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- PDB-8ejl: Structure of HIV-1 capsid declination in complex with CPSF6-FG peptide -
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Open data
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Basic information
Entry | Database: PDB / ID: 8ejl | |||||||||
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Title | Structure of HIV-1 capsid declination in complex with CPSF6-FG peptide | |||||||||
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![]() | VIRAL PROTEIN / HIV-1 / capsid / declination / pentamer / hexamer | |||||||||
Function / homology | ![]() exon-exon junction complex binding / : / positive regulation of RNA export from nucleus / mRNA cleavage factor complex / interchromatin granule / Processing of Intronless Pre-mRNAs / perichromatin fibrils / mRNA cleavage and polyadenylation specificity factor complex / mRNA alternative polyadenylation / paraspeckles ...exon-exon junction complex binding / : / positive regulation of RNA export from nucleus / mRNA cleavage factor complex / interchromatin granule / Processing of Intronless Pre-mRNAs / perichromatin fibrils / mRNA cleavage and polyadenylation specificity factor complex / mRNA alternative polyadenylation / paraspeckles / mRNA 3'-end processing / mRNA 3'-end processing / Signaling by cytosolic FGFR1 fusion mutants / RNA Polymerase II Transcription Termination / protein heterotetramerization / viral budding via host ESCRT complex / ribosomal large subunit binding / Processing of Capped Intron-Containing Pre-mRNA / localization / Signaling by FGFR1 in disease / protein tetramerization / mRNA processing / ISG15 antiviral mechanism / host multivesicular body / viral nucleocapsid / nuclear speck / ribonucleoprotein complex / mRNA binding / host cell nucleus / host cell plasma membrane / virion membrane / structural molecule activity / RNA binding / zinc ion binding / nucleoplasm / membrane / nucleus / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
![]() | Pornillos, O. / Ganser-Pornillos, B.K. / Schirra, R.T. / dos Santos, N.F.B. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: A molecular switch modulates assembly and host factor binding of the HIV-1 capsid. Authors: Randall T Schirra / Nayara F B Dos Santos / Kaneil K Zadrozny / Iga Kucharska / Barbie K Ganser-Pornillos / Owen Pornillos / ![]() ![]() Abstract: The HIV-1 capsid is a fullerene cone made of quasi-equivalent hexamers and pentamers of the viral CA protein. Typically, quasi-equivalent assembly of viral capsid subunits is controlled by a ...The HIV-1 capsid is a fullerene cone made of quasi-equivalent hexamers and pentamers of the viral CA protein. Typically, quasi-equivalent assembly of viral capsid subunits is controlled by a molecular switch. Here, we identify a Thr-Val-Gly-Gly motif that modulates CA hexamer/pentamer switching by folding into a 3 helix in the pentamer and random coil in the hexamer. Manipulating the coil/helix configuration of the motif allowed us to control pentamer and hexamer formation in a predictable manner, thus proving its function as a molecular switch. Importantly, the switch also remodels the common binding site for host factors that are critical for viral replication and the new ultra-potent HIV-1 inhibitor lenacapavir. This study reveals that a critical assembly element also modulates the post-assembly and viral replication functions of the HIV-1 capsid and provides new insights on capsid function and inhibition. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 116 KB | Display | ![]() |
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PDB format | ![]() | 86.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
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Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 32.5 KB | Display | |
Data in CIF | ![]() | 46.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 28186MC ![]() 7urnC ![]() 7urtC ![]() 8eepC ![]() 8eetC C: citing same article ( M: map data used to model this data |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 | ![]()
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3 | ![]()
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Symmetry | Point symmetry: (Schoenflies symbol: C5 (5 fold cyclic)) |
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Components
#1: Protein | Mass: 25630.426 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #2: Protein/peptide | Mass: 1708.952 Da / Num. of mol.: 2 / Fragment: UNP residues 313-327 / Source method: obtained synthetically / Source: (synth.) ![]() |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Capsid-like particles of in vitro assembled HIV-1 CA protein in complex with CPSF6-FG peptide Type: COMPLEX Details: Capsids (0.27 mM CA) were incubated with peptide (3 mM) for 1 hour in ice Entity ID: all / Source: MULTIPLE SOURCES |
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Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Details of virus | Empty: YES / Enveloped: NO / Isolate: OTHER / Type: VIRUS-LIKE PARTICLE |
Buffer solution | pH: 6 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Instrument: HOMEMADE PLUNGER / Cryogen name: ETHANE / Details: Manual plunge-freezing |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 500 nm |
Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.20.1_4487: / Classification: refinement | ||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 166463 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER / Space: REAL | ||||||||||||||||||||||||||||||||||||
Atomic model building | 3D fitting-ID: 1 / Source name: PDB / Type: experimental model
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Refine LS restraints |
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