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Open data
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Basic information
Entry | Database: PDB / ID: 6zh9 | |||||||||
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Title | Ternary complex CR3022 H11-H4 and RBD (SARS-CoV-2) | |||||||||
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![]() | ANTIVIRAL PROTEIN / Covid19 / nanobody / SARS-CoV-2 | |||||||||
Function / homology | ![]() Maturation of spike protein / viral translation / Translation of Structural Proteins / host cell surface / Virion Assembly and Release / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell ...Maturation of spike protein / viral translation / Translation of Structural Proteins / host cell surface / Virion Assembly and Release / host extracellular space / symbiont-mediated-mediated suppression of host tetherin activity / Induction of Cell-Cell Fusion / structural constituent of virion / entry receptor-mediated virion attachment to host cell / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / membrane fusion / Attachment and Entry / positive regulation of viral entry into host cell / receptor-mediated virion attachment to host cell / host cell surface receptor binding / symbiont-mediated suppression of host innate immune response / receptor ligand activity / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / SARS-CoV-2 activates/modulates innate and adaptive immune responses / host cell plasma membrane / virion membrane / identical protein binding / membrane / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | ![]() ![]() ![]() | |||||||||
![]() | Naismith, J.H. / Mikolajek, H. / Le Bas, A. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Neutralizing nanobodies bind SARS-CoV-2 spike RBD and block interaction with ACE2. Authors: Jiandong Huo / Audrey Le Bas / Reinis R Ruza / Helen M E Duyvesteyn / Halina Mikolajek / Tomas Malinauskas / Tiong Kit Tan / Pramila Rijal / Maud Dumoux / Philip N Ward / Jingshan Ren / ...Authors: Jiandong Huo / Audrey Le Bas / Reinis R Ruza / Helen M E Duyvesteyn / Halina Mikolajek / Tomas Malinauskas / Tiong Kit Tan / Pramila Rijal / Maud Dumoux / Philip N Ward / Jingshan Ren / Daming Zhou / Peter J Harrison / Miriam Weckener / Daniel K Clare / Vinod K Vogirala / Julika Radecke / Lucile Moynié / Yuguang Zhao / Javier Gilbert-Jaramillo / Michael L Knight / Julia A Tree / Karen R Buttigieg / Naomi Coombes / Michael J Elmore / Miles W Carroll / Loic Carrique / Pranav N M Shah / William James / Alain R Townsend / David I Stuart / Raymond J Owens / James H Naismith / ![]() Abstract: The SARS-CoV-2 virus is more transmissible than previous coronaviruses and causes a more serious illness than influenza. The SARS-CoV-2 receptor binding domain (RBD) of the spike protein binds to the ...The SARS-CoV-2 virus is more transmissible than previous coronaviruses and causes a more serious illness than influenza. The SARS-CoV-2 receptor binding domain (RBD) of the spike protein binds to the human angiotensin-converting enzyme 2 (ACE2) receptor as a prelude to viral entry into the cell. Using a naive llama single-domain antibody library and PCR-based maturation, we have produced two closely related nanobodies, H11-D4 and H11-H4, that bind RBD (K of 39 and 12 nM, respectively) and block its interaction with ACE2. Single-particle cryo-EM revealed that both nanobodies bind to all three RBDs in the spike trimer. Crystal structures of each nanobody-RBD complex revealed how both nanobodies recognize the same epitope, which partly overlaps with the ACE2 binding surface, explaining the blocking of the RBD-ACE2 interaction. Nanobody-Fc fusions showed neutralizing activity against SARS-CoV-2 (4-6 nM for H11-H4, 18 nM for H11-D4) and additive neutralization with the SARS-CoV-1/2 antibody CR3022. | |||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 301.5 KB | Display | ![]() |
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PDB format | ![]() | Display | ![]() | |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 452.1 KB | Display | ![]() |
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Full document | ![]() | 467.3 KB | Display | |
Data in XML | ![]() | 27.6 KB | Display | |
Data in CIF | ![]() | 37.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6z43C ![]() 6zhdC ![]() 6zbyS S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 22874.785 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Antibody | Mass: 24186.740 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#3: Protein | Mass: 22115.834 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: S, 2 / Production host: ![]() |
#4: Antibody | Mass: 15045.752 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() ![]() |
Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 4.22 Å3/Da / Density % sol: 70.85 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, sitting drop Details: mixing 0.2 uL of the 18 mg/mL complex with 0.1 uL of the crystallization buffer containing 0.2 M Sodium acetate trihydrate, 0.1 M MES pH 6.0, 20 % w/v PEG 8000. |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS PILATUS 6M-F / Detector: PIXEL / Date: Jun 18, 2020 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.98 Å / Relative weight: 1 |
Reflection | Resolution: 3.31→80.253 Å / Num. obs: 22105 / % possible obs: 100 % / Redundancy: 25.6 % / CC1/2: 1 / Rmerge(I) obs: 0.091 / Net I/av σ(I): 21.9 / Net I/σ(I): 0.018 |
Reflection shell | Resolution: 3.31→3.4 Å / Rmerge(I) obs: 3.9 / Mean I/σ(I) obs: 0.5 / Num. unique obs: 1538 / CC1/2: 0.3 / Rpim(I) all: 0.77 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 6ZBY Resolution: 3.31→80.243 Å / Cor.coef. Fo:Fc: 0.83 / Cor.coef. Fo:Fc free: 0.9 / SU B: 109.814 / SU ML: 0.696 / Cross valid method: FREE R-VALUE / ESU R Free: 0.545 Details: Hydrogens have been added in their riding positions
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1 Å / Solvent model: MASK BULK SOLVENT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 134 Å2
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Refinement step | Cycle: LAST / Resolution: 3.31→80.243 Å
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Refine LS restraints |
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LS refinement shell |
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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