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- EMDB-12454: The cryoEM density map hexamer from PFO perforated VLPs in the pr... -

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Basic information

Entry
Database: EMDB / ID: EMD-12454
TitleThe cryoEM density map hexamer from PFO perforated VLPs in the presence of IP6/CypA
Map datamerged map low pass to 6 angstrom and b-factor -100
Sample
  • Virus: Human immunodeficiency virus 1
    • Protein or peptide: HIV-1 capsid
Function / homology
Function and homology information


integrase activity / Integration of viral DNA into host genomic DNA / Autointegration results in viral DNA circles / Minus-strand DNA synthesis / Plus-strand DNA synthesis / 2-LTR circle formation / Uncoating of the HIV Virion / Vpr-mediated nuclear import of PICs / Early Phase of HIV Life Cycle / Integration of provirus ...integrase activity / Integration of viral DNA into host genomic DNA / Autointegration results in viral DNA circles / Minus-strand DNA synthesis / Plus-strand DNA synthesis / 2-LTR circle formation / Uncoating of the HIV Virion / Vpr-mediated nuclear import of PICs / Early Phase of HIV Life Cycle / Integration of provirus / APOBEC3G mediated resistance to HIV-1 infection / Binding and entry of HIV virion / viral process / viral life cycle / HIV-1 retropepsin / symbiont-mediated activation of host apoptosis / Assembly Of The HIV Virion / retroviral ribonuclease H / exoribonuclease H / exoribonuclease H activity / Budding and maturation of HIV virion / host multivesicular body / protein processing / viral genome integration into host DNA / RNA-directed DNA polymerase / establishment of integrated proviral latency / symbiont-mediated suppression of host gene expression / viral penetration into host nucleus / RNA stem-loop binding / RNA-directed DNA polymerase activity / RNA-DNA hybrid ribonuclease activity / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / host cell / viral capsid / peptidase activity / viral nucleocapsid / DNA recombination / DNA-directed DNA polymerase / Hydrolases; Acting on ester bonds / aspartic-type endopeptidase activity / DNA-directed DNA polymerase activity / symbiont entry into host cell / viral translational frameshifting / lipid binding / host cell nucleus / host cell plasma membrane / structural molecule activity / virion membrane / DNA binding / zinc ion binding / identical protein binding / membrane
Similarity search - Function
: / gag protein p24 N-terminal domain / Reverse transcriptase connection / Reverse transcriptase connection domain / Reverse transcriptase thumb / Reverse transcriptase thumb domain / Integrase Zinc binding domain / Zinc finger integrase-type profile. / Integrase-like, N-terminal / Integrase DNA binding domain ...: / gag protein p24 N-terminal domain / Reverse transcriptase connection / Reverse transcriptase connection domain / Reverse transcriptase thumb / Reverse transcriptase thumb domain / Integrase Zinc binding domain / Zinc finger integrase-type profile. / Integrase-like, N-terminal / Integrase DNA binding domain / Integrase, C-terminal domain superfamily, retroviral / Integrase, N-terminal zinc-binding domain / Integrase, C-terminal, retroviral / Integrase DNA binding domain profile. / Immunodeficiency lentiviral matrix, N-terminal / gag gene protein p17 (matrix protein) / RNase H / Integrase core domain / Integrase, catalytic core / Integrase catalytic domain profile. / Retropepsin-like catalytic domain / RNase H type-1 domain profile. / Ribonuclease H domain / Matrix protein, lentiviral and alpha-retroviral, N-terminal / Retroviral nucleocapsid Gag protein p24, C-terminal domain / Gag protein p24 C-terminal domain / Reverse transcriptase domain / Reverse transcriptase (RT) catalytic domain profile. / Retropepsins / Retroviral aspartyl protease / Aspartyl protease, retroviral-type family profile. / Peptidase A2A, retrovirus, catalytic / Reverse transcriptase (RNA-dependent DNA polymerase) / Retroviral matrix protein / Retrovirus capsid, C-terminal / Retrovirus capsid, N-terminal / zinc finger / Zinc knuckle / Zinc finger, CCHC-type superfamily / Zinc finger, CCHC-type / Zinc finger CCHC-type profile. / Aspartic peptidase, active site / Eukaryotic and viral aspartyl proteases active site. / Ribonuclease H superfamily / Aspartic peptidase domain superfamily / Ribonuclease H-like superfamily / Reverse transcriptase/Diguanylate cyclase domain / DNA/RNA polymerase superfamily
Similarity search - Domain/homology
Gag-Pol polyprotein / Gag protein
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1
Methodsubtomogram averaging / cryo EM / Resolution: 6.2 Å
AuthorsNi T / Zhu Y / Yang Z / Xu C / Chaban Y / Nesterova T / Ning J / Bocking T / Parker WM / Monnie C ...Ni T / Zhu Y / Yang Z / Xu C / Chaban Y / Nesterova T / Ning J / Bocking T / Parker WM / Monnie C / Ahn J / Perilla RJ / Zhang P
Funding support United Kingdom, 3 items
OrganizationGrant numberCountry
Biotechnology and Biological Sciences Research Council (BBSRC)BB/S003339/1 United Kingdom
Wellcome Trust206422/Z/17/Z United Kingdom
Wellcome Trust203141/Z/16/Z United Kingdom
CitationJournal: Sci Adv / Year: 2021
Title: Structure of native HIV-1 cores and their interactions with IP6 and CypA.
Authors: Tao Ni / Yanan Zhu / Zhengyi Yang / Chaoyi Xu / Yuriy Chaban / Tanya Nesterova / Jiying Ning / Till Böcking / Michael W Parker / Christina Monnie / Jinwoo Ahn / Juan R Perilla / Peijun Zhang /
Abstract: The viral capsid plays essential roles in HIV replication and is a major platform engaging host factors. To overcome challenges in study native capsid structure, we used the perfringolysin O to ...The viral capsid plays essential roles in HIV replication and is a major platform engaging host factors. To overcome challenges in study native capsid structure, we used the perfringolysin O to perforate the membrane of HIV-1 particles, thus allowing host proteins and small molecules to access the native capsid while improving cryo–electron microscopy image quality. Using cryo–electron tomography and subtomogram averaging, we determined the structures of native capsomers in the presence and absence of inositol hexakisphosphate (IP6) and cyclophilin A and constructed an all-atom model of a complete HIV-1 capsid. Our structures reveal two IP6 binding sites and modes of cyclophilin A interactions. Free energy calculations substantiate the two binding sites at R18 and K25 and further show a prohibitive energy barrier for IP6 to pass through the pentamer. Our results demonstrate that perfringolysin O perforation is a valuable tool for structural analyses of enveloped virus capsids and interactions with host cell factors.
History
DepositionFeb 19, 2021-
Header (metadata) releaseJun 2, 2021-
Map releaseJun 2, 2021-
UpdateDec 1, 2021-
Current statusDec 1, 2021Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.26
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by height
  • Surface level: 0.26
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_12454.png

