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- PDB-6oz9: Ebola virus glycoprotein in complex with EBOV-520 Fab -

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Basic information

Entry
Database: PDB / ID: 6oz9
TitleEbola virus glycoprotein in complex with EBOV-520 Fab
Components
  • (EBOV-520 Fab ...) x 2
  • Envelope glycoprotein
  • Small secreted glycoprotein sGP
KeywordsVIRAL PROTEIN/Immune system / Glycoprotein / antibody / Fab / VIRAL PROTEIN / VIRAL PROTEIN-Immune system complex
Function / homology
Function and homology information


host cell endoplasmic reticulum / viral budding from plasma membrane / clathrin-dependent endocytosis of virus by host cell / suppression by virus of host tetherin activity / host cell cytoplasm / entry receptor-mediated virion attachment to host cell / symbiont entry into host cell / membrane raft / fusion of virus membrane with host endosome membrane / viral envelope ...host cell endoplasmic reticulum / viral budding from plasma membrane / clathrin-dependent endocytosis of virus by host cell / suppression by virus of host tetherin activity / host cell cytoplasm / entry receptor-mediated virion attachment to host cell / symbiont entry into host cell / membrane raft / fusion of virus membrane with host endosome membrane / viral envelope / lipid binding / host cell plasma membrane / virion membrane / extracellular region / identical protein binding / membrane
Similarity search - Function
Filoviruses glycoprotein, extracellular domain / Filoviruses glycoprotein / Filovirus glycoprotein / Immunoglobulins / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
Small secreted glycoprotein sGP / Envelope glycoprotein / Envelope glycoprotein
Similarity search - Component
Biological speciesEbola virus
Homo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 3.462 Å
AuthorsMilligan, J.C. / Altman, P.X. / Hui, S. / Hastie, K.M. / Gilchuk, P. / Crowe, J.E. / Saphire, E.O.
Funding support United States, 3items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)U19 109762 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI132204 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)5T32AI007354-27 United States
CitationJournal: Immunity / Year: 2020
Title: Analysis of a Therapeutic Antibody Cocktail Reveals Determinants for Cooperative and Broad Ebolavirus Neutralization.
Authors: Pavlo Gilchuk / Charles D Murin / Jacob C Milligan / Robert W Cross / Chad E Mire / Philipp A Ilinykh / Kai Huang / Natalia Kuzmina / Pilar X Altman / Sean Hui / Bronwyn M Gunn / Aubrey L ...Authors: Pavlo Gilchuk / Charles D Murin / Jacob C Milligan / Robert W Cross / Chad E Mire / Philipp A Ilinykh / Kai Huang / Natalia Kuzmina / Pilar X Altman / Sean Hui / Bronwyn M Gunn / Aubrey L Bryan / Edgar Davidson / Benjamin J Doranz / Hannah L Turner / Tanwee Alkutkar / Robin Flinko / Chiara Orlandi / Robert Carnahan / Rachel Nargi / Robin G Bombardi / Megan E Vodzak / Sheng Li / Adaora Okoli / Morris Ibeawuchi / Benjamin Ohiaeri / George K Lewis / Galit Alter / Alexander Bukreyev / Erica Ollmann Saphire / Thomas W Geisbert / Andrew B Ward / James E Crowe /
Abstract: Structural principles underlying the composition of protective antiviral monoclonal antibody (mAb) cocktails are poorly defined. Here, we exploited antibody cooperativity to develop a therapeutic mAb ...Structural principles underlying the composition of protective antiviral monoclonal antibody (mAb) cocktails are poorly defined. Here, we exploited antibody cooperativity to develop a therapeutic mAb cocktail against Ebola virus. We systematically analyzed the antibody repertoire in human survivors and identified a pair of potently neutralizing mAbs that cooperatively bound to the ebolavirus glycoprotein (GP). High-resolution structures revealed that in a two-antibody cocktail, molecular mimicry was a major feature of mAb-GP interactions. Broadly neutralizing mAb rEBOV-520 targeted a conserved epitope on the GP base region. mAb rEBOV-548 bound to a glycan cap epitope, possessed neutralizing and Fc-mediated effector function activities, and potentiated neutralization by rEBOV-520. Remodeling of the glycan cap structures by the cocktail enabled enhanced GP binding and virus neutralization. The cocktail demonstrated resistance to virus escape and protected non-human primates (NHPs) against Ebola virus disease. These data illuminate structural principles of antibody cooperativity with implications for development of antiviral immunotherapeutics.
History
DepositionMay 15, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 11, 2020Provider: repository / Type: Initial release
Revision 2.0Jul 29, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / 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 / 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.type_symbol / _chem_comp.name / _pdbx_struct_assembly_gen.asym_id_list / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_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

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Small secreted glycoprotein sGP
B: Envelope glycoprotein
L: EBOV-520 Fab light chain
H: EBOV-520 Fab heavy chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)78,0346
Polymers77,3564
Non-polymers6792
Water00
1
A: Small secreted glycoprotein sGP
B: Envelope glycoprotein
L: EBOV-520 Fab light chain
H: EBOV-520 Fab heavy chain
hetero molecules

