQSPPRVT SSDLAASIIK NNSKMVGNDF EMRYNVLRM AVVFVKHYPK YYNETTAGLV AEIESNLLQY QNYVNQGNYQ NIEGYDSLLN KAEECYVKID RLFKESIKKI M DDTEAFER EQEAERLRAE QTAANALLER RAQTSADDVV NRADANIPTA FSDPLPGPSA PRYMYESSES DTYMETARRT AE HYTDQDK DYNAAYTADE YNSLVKTVLL RLIEKALATL KNRLHITTID QLKKFRDYLN SDADAGEFQI FLNQEDCVIL KNL SNLASK FFNVRCVADT LEVMLEALRN NIELVQPESD AVRRIVIKMT QEIKDSSTPL YNIAMYKSDY DAIKNKNIKT LFDL YNDRL PINFLDTSAT SPVRKTSGKR SAEDDLLPTR SSKRANRPEI NVISSEDEQE DDDVEDVDYE KESKRRKLED EDFLK LKAL EFSKDIVNEK LQKIIVVTDG MKRLYEYCNC KNSLETLPSA ANYGSLLKRL NLYNLDHIEM NVNFYELLFP LTLYND NDN SDKTLSHQLV NYIFLASNYF QNCAKNFNYM RETFNVFGPF KQIDFMVMFV IKFNFLCDMR NFAKLIDELV PNKQPNM RI HSVLVMRDKI VKLAFSNLQF QTFSKKDKSR NTKHLQRLIM LMNANYNVI

UniProtKB: Capsid-associated protein VP80

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Macromolecule #3: Occlusion-derived virus envelope protein E27

MacromoleculeName: Occlusion-derived virus envelope protein E27 / type: protein_or_peptide / ID: 3 / Number of copies: 6 / Enantiomer: LEVO
Source (natural)Organism: Autographa californica multiple nucleopolyhedrovirus
Molecular weightTheoretical: 33.568152 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MKRIKCNKVR TVTEIVNSDE KIQKTYELAE FDLKNLSSLE SYETLKIKLA LSKYMAMLST LEMTQPLLEI FRNKADTRQI AAVVFSTLA FIHNRFHPLV TNFTNKMEFV VTETNDTSIP GEPILFTENE GVLLCSVDRP SIVKMLSREF DTEALVNFEN D NCNVRIAK ...String:
MKRIKCNKVR TVTEIVNSDE KIQKTYELAE FDLKNLSSLE SYETLKIKLA LSKYMAMLST LEMTQPLLEI FRNKADTRQI AAVVFSTLA FIHNRFHPLV TNFTNKMEFV VTETNDTSIP GEPILFTENE GVLLCSVDRP SIVKMLSREF DTEALVNFEN D NCNVRIAK TFGASKRKNT TRSDDYESNK QPNYDMDLSD FSITEVEATQ YLTLLLTVEH AYLHYYIFKN YGVFEYCKSL TD HSLFTNK LRSTMSTKTS NLLLSKFKFT IEDFDKINSN SVTSGFNIYN FNK

UniProtKB: Occlusion-derived virus envelope protein E27

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Macromolecule #4: Protein C42

MacromoleculeName: Protein C42 / type: protein_or_peptide / ID: 4 / Number of copies: 6 / Enantiomer: LEVO
Source (natural)Organism: Autographa californica multiple nucleopolyhedrovirus
Molecular weightTheoretical: 41.583594 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSAIALYLEI NKLRLKIDEP MQLAIWPQLF PLLCDEHQSV QLNTDVLINF MMHVARKSQN TILNNNAAIA SQYAAGNADV VAAPASAQP TPRPVINLFA RANAAAPAQP SEELINMRRY RNAARKLIHH YSLNSTSSTE YKISDVVMTM IFLLRSEKYH S LFKLLETT ...String:
MSAIALYLEI NKLRLKIDEP MQLAIWPQLF PLLCDEHQSV QLNTDVLINF MMHVARKSQN TILNNNAAIA SQYAAGNADV VAAPASAQP TPRPVINLFA RANAAAPAQP SEELINMRRY RNAARKLIHH YSLNSTSSTE YKISDVVMTM IFLLRSEKYH S LFKLLETT FDDYTCRPQM TQVQTDTLLD AVRSLLEMPS TTIDLTTVDI MRSSFARCFN SPIMRYAKIV LLQNVALQRD KR TTLEELL IERGEKIQML QPQQYINSGT EIPFCDDAEF LNRLLKHIDP YPLSRMYYNA ANTMFYTTME NYAVSNCKFN IED YNNIFK VMENIRKHSN KNSNDQDELN IYLGVQSSNA KRKKY

UniProtKB: Protein C42

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Macromolecule #5: Protein AC109

