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Open data
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Basic information
Entry | Database: PDB / ID: 6gza | ||||||||||||||||||||||||
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Title | Structure of murine leukemia virus capsid C-terminal domain | ||||||||||||||||||||||||
![]() | Capsid protein | ||||||||||||||||||||||||
![]() | VIRAL PROTEIN / capsid / dimer / cobalt | ||||||||||||||||||||||||
Function / homology | ![]() retroviral 3' processing activity / host cell late endosome membrane / DNA catabolic process / Hydrolases; Acting on peptide bonds (peptidases); Aspartic endopeptidases / ribonuclease H / virion assembly / protein-DNA complex / host multivesicular body / viral genome integration into host DNA / RNA-directed DNA polymerase ...retroviral 3' processing activity / host cell late endosome membrane / DNA catabolic process / Hydrolases; Acting on peptide bonds (peptidases); Aspartic endopeptidases / ribonuclease H / virion assembly / protein-DNA complex / host multivesicular body / viral genome integration into host DNA / RNA-directed DNA polymerase / establishment of integrated proviral latency / RNA-directed DNA polymerase activity / RNA-DNA hybrid ribonuclease activity / Transferases; Transferring phosphorus-containing groups; Nucleotidyltransferases / symbiont-mediated suppression of host gene expression / viral nucleocapsid / DNA recombination / nucleic acid binding / structural constituent of virion / DNA-directed DNA polymerase / Hydrolases; Acting on ester bonds / aspartic-type endopeptidase activity / DNA-directed DNA polymerase activity / symbiont entry into host cell / host cell plasma membrane / proteolysis / DNA binding / RNA binding / zinc ion binding / membrane Similarity search - Function | ||||||||||||||||||||||||
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Method | ![]() ![]() | ||||||||||||||||||||||||
![]() | Qu, K. / Dolezal, M. / Schur, F.K.M. / Murciano, B. / Rumlova, M. / Ruml, T. / Briggs, J.A.G. | ||||||||||||||||||||||||
Funding support | ![]() ![]() ![]()
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![]() | ![]() Title: Structure and architecture of immature and mature murine leukemia virus capsids. Authors: Kun Qu / Bärbel Glass / Michal Doležal / Florian K M Schur / Brice Murciano / Alan Rein / Michaela Rumlová / Tomáš Ruml / Hans-Georg Kräusslich / John A G Briggs / ![]() ![]() ![]() ![]() ![]() Abstract: Retroviruses assemble and bud from infected cells in an immature form and require proteolytic maturation for infectivity. The CA (capsid) domains of the Gag polyproteins assemble a protein lattice as ...Retroviruses assemble and bud from infected cells in an immature form and require proteolytic maturation for infectivity. The CA (capsid) domains of the Gag polyproteins assemble a protein lattice as a truncated sphere in the immature virion. Proteolytic cleavage of Gag induces dramatic structural rearrangements; a subset of cleaved CA subsequently assembles into the mature core, whose architecture varies among retroviruses. Murine leukemia virus (MLV) is the prototypical γ-retrovirus and serves as the basis of retroviral vectors, but the structure of the MLV CA layer is unknown. Here we have combined X-ray crystallography with cryoelectron tomography to determine the structures of immature and mature MLV CA layers within authentic viral particles. This reveals the structural changes associated with maturation, and, by comparison with HIV-1, uncovers conserved and variable features. In contrast to HIV-1, most MLV CA is used for assembly of the mature core, which adopts variable, multilayered morphologies and does not form a closed structure. Unlike in HIV-1, there is similarity between protein-protein interfaces in the immature MLV CA layer and those in the mature CA layer, and structural maturation of MLV could be achieved through domain rotations that largely maintain hexameric interactions. Nevertheless, the dramatic architectural change on maturation indicates that extensive disassembly and reassembly are required for mature core growth. The core morphology suggests that wrapping of the genome in CA sheets may be sufficient to protect the MLV ribonucleoprotein during cell entry. | ||||||||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 87.8 KB | Display | ![]() |
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PDB format | ![]() | 66.6 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 414.1 KB | Display | ![]() |
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Full document | ![]() | 414.8 KB | Display | |
Data in XML | ![]() | 10.2 KB | Display | |
Data in CIF | ![]() | 14 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 0290C ![]() 0291C ![]() 0292C ![]() 0293C ![]() 4419C ![]() 4421C ![]() 4422C ![]() 6hwiC ![]() 6hwwC ![]() 6hwxC ![]() 6hwyC C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 9912.125 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Production host: ![]() ![]() References: UniProt: A0A220A2R8, UniProt: P03355*PLUS #2: Chemical | ChemComp-CO / | #3: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.84 Å3/Da / Density % sol: 56.76 % |
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Crystal grow | Temperature: 293.15 K / Method: vapor diffusion, sitting drop Details: 37 mg/ml protein, 4% PEG 3350, 0.1 M HEPES pH 8.2, 5 mM CoCl2, 5 mM CdCl2, 5 mM MgCl2 and 5 mM NiCl2 |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() |
Detector | Type: MAR scanner 345 mm plate / Detector: IMAGE PLATE / Date: Aug 14, 2015 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.5418 Å / Relative weight: 1 |
Reflection | Resolution: 1.89→35.6 Å / Num. obs: 39681 / % possible obs: 100 % / Redundancy: 10.2 % / Net I/σ(I): 18.9 |
Reflection shell | Resolution: 1.89→1.99 Å |
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Processing
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Refinement | Method to determine structure: ![]()
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.89→35.599 Å
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Refine LS restraints |
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LS refinement shell |
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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