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- PDB-6cxc: 3.9A Cryo-EM structure of murine antibody bound at a novel epitop... -
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Basic information
Entry | Database: PDB / ID: 6cxc | ||||||
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Title | 3.9A Cryo-EM structure of murine antibody bound at a novel epitope of respiratory syncytial virus fusion protein | ||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / respiratory syncytial virus fusion protein / murine antibody / novel epitope / complex / VIRAL PROTEIN-IMMUNE SYSTEM complex | ||||||
Function / homology | ![]() positive regulation of syncytium formation by virus / Translation of respiratory syncytial virus mRNAs / RSV-host interactions / Assembly and release of respiratory syncytial virus (RSV) virions / Maturation of hRSV A proteins / host cell Golgi membrane / Respiratory syncytial virus (RSV) attachment and entry / entry receptor-mediated virion attachment to host cell / symbiont entry into host cell / fusion of virus membrane with host plasma membrane ...positive regulation of syncytium formation by virus / Translation of respiratory syncytial virus mRNAs / RSV-host interactions / Assembly and release of respiratory syncytial virus (RSV) virions / Maturation of hRSV A proteins / host cell Golgi membrane / Respiratory syncytial virus (RSV) attachment and entry / entry receptor-mediated virion attachment to host cell / symbiont entry into host cell / fusion of virus membrane with host plasma membrane / viral envelope / host cell plasma membrane / virion membrane / identical protein binding / plasma membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | ||||||
![]() | Xie, Q. / Wang, Z. / Chen, X. / Ni, F. / Ma, J. / Wang, Q. | ||||||
![]() | ![]() Title: Structure basis of neutralization by a novel site II/IV antibody against respiratory syncytial virus fusion protein. Authors: Qingqing Xie / Zhao Wang / Fengyun Ni / Xiaorui Chen / Jianpeng Ma / Nita Patel / Hanxin Lu / Ye Liu / Jing-Hui Tian / David Flyer / Michael J Massare / Larry Ellingsworth / Gregory Glenn / ...Authors: Qingqing Xie / Zhao Wang / Fengyun Ni / Xiaorui Chen / Jianpeng Ma / Nita Patel / Hanxin Lu / Ye Liu / Jing-Hui Tian / David Flyer / Michael J Massare / Larry Ellingsworth / Gregory Glenn / Gale Smith / Qinghua Wang / ![]() Abstract: Globally, human respiratory syncytial virus (RSV) is a leading cause of lower respiratory tract infections in newborns, young children, and the elderly for which there is no vaccine. The RSV fusion ...Globally, human respiratory syncytial virus (RSV) is a leading cause of lower respiratory tract infections in newborns, young children, and the elderly for which there is no vaccine. The RSV fusion (F) glycoprotein is a major target for vaccine development. Here, we describe a novel monoclonal antibody (designated as R4.C6) that recognizes both pre-fusion and post-fusion RSV F, and binds with nanomole affinity to a unique neutralizing site comprised of antigenic sites II and IV on the globular head. A 3.9 Å-resolution structure of RSV F-R4.C6 Fab complex was obtained by single particle cryo-electron microscopy and 3D reconstruction. The structure unraveled detailed interactions of R4.C6 with antigenic site II on one protomer and site IV on a neighboring protomer of post-fusion RSV F protein. These findings significantly further our understanding of the antigenic complexity of the F protein and provide new insights into RSV vaccine design. | ||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 366.4 KB | Display | ![]() |
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PDB format | ![]() | 287.6 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 7774MC M: map data used to model this data 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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Components
#1: Antibody | Mass: 12831.376 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #2: Antibody | Mass: 13457.151 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() #3: Protein | Mass: 60728.047 Da / Num. of mol.: 6 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() Strain: A2 / Production host: ![]() ![]() #4: Sugar | ChemComp-NAG / Has ligand of interest | N | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Buffer solution | pH: 7 | ||||||||||||||||||||||||
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3 | ||||||||||||||||||||||||
Vitrification | Instrument: LEICA EM GP / Cryogen name: NITROGEN / Humidity: 98 % / Chamber temperature: 295 K |
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Electron microscopy imaging
Microscopy | Model: JEOL 3200FSC |
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Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Cs: 4.7 mm / C2 aperture diameter: 50 µm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: JEOL 3200FSC CRYOHOLDER |
Image recording | Average exposure time: 10 sec. / Electron dose: 50 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
Image scans | Movie frames/image: 50 |
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Processing
Software | Name: PHENIX / Version: 1.11.1_2575: / Classification: refinement | ||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
Symmetry | Point symmetry: C3 (3 fold cyclic) | ||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 543639 / Symmetry type: POINT | ||||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | ||||||||||||||||||||||||||||
Refine LS restraints |
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