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- EMDB-27418: Cryo-EM Structure of HPIV3 prefusion F trimer in complex with 3x1 Fab -
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Open data
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Basic information
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Title | Cryo-EM Structure of HPIV3 prefusion F trimer in complex with 3x1 Fab | |||||||||
![]() | Sharpened map to 3.6A | |||||||||
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Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.62 Å | |||||||||
![]() | Rodarte JV / Pancera M | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Cross-protective antibodies against common endemic respiratory viruses. Authors: Madelyn Cabán / Justas V Rodarte / Madeleine Bibby / Matthew D Gray / Justin J Taylor / Marie Pancera / Jim Boonyaratanakornkit / ![]() Abstract: Respiratory syncytial virus (RSV), human metapneumovirus (HMPV), and human parainfluenza virus types one (HPIV1) and three (HPIV3) can cause severe disease and death in immunocompromised patients, ...Respiratory syncytial virus (RSV), human metapneumovirus (HMPV), and human parainfluenza virus types one (HPIV1) and three (HPIV3) can cause severe disease and death in immunocompromised patients, the elderly, and those with underlying lung disease. A protective monoclonal antibody exists for RSV, but clinical use is limited to high-risk infant populations. Hence, therapeutic options for these viruses in vulnerable patient populations are currently limited. Here, we present the discovery, in vitro characterization, and in vivo efficacy testing of two cross-neutralizing monoclonal antibodies, one targeting both HPIV3 and HPIV1 and the other targeting both RSV and HMPV. The 3 × 1 antibody is capable of targeting multiple parainfluenza viruses; the MxR antibody shares features with other previously reported monoclonal antibodies that are capable of neutralizing both RSV and HMPV. We obtained structures using cryo-electron microscopy of these antibodies in complex with their antigens at 3.62 Å resolution for 3 × 1 bound to HPIV3 and at 2.24 Å for MxR bound to RSV, providing a structural basis for in vitro binding and neutralization. Together, a cocktail of 3 × 1 and MxR could have clinical utility in providing broad protection against four of the respiratory viruses that cause significant morbidity and mortality in at-risk individuals. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 118 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 17.3 KB 17.3 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 10.6 KB | Display | ![]() |
Images | ![]() | 66.1 KB | ||
Masks | ![]() | 125 MB | ![]() | |
Others | ![]() ![]() | 115.9 MB 116 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
EMDB pages | ![]() ![]() |
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Map
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Annotation | Sharpened map to 3.6A | ||||||||||||||||||||
Voxel size | X=Y=Z: 1.02885 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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Projections & Slices |
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Density Histograms |
-Half map: Halfmap A
File | emd_27418_half_map_1.map | ||||||||||||
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Annotation | Halfmap A | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Halfmap B
File | emd_27418_half_map_2.map | ||||||||||||
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Annotation | Halfmap B | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Complex of one 3x1 Fab bound to the HPIV3 preF trimer
Entire | Name: Complex of one 3x1 Fab bound to the HPIV3 preF trimer |
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Components |
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-Supramolecule #1: Complex of one 3x1 Fab bound to the HPIV3 preF trimer
Supramolecule | Name: Complex of one 3x1 Fab bound to the HPIV3 preF trimer / type: complex / ID: 1 / Chimera: Yes / Parent: 0 / Macromolecule list: #1-#3 |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 339 KDa |
-Macromolecule #1: Fusion glycoprotein F0
Macromolecule | Name: Fusion glycoprotein F0 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 54.970625 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: QIDITKLQHV GVLVNSPKGM KISQNFETRY LILSLIPKIE DSNSCGDQQI KQYKRLLDRL IIPLYDGLKL QKDVIVTNQE SNENTDPRT ERFFGGVIGT IALGVATSAQ ITAAVALVEA KQAKSDIEKL KEAIRDTNKA VQSVCSSVGN CIVAIKSVQD Y VNKEIVPS ...String: QIDITKLQHV GVLVNSPKGM KISQNFETRY LILSLIPKIE DSNSCGDQQI KQYKRLLDRL IIPLYDGLKL QKDVIVTNQE SNENTDPRT ERFFGGVIGT IALGVATSAQ ITAAVALVEA KQAKSDIEKL KEAIRDTNKA VQSVCSSVGN CIVAIKSVQD Y VNKEIVPS IARLGCEAAG LQLGIALTQH YSELTNCFGD NIGSLQEKGI KLQCIASLYR TNITEIFTTS TVDKYDIYDL LF TESIKVR VIDVDLNDYS ITLQVRLPLL TRLLNTQIYK VDSISYNIQN REWYIPLPSH IMTKGAFLGG ADVKECIEAF SSY ICPSDP GFVLNHEMES CLSGNISQCP RTTVTSDIVP RYAFVNGGVV ANCITTTCTC NGIGNRINQP PDQGVKIITH KECN TIGIN GMLFNTNKEG TLAFYTPDDI TLNNSVALDP IDISIELNKV KSDLEESKEW YRRSNQKLSA IEDKIEEILS KIYHI ENEI ARIKKLIGEA P |
-Macromolecule #2: 3x1 monoclonal antibody, VH region
Macromolecule | Name: 3x1 monoclonal antibody, VH region / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 13.932664 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: EVQLLESGGG LVQPGGSLRL SCAASGFTFS SFGMSWVRQS PGKGLEWVAD ISHSAGFLNY ADSVKGRFTV SRDNSKSTLH LQMKSLRAE DTAVYYCAKR LAGLPDLEWL LYPNFLDHWG QGTLVTVSS |
-Macromolecule #3: 3x1 monoclonal antibody, VL region
Macromolecule | Name: 3x1 monoclonal antibody, VL region / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 11.642857 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: SSELTQDPAV SVALGQTVRI TCQGDILRTY YVSWYQQKPG QAPLLVIYGK NNRPSVIPDR FSGSTSGDTA SLTITGAQAE DEAEYYCSS RDRSGNHVLF GGGTKLTVL |
-Macromolecule #4: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 4 / Number of copies: 9 / Formula: NAG |
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Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.19 mg/mL |
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Buffer | pH: 7.5 |
Grid | Model: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 200 / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 295 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 / Details: Collected at 30 degree tilt |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.5 µm / Nominal defocus min: 0.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Space: REAL |
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Output model | ![]() PDB-8dg8: |