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- PDB-6edu: B41 SOSIP.664 in complex with soluble CD4 (D1-D2), the co-recepto... -

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Basic information

Entry
Database: PDB / ID: 6edu
TitleB41 SOSIP.664 in complex with soluble CD4 (D1-D2), the co-receptor mimicking antibody 21c and the broadly neutralizing antibody 8ANC195
Components
  • (8ANC195 G52K5 Fab ...) x 2
  • (Envelope glycoprotein ...) x 2
  • 21c Fab VH domain
  • 21c Fab VL domain
  • T-cell surface glycoprotein CD4
KeywordsIMMUNE SYSTEM / HIV-1 Env / broadly neutralizing antibodies / cryo-EM / single particle analysis / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / cellular response to granulocyte macrophage colony-stimulating factor stimulus / interleukin-15-mediated signaling pathway / positive regulation of monocyte differentiation / Nef Mediated CD4 Down-regulation ...helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / cellular response to granulocyte macrophage colony-stimulating factor stimulus / interleukin-15-mediated signaling pathway / positive regulation of monocyte differentiation / Nef Mediated CD4 Down-regulation / Alpha-defensins / positive regulation of kinase activity / regulation of T cell activation / T cell receptor complex / extracellular matrix structural constituent / Other interleukin signaling / enzyme-linked receptor protein signaling pathway / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / regulation of calcium ion transport / macrophage differentiation / Generation of second messenger molecules / T cell differentiation / PD-1 signaling / positive regulation of protein kinase activity / Binding and entry of HIV virion / coreceptor activity / positive regulation of calcium-mediated signaling / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / protein tyrosine kinase binding / positive regulation of establishment of T cell polarity / positive regulation of interleukin-2 production / virus-mediated perturbation of host defense response / T cell activation / host cell endosome membrane / Vpu mediated degradation of CD4 / calcium-mediated signaling / clathrin-coated endocytic vesicle membrane / cell surface receptor protein tyrosine kinase signaling pathway / positive regulation of T cell activation / positive regulation of peptidyl-tyrosine phosphorylation / transmembrane signaling receptor activity / Cargo recognition for clathrin-mediated endocytosis / Downstream TCR signaling / virus receptor activity / signaling receptor activity / Clathrin-mediated endocytosis / MHC class II protein complex binding / clathrin-dependent endocytosis of virus by host cell / positive regulation of canonical NF-kappaB signal transduction / defense response to Gram-negative bacterium / adaptive immune response / positive regulation of MAPK cascade / positive regulation of viral entry into host cell / positive regulation of ERK1 and ERK2 cascade / cell surface receptor signaling pathway / viral protein processing / early endosome / cell adhesion / immune response / positive regulation of protein phosphorylation / membrane raft / fusion of virus membrane with host plasma membrane / endoplasmic reticulum lumen / external side of plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / lipid binding / structural molecule activity / virion attachment to host cell / endoplasmic reticulum membrane / protein kinase binding / host cell plasma membrane / virion membrane / positive regulation of DNA-templated transcription / enzyme binding / signal transduction / protein homodimerization activity / zinc ion binding / identical protein binding / plasma membrane
Similarity search - Function
CD4, extracellular / T cell CD4 receptor C-terminal region / CD4, extracellular / T cell CD4 receptor C terminal region / T-cell surface antigen CD4 / Immunoglobulin C2-set / Immunoglobulin C2-set domain / Immunoglobulin / Immunoglobulin domain / Envelope glycoprotein Gp160 ...CD4, extracellular / T cell CD4 receptor C-terminal region / CD4, extracellular / T cell CD4 receptor C terminal region / T-cell surface antigen CD4 / Immunoglobulin C2-set / Immunoglobulin C2-set domain / Immunoglobulin / Immunoglobulin domain / Envelope glycoprotein Gp160 / Retroviral envelope protein / Retroviral envelope protein GP41-like / Gp120 core superfamily / Envelope glycoprotein GP120 / Human immunodeficiency virus 1, envelope glycoprotein Gp120 / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
Envelope glycoprotein gp160 / Envelope glycoprotein gp160 / T-cell surface glycoprotein CD4
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.06 Å
AuthorsBarnes, C.O. / Bjorkman, P.J.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)P50 GM082545-06 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)P01 AI100148 United States
CitationJournal: Cell Host Microbe / Year: 2018
Title: Partially Open HIV-1 Envelope Structures Exhibit Conformational Changes Relevant for Coreceptor Binding and Fusion.
Authors: Haoqing Wang / Christopher O Barnes / Zhi Yang / Michel C Nussenzweig / Pamela J Bjorkman /
Abstract: HIV-1 Env, a trimer of gp120-gp41 heterodimers, mediates membrane fusion after binding host receptor CD4. Receptor binding displaces V1V2 loops from Env's apex, allowing coreceptor binding and ...HIV-1 Env, a trimer of gp120-gp41 heterodimers, mediates membrane fusion after binding host receptor CD4. Receptor binding displaces V1V2 loops from Env's apex, allowing coreceptor binding and opening Env to enable gp41-mediated fusion. We present 3.54 Å and 4.06 Å cryoelectron microscopy structures of partially open soluble native-like Env trimers (SOSIPs) bound to CD4. One structure, a complex with a coreceptor-mimicking antibody that binds both CD4 and gp120, stabilizes the displaced V1V2 and reveals its structure. Comparing partially and fully open Envs with closed Envs shows that gp41 rearrangements are independent of the CD4-induced rearrangements that result in V1V2 displacement and formation of a 4-stranded bridging sheet. These findings suggest ordered conformational changes before coreceptor binding: (1) gp120 opening inducing side-chain rearrangements and a compact gp41 central helix conformation, and (2) 4-stranded bridging-sheet formation and V1V2 displacement. These analyses illuminate potential receptor-induced Env changes and inform design of therapeutics disrupting viral entry.
History
DepositionAug 11, 2018Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 17, 2018Provider: repository / Type: Initial release
Revision 1.1Oct 24, 2018Group: Data collection / Database references
Category: citation / citation_author / pdbx_database_related
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _pdbx_database_related.content_type
Revision 1.2Dec 18, 2019Group: Author supporting evidence / Other / Category: atom_sites / cell / pdbx_audit_support
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 / _cell.length_a / _cell.length_b / _cell.length_c / _pdbx_audit_support.funding_organization
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / em_entity_assembly / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_close_contact / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.occupancy / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _em_entity_assembly.entity_id_list / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_2 / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation

