[English] 日本語
Yorodumi- PDB-7k8p: Crystal structure of an anti-SARS-CoV-2 human neutralizing antibo... -
+Open data
-Basic information
Entry | Database: PDB / ID: 7k8p | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Crystal structure of an anti-SARS-CoV-2 human neutralizing antibody Fab fragment, C110 | |||||||||
Components |
| |||||||||
Keywords | IMMUNE SYSTEM / Human Neutralizing Antibody / SARS-CoV-2 / Receptor Binding Domain / COVID-19 | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.8 Å | |||||||||
Authors | Dam, K.A. / Barnes, C.O. / Bjorkman, P.J. | |||||||||
Funding support | United States, 2items
| |||||||||
Citation | Journal: Nature / Year: 2020 Title: SARS-CoV-2 neutralizing antibody structures inform therapeutic strategies. Authors: Christopher O Barnes / Claudia A Jette / Morgan E Abernathy / Kim-Marie A Dam / Shannon R Esswein / Harry B Gristick / Andrey G Malyutin / Naima G Sharaf / Kathryn E Huey-Tubman / Yu E Lee / ...Authors: Christopher O Barnes / Claudia A Jette / Morgan E Abernathy / Kim-Marie A Dam / Shannon R Esswein / Harry B Gristick / Andrey G Malyutin / Naima G Sharaf / Kathryn E Huey-Tubman / Yu E Lee / Davide F Robbiani / Michel C Nussenzweig / Anthony P West / Pamela J Bjorkman / Abstract: The coronavirus disease 2019 (COVID-19) pandemic presents an urgent health crisis. Human neutralizing antibodies that target the host ACE2 receptor-binding domain (RBD) of the severe acute ...The coronavirus disease 2019 (COVID-19) pandemic presents an urgent health crisis. Human neutralizing antibodies that target the host ACE2 receptor-binding domain (RBD) of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) spike protein show promise therapeutically and are being evaluated clinically. Here, to identify the structural correlates of SARS-CoV-2 neutralization, we solved eight new structures of distinct COVID-19 human neutralizing antibodies in complex with the SARS-CoV-2 spike trimer or RBD. Structural comparisons allowed us to classify the antibodies into categories: (1) neutralizing antibodies encoded by the VH3-53 gene segment with short CDRH3 loops that block ACE2 and bind only to 'up' RBDs; (2) ACE2-blocking neutralizing antibodies that bind both up and 'down' RBDs and can contact adjacent RBDs; (3) neutralizing antibodies that bind outside the ACE2 site and recognize both up and down RBDs; and (4) previously described antibodies that do not block ACE2 and bind only to up RBDs. Class 2 contained four neutralizing antibodies with epitopes that bridged RBDs, including a VH3-53 antibody that used a long CDRH3 with a hydrophobic tip to bridge between adjacent down RBDs, thereby locking the spike into a closed conformation. Epitope and paratope mapping revealed few interactions with host-derived N-glycans and minor contributions of antibody somatic hypermutations to epitope contacts. Affinity measurements and mapping of naturally occurring and in vitro-selected spike mutants in 3D provided insight into the potential for SARS-CoV-2 to escape from antibodies elicited during infection or delivered therapeutically. These classifications and structural analyses provide rules for assigning current and future human RBD-targeting antibodies into classes, evaluating avidity effects and suggesting combinations for clinical use, and provide insight into immune responses against SARS-CoV-2. | |||||||||
History |
|
-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
---|
-Downloads & links
-Download
PDBx/mmCIF format | 7k8p.cif.gz | 213.4 KB | Display | PDBx/mmCIF format |
---|---|---|---|---|
PDB format | pdb7k8p.ent.gz | 139.9 KB | Display | PDB format |
PDBx/mmJSON format | 7k8p.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7k8p_validation.pdf.gz | 427.8 KB | Display | wwPDB validaton report |
---|---|---|---|---|
Full document | 7k8p_full_validation.pdf.gz | 430.3 KB | Display | |
Data in XML | 7k8p_validation.xml.gz | 17.8 KB | Display | |
Data in CIF | 7k8p_validation.cif.gz | 25.7 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/k8/7k8p ftp://data.pdbj.org/pub/pdb/validation_reports/k8/7k8p | HTTPS FTP |
-Related structure data
Related structure data | 7k8mC 7k8nC 7k8oC 7k8qC 7k8rC 7k8sC 7k8tC 7k8uC 7k8vC 7k8wC 7k8xC 7k8yC 7k8zC 7k90C 6xcaS S: Starting model for refinement C: citing same article (ref.) |
---|---|
Similar structure data |
-Links
-Assembly
Deposited unit |
| ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 |
| ||||||||||||
Unit cell |
|
-Components
#1: Antibody | Mass: 25866.020 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human) |
---|---|
#2: Antibody | Mass: 23653.180 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human) |
#3: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
---|
-Sample preparation
Crystal | Density Matthews: 2.39 Å3/Da / Density % sol: 48.51 % |
---|---|
Crystal grow | Temperature: 298 K / Method: vapor diffusion, sitting drop / pH: 7.3 Details: 0.2 M sodium tartrate dibasic dihydrate, 20 % w/v PEG3350 |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
---|---|
Diffraction source | Source: SYNCHROTRON / Site: SSRL / Beamline: BL12-1 / Wavelength: 0.9795 Å |
Detector | Type: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Jun 19, 2020 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9795 Å / Relative weight: 1 |
Reflection | Resolution: 1.8→38.9 Å / Num. obs: 42891 / % possible obs: 98.8 % / Redundancy: 4.7 % / Biso Wilson estimate: 23.83 Å2 / CC1/2: 0.992 / Rmerge(I) obs: 0.087 / Rpim(I) all: 0.041 / Net I/σ(I): 7.7 |
Reflection shell | Resolution: 1.8→1.86 Å / Redundancy: 2 % / Rmerge(I) obs: 1.07 / Mean I/σ(I) obs: 2 / Num. unique obs: 4284 / CC1/2: 0.78 / Rpim(I) all: 0.82 / % possible all: 78.2 |
-Processing
Software |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Refinement | Method to determine structure: MOLECULAR REPLACEMENT Starting model: PDB entry 6XCA Resolution: 1.8→38.69 Å / SU ML: 0.2005 / Cross valid method: FREE R-VALUE / σ(F): 1.34 / Phase error: 24.6076 Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 33.97 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.8→38.69 Å
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
LS refinement shell |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement TLS group | Refine-ID: X-RAY DIFFRACTION
|