MacromoleculeName: Protein AC109 / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Autographa californica multiple nucleopolyhedrovirus
Molecular weightTheoretical: 44.851441 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MECPFQIQVC ISDRFFAFPH NLVEPQSDVG NKLIENLIVY VPTDDDRLYI DKKQFPKFNS VLVYRHEHDV NIDSRSPKKT ASATIVYWN PLVPITEIGA GETRVFSVLL TNNLFYCNTM IVHHENPKCP IEFTYPETDM QSACSALLKN RNGQSVPPPI K SNLRPIAC ...String:
MECPFQIQVC ISDRFFAFPH NLVEPQSDVG NKLIENLIVY VPTDDDRLYI DKKQFPKFNS VLVYRHEHDV NIDSRSPKKT ASATIVYWN PLVPITEIGA GETRVFSVLL TNNLFYCNTM IVHHENPKCP IEFTYPETDM QSACSALLKN RNGQSVPPPI K SNLRPIAC EIPLSHFKEL VESNDFLLCF NLETSTMVKI LSLKRIFCIF QYRKQPARYV INLPHEEIDN LYNKLNWERT RR LMKGDVP SNCATVNRSS LKYIKQAQSL LGIPDYSQTV VDFVKMFQKI IFPYQLVPNV IIKLNNFDQM VSSAPNKAEP YKK IRLFCK NDSIAISSSG IVPINMPDFS PPNTFDYSDY ANRTNINFVT QRVLTDGGFS SGITVTPVKY NYYL

UniProtKB: Protein AC109

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Macromolecule #6: Protein AC142

MacromoleculeName: Protein AC142 / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Autographa californica multiple nucleopolyhedrovirus
Molecular weightTheoretical: 55.480898 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSGGGNLLTL ERDHFKYLFL TSYFDLKDNE HVPSEPMAFI RNYLNCTFDL LDDAVLMNYF NYLQSMQLKH LVGSTSTNIF KFVKPQFRF VCDRTTVDIL EFDTRMYIKP GTPVYATNLF TSNPRKMMAF LYAEFGKVFK NKIFVNINNY GCVLAGSAGF L FDDAYVDW ...String:
MSGGGNLLTL ERDHFKYLFL TSYFDLKDNE HVPSEPMAFI RNYLNCTFDL LDDAVLMNYF NYLQSMQLKH LVGSTSTNIF KFVKPQFRF VCDRTTVDIL EFDTRMYIKP GTPVYATNLF TSNPRKMMAF LYAEFGKVFK NKIFVNINNY GCVLAGSAGF L FDDAYVDW NGVRMCAAPR LDNNMHPFRL YLLGEDMAKH FVDNNILPPH PSNAKTRKIN NSMFMLKNFY KGLPLFKSKY TV VNSTKIV TRKPNDIFNE IDKELNGNCP FIKFIQRDYI FDAQFPPDLL DLLNEYMTKS SIMKIITKFV IEENPAMSGE MSR EIILDR YSVDNYRKLY IKMEITNQFP VMYDHESSYI FVSKDFLQLK GTMNAFYAPK QRILSILAVN RLFGATETID FHPN LLVYR QSSPPVRLTG DVYVVDKNEK VFLVKHVFSN TVPAYLLIRG DYESSSDLKS LRDLNPWVQN TLLKLLIPDS VQ

UniProtKB: Protein AC142

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Macromolecule #7: 38K (AC98)

MacromoleculeName: 38K (AC98) / type: protein_or_peptide / ID: 7 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Autographa californica multiple nucleopolyhedrovirus
Molecular weightTheoretical: 38.0705 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MASSLQSKWI CLRLNDAIIK RHVLVLSEYA DLKYLGFEKY KFFEYVIFQF CNDPQLCKII ENNYNYCMQI FKAPADDMRD IRHNIKRAF KTPVLGHMCV LSNKPPMYSF LKEWFLLPHY KVVSLKSESL TWGFPHVVVF DLDSTLITEE EQVEIRDPFV Y DSLQELHE ...String:
MASSLQSKWI CLRLNDAIIK RHVLVLSEYA DLKYLGFEKY KFFEYVIFQF CNDPQLCKII ENNYNYCMQI FKAPADDMRD IRHNIKRAF KTPVLGHMCV LSNKPPMYSF LKEWFLLPHY KVVSLKSESL TWGFPHVVVF DLDSTLITEE EQVEIRDPFV Y DSLQELHE MGCVLVLWSY GSRDHVAHSM RDVDLEGYFD IIISEGSTVQ EERSDLVQNS HNAIVDYNLK KRFIENKFVF DI HNHRSDN NIPKSPKIVI KYLSDKNVNF FKSITLVDDL PTNNYAYDFY VKVKRCPTPV QDWEHYHNEI IQNIMDYEQY FIK

UniProtKB: Uncharacterized 38.0 kDa protein in P143-LEF5 intergenic region

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Macromolecule #8: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 8 / Number of copies: 12 / 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

BufferpH: 7.4 / Details: 10 mM HEPES pH 7.4, 500 mM potassium chloride
GridModel: Quantifoil R2/2 / Material: GOLD / Mesh: 400 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV
DetailsA suspension of AcMNPV viruses was purified from cell culture supernatant using sucrose gradient ultracentrifugation. Sucrose was removed after purification through dialysis.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 11439 / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.4000000000000001 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 64000
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 143933
Details: Particles were picked using a trained Topaz model, trained using manual picking of nucleocapsid ends from 700 micrographs
CTF correctionSoftware - Name: cryoSPARC (ver. 4.1.2) / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER / Details: Ab initio model
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 4.78 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 4.1.2) / Number images used: 53750
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.1.2)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.1.2)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelChain - Source name: AlphaFold / Chain - Initial model type: in silico model
Output model

PDB-8vwj:
The base complex of the AcMNPV baculovirus nucleocapsid (Class 2, localised reconstruction)

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