A: Small secreted glycoprotein sGP
B: Envelope glycoprotein
L: EBOV-520 Fab light chain
H: EBOV-520 Fab heavy chain
hetero molecules

A: Small secreted glycoprotein sGP
B: Envelope glycoprotein
L: EBOV-520 Fab light chain
H: EBOV-520 Fab heavy chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)234,10318
Polymers232,06712
Non-polymers2,0366
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation5_555z,x,y1
crystal symmetry operation9_555y,z,x1
Unit cell
Length a, b, c (Å)217.970, 217.970, 217.970
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number213
Space group name H-MP4132

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Components

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Protein , 2 types, 2 molecules AB

#1: Protein Small secreted glycoprotein sGP


Mass: 17196.516 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Ebola virus
Gene: sGP, DF49_53415gpsGP, DF49_53416gpsGP, DF49_53417gpsGP, DF49_53418gpsGP, DF49_53419gpsGP, DF49_53420gpsGP, DF49_53421gpsGP, DF49_53422gpsGP, DF49_53423gpsGP, DF49_53424gpsGP, DF49_53425gpsGP, ...Gene: sGP, DF49_53415gpsGP, DF49_53416gpsGP, DF49_53417gpsGP, DF49_53418gpsGP, DF49_53419gpsGP, DF49_53420gpsGP, DF49_53421gpsGP, DF49_53422gpsGP, DF49_53423gpsGP, DF49_53424gpsGP, DF49_53425gpsGP, DF49_53426gpsGP, DH33_45401gpsGP, DH33_45402gpsGP
Variant: Mayinga / Cell line (production host): S2 / Production host: Drosophila melanogaster (fruit fly) / References: UniProt: A0A0E3H7K0, UniProt: Q05320*PLUS
#2: Protein Envelope glycoprotein


Mass: 12650.368 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Ebola virus / Gene: GP, DH33_45401gpGP / Variant: Mayinga / Cell line (production host): S2 / Production host: Drosophila melanogaster (fruit fly) / References: UniProt: A0A0E3H7K2, UniProt: Q05320*PLUS

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Antibody , 2 types, 2 molecules LH

#3: Antibody EBOV-520 Fab light chain


Mass: 23434.941 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)
#4: Antibody EBOV-520 Fab heavy chain


Mass: 24073.971 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Sugars / Non-polymers , 2 types, 2 molecules

#5: 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.: 1
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
#6: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C3H8O3

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 5.54 Å3/Da / Density % sol: 77.79 %
Crystal growTemperature: 295 K / Method: vapor diffusion, sitting drop / Details: 0.1 M HEPES pH 7.0 and 1.4 M Ammonium sulfate

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: APS / Beamline: 23-ID-D / Wavelength: 1 Å
DetectorType: DECTRIS PILATUS3 6M / Detector: PIXEL / Date: Jun 13, 2018
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 3.462→77.064 Å / Num. obs: 23638 / % possible obs: 99.19 % / Redundancy: 36.7 % / Net I/σ(I): 18.9
Reflection shellResolution: 3.462→3.586 Å / Num. unique obs: 2296

