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- PDB-6bp7: Recombinant major vault protein [Rattus norvegicus] structure in ... -

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Basic information

Entry
Database: PDB / ID: 6bp7
TitleRecombinant major vault protein [Rattus norvegicus] structure in solution: conformation 2
ComponentsMajor vault protein
KeywordsSTRUCTURAL PROTEIN / Vault Recombinant protein structure Engineered nano-particle
Function / homology
Function and homology information


protein activation cascade / ERBB signaling pathway / Neutrophil degranulation / negative regulation of epidermal growth factor receptor signaling pathway / protein phosphatase binding / cytoskeleton / cell population proliferation / ribonucleoprotein complex / protein kinase binding / perinuclear region of cytoplasm ...protein activation cascade / ERBB signaling pathway / Neutrophil degranulation / negative regulation of epidermal growth factor receptor signaling pathway / protein phosphatase binding / cytoskeleton / cell population proliferation / ribonucleoprotein complex / protein kinase binding / perinuclear region of cytoplasm / identical protein binding / nucleus / cytoplasm
Similarity search - Function
Major vault protein, N-terminal / Major vault protein, shoulder domain / Major vault protein / Major vault protein repeat domain 3 / Major vault protein repeat domain 2 / Major vault protein repeat domain 4 / Major vault protein repeat domain / Major vault protein repeat domain superfamily / Major vault protein repeat domain 2 superfamily / Major Vault Protein repeat domain ...Major vault protein, N-terminal / Major vault protein, shoulder domain / Major vault protein / Major vault protein repeat domain 3 / Major vault protein repeat domain 2 / Major vault protein repeat domain 4 / Major vault protein repeat domain / Major vault protein repeat domain superfamily / Major vault protein repeat domain 2 superfamily / Major Vault Protein repeat domain / Shoulder domain / Major Vault Protein repeat domain / Major Vault Protein Repeat domain / Major Vault Protein repeat domain / MVP (vault) repeat profile. / Band 7/SPFH domain superfamily
Similarity search - Domain/homology
Biological speciesRattus norvegicus (Norway rat)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.9 Å
AuthorsDing, K. / Zhang, X. / Mrazek, J. / Kickhoefer, V.A. / Lai, M. / Ng, H.L. / Yang, O.O. / Rome, L.H. / Zhou, Z.H.
Funding support United States, 9items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM071940 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI094386 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI043203 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI106528 United States
National Institutes of Health/National Institute of Dental and Craniofacial Research (NIH/NIDCR)DE025567 United States
National Institutes of Health/National Center for Research Resources (NIH/NCRR)1S10RR23057 United States
National Institutes of Health/Office of the Director1S10OD018111 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)U24GM116792 United States
National Science Foundation (NSF, United States)DBI-338135 United States
CitationJournal: Structure / Year: 2018
Title: Solution Structures of Engineered Vault Particles.
Authors: Ke Ding / Xing Zhang / Jan Mrazek / Valerie A Kickhoefer / Mason Lai / Hwee L Ng / Otto O Yang / Leonard H Rome / Z Hong Zhou /
Abstract: Prior crystal structures of the vault have provided clues of its structural variability but are non-conclusive due to crystal packing. Here, we obtained vaults by engineering at the N terminus of rat ...Prior crystal structures of the vault have provided clues of its structural variability but are non-conclusive due to crystal packing. Here, we obtained vaults by engineering at the N terminus of rat major vault protein (MVP) an HIV-1 Gag protein segment and determined their near-atomic resolution (∼4.8 Å) structures in a solution/non-crystalline environment. The barrel-shaped vaults in solution adopt two conformations, 1 and 2, both with D39 symmetry. From the N to C termini, each MVP monomer has three regions: body, shoulder, and cap. While conformation 1 is identical to one of the crystal structures, the shoulder in conformation 2 is translocated longitudinally up to 10 Å, resulting in an outward-projected cap. Our structures clarify the structural discrepancies in the body region in the prior crystallography models. The vault's drug-delivery potential is highlighted by the internal disposition and structural flexibility of its Gag-loaded N-terminal extension at the barrel waist of the engineered vault.
History
DepositionNov 22, 2017Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 4, 2018Provider: repository / Type: Initial release
Revision 1.1Apr 11, 2018Group: Data collection / Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 1.2Feb 20, 2019Group: Author supporting evidence / Data collection / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.3Nov 27, 2019Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.4Dec 18, 2019Group: Other / Category: atom_sites / cell
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _cell.Z_PDB
Revision 1.5Mar 13, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_oper_list
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_oper_list.name / _pdbx_struct_oper_list.symmetry_operation / _pdbx_struct_oper_list.type

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Structure visualization

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Assembly

Deposited unit
A: Major vault protein


Theoretical massNumber of molelcules
Total (without water)103,9311
Polymers103,9311
Non-polymers00
Water00
1
A: Major vault protein
x 78


Theoretical massNumber of molelcules
Total (without water)8,106,64278
Polymers8,106,64278
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation77
2


  • Idetical with deposited unit
  • point asymmetric unit
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3


  • Idetical with deposited unit in distinct coordinate
  • point asymmetric unit, std point frame
TypeNameSymmetry operationNumber
transform to point frame1
SymmetryPoint symmetry: (Schoenflies symbol: D39 (2x39 fold dihedral))

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Components

#1: Protein Major vault protein / MVP


Mass: 103931.305 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Mvp / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: Q62667

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Major vault protein [Rattus norvegicus] / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Rattus norvegicus (Norway rat)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 32 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 9669 / Symmetry type: POINT
RefinementHighest resolution: 4.9 Å

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