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Structure visualization

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Assembly

Deposited unit
A: Envelope glycoprotein gp160
B: Envelope glycoprotein gp160
C: Envelope glycoprotein gp160
D: Envelope glycoprotein gp160
E: Envelope glycoprotein gp160
F: Envelope glycoprotein gp160
G: T-cell surface glycoprotein CD4
H: T-cell surface glycoprotein CD4
I: T-cell surface glycoprotein CD4
J: 21c Fab VH domain
K: 21c Fab VL domain
L: 21c Fab VH domain
M: 21c Fab VL domain
N: 21c Fab VH domain
O: 21c Fab VL domain
P: 8ANC195 G52K5 Fab VH domain
Q: 8ANC195 G52K5 Fab VL domain
R: 8ANC195 G52K5 Fab VH domain
S: 8ANC195 G52K5 Fab VL domain
T: 8ANC195 G52K5 Fab VH domain
U: 8ANC195 G52K5 Fab VL domain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)601,81875
Polymers577,57721
Non-polymers24,24154
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area85940 Å2
ΔGint189 kcal/mol
Surface area145590 Å2

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Components

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Envelope glycoprotein ... , 2 types, 6 molecules ABCDEF

#1: Protein Envelope glycoprotein gp160


Mass: 17357.824 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): CHO / Production host: Cricetulus griseus (Chinese hamster) / Variant (production host): K1 / References: UniProt: B3UEZ6
#2: Protein Envelope glycoprotein gp160


Mass: 57702.469 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): CHO / Production host: Cricetulus griseus (Chinese hamster) / Variant (production host): K1 / References: UniProt: B3UES2

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Protein , 1 types, 3 molecules GHI

#3: Protein T-cell surface glycoprotein CD4 / T-cell surface antigen T4/Leu-3


Mass: 20503.260 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD4 / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: P01730

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Antibody , 4 types, 12 molecules JLNKMOPRTQSU

#4: Antibody 21c Fab VH domain


Mass: 24619.590 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
#5: Antibody 21c Fab VL domain


Mass: 22815.264 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
#6: Antibody 8ANC195 G52K5 Fab VH domain


Mass: 26125.270 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
#7: Antibody 8ANC195 G52K5 Fab VL domain


Mass: 23401.984 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)

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Sugars , 6 types, 54 molecules

#8: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 15
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#9: Polysaccharide alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 910.823 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-2DManpa1-3DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3/a4-b1_b4-c1_c3-d1_d2-e1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{[(2+1)][a-D-Manp]{}}}}}}LINUCSPDB-CARE
#10: Polysaccharide alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 910.823 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,5,4/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3/a4-b1_b4-c1_c3-d1_c6-e1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#11: Polysaccharide beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}}LINUCSPDB-CARE
#12: Polysaccharide alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1559.386 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-2DManpa1-2DManpa1-3[DManpa1-3[DManpa1-6]DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,9,8/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3-3-3-3-3/a4-b1_b4-c1_c3-d1_c6-g1_d2-e1_e2-f1_g3-h1_g6-i1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{[(2+1)][a-D-Manp]{[(2+1)][a-D-Manp]{}}}[(6+1)][a-D-Manp]{[(3+1)][a-D-Manp]{}[(6+1)][a-D-Manp]{}}}}}}LINUCSPDB-CARE
#13: Sugar...
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 27
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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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: B41 SOSIP-sCD4-21c-8ANC195 complex / Type: COMPLEX / Entity ID: #1-#7 / Source: RECOMBINANT
Molecular weightValue: 0.7 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
120 mMTrisTris1
2125 mMSodium ChlorideNaClSodium chloride1
SpecimenConc.: 0.35 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: 0.26 mA / Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 293 K

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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 FIELDBright-field microscopy / Nominal defocus max: 3000 nm / Nominal defocus min: 1700 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 10 sec. / Electron dose: 60 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2531
Image scansMovie frames/image: 50

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Processing

SoftwareName: PHENIX / Version: 1.14_3219: / Classification: refinement
EM software
IDNameVersionCategoryDetails
2SerialEMimage acquisition
4CTFFIND4.1CTF correctionPerformed CTF correction on movies
7UCSF Chimera1.11model fitting
11RELION2.1classification
12RELION2.13D reconstruction
13PHENIX1.13model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 4.06 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 305469 / Num. of class averages: 4 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL / Target criteria: Correlation coefficient
RefinementHighest resolution: 4.06 Å
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0127005
ELECTRON MICROSCOPYf_angle_d1.327836936
ELECTRON MICROSCOPYf_chiral_restr0.06724515
ELECTRON MICROSCOPYf_plane_restr0.00874512
ELECTRON MICROSCOPYf_dihedral_angle_d7.773815726

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