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Processing

Software
NameVersionClassification
PHENIX1.15rc1_3420refinement
MOSFLMdata reduction
Aimlessdata scaling
PHENIXphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 3.462→77.064 Å / SU ML: 0.35 / Cross valid method: FREE R-VALUE / σ(F): 0 / Phase error: 20.8 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.2345 1984 8.46 %
Rwork0.1991 --
obs0.2021 23452 99.21 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 3.462→77.064 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5402 0 6 0 5408
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0035540
X-RAY DIFFRACTIONf_angle_d0.5897554
X-RAY DIFFRACTIONf_dihedral_angle_d3.9643254
X-RAY DIFFRACTIONf_chiral_restr0.043855
X-RAY DIFFRACTIONf_plane_restr0.004973
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
3.4625-3.5490.26571320.26461440X-RAY DIFFRACTION97
3.549-3.6450.3181410.25611479X-RAY DIFFRACTION98
3.645-3.75230.27821360.23651489X-RAY DIFFRACTION98
3.7523-3.87340.27091380.22321505X-RAY DIFFRACTION99
3.8734-4.01180.25261380.22531502X-RAY DIFFRACTION99
4.0118-4.17240.22921380.19451494X-RAY DIFFRACTION99
4.1724-4.36230.20231440.17731543X-RAY DIFFRACTION100
4.3623-4.59230.20081400.15961510X-RAY DIFFRACTION100
4.5923-4.87990.21241410.16251532X-RAY DIFFRACTION100
4.8799-5.25660.19091430.16671538X-RAY DIFFRACTION100
5.2566-5.78550.20861430.18281553X-RAY DIFFRACTION100
5.7855-6.62220.2251460.19971569X-RAY DIFFRACTION100
6.6222-8.34170.24711470.20191601X-RAY DIFFRACTION100
8.3417-77.08310.25141570.21471713X-RAY DIFFRACTION100
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
10.5577-0.13790.26510.32270.17770.3386-0.1218-0.0455-0.09240.23480.12610.24470.0518-0.4431-0.00010.7794-0.05380.05990.7939-0.0230.6387-1.6204-3.7838-24.297
20.7390.0952-0.16650.4926-0.56210.57380.14020.05080.1571-0.1512-0.1018-0.31030.00810.00860.00010.7583-0.03050.05470.7832-0.03320.709114.797615.5799-11.7241
30.95750.875-0.62130.7645-0.56980.3856-0.09510.006-0.00560.1835-0.0252-0.10360.02060.11320.00010.598-0.0428-0.02020.58260.00210.619613.19839.8395-11.9006
40.7440.9265-0.03011.0732-0.00850.5097-0.23450.37060.00320.27560.2032-0.06160.06660.277200.63160.04110.14050.83130.07370.849315.6297-6.3346-15.653
50.33320.4990.11040.63520.29390.45730.0269-0.17490.2056-0.2137-0.0970.0272-0.227-0.0757-0.00010.51950.0225-0.03630.50890.0380.5735-4.5358-3.6131-20.2286
60.5370.15990.11430.9696-0.95591.0443-0.0020.1592-0.0239-0.099-0.1083-0.0347-0.1664-0.103200.6352-0.01030.10880.64290.03330.684426.947511.3589-47.6862
71.33510.54560.3941.548-0.59750.4342-0.23060.21260.3662-0.35150.0183-0.1167-0.01260.1482-0.00010.66520.08920.26540.9795-0.02520.696159.77049.2846-63.1566
80.0847-0.11190.16270.1402-0.20930.2945-0.028-0.2883-0.38150.36090.107-0.2642-0.38680.41420.00021.08180.06740.08810.82570.00960.960742.5327-8.8184-37.882
90.77670.33280.52420.9115-0.21570.5736-0.1739-0.16490.0165-0.15510.0093-0.61750.1603-0.3762-0.00041.01390.14290.24730.64990.01640.674532.6512-4.1187-36.5044
100.66240.6098-0.07960.58460.1220.5098-0.0215-0.1549-0.36560.4757-0.01330.04610.7027-0.1177-0.00011.03250.07810.13450.61370.0490.710930.2235-5.8518-35.9416
110.0696-0.02430.1880.1161-0.13740.56310.23360.3738-0.25160.5661-0.37570.23430.0963-0.11440.00030.81680.28820.10330.7287-0.0680.979744.5762-6.2495-43.2322
120.11160.0209-0.11250.09850.13130.28760.3456-0.2929-0.812-0.8718-0.6710.30010.71890.42880.00070.9383-0.19920.07611.56330.41431.830666.32545.9647-52.5586
130.1641-0.1291-0.05060.4205-0.27610.3082-0.0891-0.3893-0.20970.4073-0.00110.13660.14931.26350.00021.22890.12280.09771.3199-0.08361.372756.97953.7396-49.3004
140.1618-0.3502-0.46320.76440.98851.278-0.8103-0.99940.48120.43560.3685-0.1511.56440.9537-0.01631.2336-0.2693-0.14211.64090.20781.750264.11386.0244-42.3253
150.00050.01550.00620.03290.03770.06030.5728-1.07150.66580.3160.8048-0.42140.52-0.13130.00161.464-0.03-0.22971.61930.24782.070969.97075.3044-44.2003
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection details
1X-RAY DIFFRACTION1chain 'A' and (resid 31 through 73 )
2X-RAY DIFFRACTION2chain 'A' and (resid 74 through 124 )
3X-RAY DIFFRACTION3chain 'A' and (resid 125 through 188 )
4X-RAY DIFFRACTION4chain 'B' and (resid 503 through 543 )
5X-RAY DIFFRACTION5chain 'B' and (resid 544 through 615 )
6X-RAY DIFFRACTION6chain 'L' and (resid 1 through 102 )
7X-RAY DIFFRACTION7chain 'L' and (resid 103 through 214 )
8X-RAY DIFFRACTION8chain 'H' and (resid 1 through 17 )
9X-RAY DIFFRACTION9chain 'H' and (resid 18 through 52 )
10X-RAY DIFFRACTION10chain 'H' and (resid 53 through 110 )
11X-RAY DIFFRACTION11chain 'H' and (resid 111 through 130 )
12X-RAY DIFFRACTION12chain 'H' and (resid 131 through 156 )
13X-RAY DIFFRACTION13chain 'H' and (resid 157 through 196 )
14X-RAY DIFFRACTION14chain 'H' and (resid 197 through 215 )
15X-RAY DIFFRACTION15chain 'H' and (resid 216 through 226 )

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