Downloads & links

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Map

FileDownload / File: emd_12454.map.gz / Format: CCP4 / Size: 107.2 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationmerged map low pass to 6 angstrom and b-factor -100
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 304 pix.
= 318.592 Å		1.05 Å/pix.
x 304 pix.
= 318.592 Å		1.05 Å/pix.
x 304 pix.
= 318.592 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.048 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.26 / Movie #1: 0.26
Minimum - Maximum-0.5282052 - 1.4747703
Average (Standard dev.)0.0030366662 (±0.05724459)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions304304304
Spacing304304304
CellA=B=C: 318.59198 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0481.0481.048
M x/y/z304304304
origin x/y/z0.0000.0000.000
length x/y/z318.592318.592318.592
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ384384384
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS304304304
D min/max/mean-0.5281.4750.003

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Supplemental data

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Half map: half2 raw map

Fileemd_12454_half_map_1.map
Annotationhalf2 raw map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half1 raw map

Fileemd_12454_half_map_2.map
Annotationhalf1 raw 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 : Human immunodeficiency virus 1

EntireName: Human immunodeficiency virus 1
Components
  • Virus: Human immunodeficiency virus 1
    • Protein or peptide: HIV-1 capsid

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Supramolecule #1: Human immunodeficiency virus 1

SupramoleculeName: Human immunodeficiency virus 1 / type: virus / ID: 1 / Parent: 0 / Macromolecule list: all / NCBI-ID: 11676 / Sci species name: Human immunodeficiency virus 1 / Virus type: VIRUS-LIKE PARTICLE / Virus isolate: SPECIES / Virus enveloped: No / Virus empty: Yes
Host systemOrganism: Homo sapiens (human)

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Macromolecule #1: HIV-1 capsid

MacromoleculeName: HIV-1 capsid / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
SequenceString: PIVQNLQGQM VHQAISPRTL NAWVKVVEEK AFSPEVIPMF SALSEGATPQ DLNTMLNTVG GHQAAMQMLK ETINEEAAEW DRLHPVHAGP IAPGQMREPR GSDIAGTTST LQEQIGWMTH NPPIPVGEIY KRWIILGLNK IVRMYSPTSI LDIRQGPKEP FRDYVDRFYK ...String:
PIVQNLQGQM VHQAISPRTL NAWVKVVEEK AFSPEVIPMF SALSEGATPQ DLNTMLNTVG GHQAAMQMLK ETINEEAAEW DRLHPVHAGP IAPGQMREPR GSDIAGTTST LQEQIGWMTH NPPIPVGEIY KRWIILGLNK IVRMYSPTSI LDIRQGPKEP FRDYVDRFYK TLRAEQASQE VKNWMTETLL VQNANPDCKT ILKALGPGAT LEEMMTACQG VGGPGHKARV L

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Experimental details

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Structure determination

Methodcryo EM
Processingsubtomogram averaging
Aggregation stateparticle

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Sample preparation

BufferpH: 7
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 3.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD
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

Final reconstructionApplied symmetry - Point group: C6 (6 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 6.2 Å / Resolution method: FSC 0.143 CUT-OFF / Number subtomograms used: 42255
ExtractionNumber tomograms: 101 / Number images used: 32114
Final angle assignmentType: ANGULAR RECONSTITUTION

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