[English] 日本語
![](img/lk-miru.gif)
- PDB-7ryv: Anti-HIV neutralizing antibody Ab1573 Fab isolated from sequentia... -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 7ryv | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Anti-HIV neutralizing antibody Ab1573 Fab isolated from sequentially immunized macaques | |||||||||
![]() |
| |||||||||
![]() | IMMUNE SYSTEM / anti-HIV antibody / neutralizing antibody / immunogen design | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ![]() ![]() ![]() | |||||||||
![]() | Yang, Z. / Bjorkman, P.J. | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: Neutralizing antibodies induced in immunized macaques recognize the CD4-binding site on an occluded-open HIV-1 envelope trimer. Authors: Zhi Yang / Kim-Marie A Dam / Michael D Bridges / Magnus A G Hoffmann / Andrew T DeLaitsch / Harry B Gristick / Amelia Escolano / Rajeev Gautam / Malcolm A Martin / Michel C Nussenzweig / ...Authors: Zhi Yang / Kim-Marie A Dam / Michael D Bridges / Magnus A G Hoffmann / Andrew T DeLaitsch / Harry B Gristick / Amelia Escolano / Rajeev Gautam / Malcolm A Martin / Michel C Nussenzweig / Wayne L Hubbell / Pamela J Bjorkman / ![]() Abstract: Broadly-neutralizing antibodies (bNAbs) against HIV-1 Env can protect from infection. We characterize Ab1303 and Ab1573, heterologously-neutralizing CD4-binding site (CD4bs) antibodies, isolated from ...Broadly-neutralizing antibodies (bNAbs) against HIV-1 Env can protect from infection. We characterize Ab1303 and Ab1573, heterologously-neutralizing CD4-binding site (CD4bs) antibodies, isolated from sequentially-immunized macaques. Ab1303/Ab1573 binding is observed only when Env trimers are not constrained in the closed, prefusion conformation. Fab-Env cryo-EM structures show that both antibodies recognize the CD4bs on Env trimer with an 'occluded-open' conformation between closed, as targeted by bNAbs, and fully-open, as recognized by CD4. The occluded-open Env trimer conformation includes outwardly-rotated gp120 subunits, but unlike CD4-bound Envs, does not exhibit V1V2 displacement, 4-stranded gp120 bridging sheet, or co-receptor binding site exposure. Inter-protomer distances within trimers measured by double electron-electron resonance spectroscopy suggest an equilibrium between occluded-open and closed Env conformations, consistent with Ab1303/Ab1573 binding stabilizing an existing conformation. Studies of Ab1303/Ab1573 demonstrate that CD4bs neutralizing antibodies that bind open Env trimers can be raised by immunization, thereby informing immunogen design and antibody therapeutic efforts. | |||||||||
History |
|
-
Structure visualization
Structure viewer | Molecule: ![]() ![]() |
---|
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 343 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 277.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 487.4 KB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 512.6 KB | Display | |
Data in XML | ![]() | 67.5 KB | Display | |
Data in CIF | ![]() | 95.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7ryuSC ![]() 7tfnC ![]() 7tfoC S: Starting model for refinement C: citing same article ( |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
| ||||||||
---|---|---|---|---|---|---|---|---|---|
1 | ![]()
| ||||||||
2 | ![]()
| ||||||||
3 | ![]()
| ||||||||
4 | ![]()
| ||||||||
Unit cell |
|
-
Components
#1: Antibody | Mass: 24007.098 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Antibody | Mass: 23259.598 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #3: Water | ChemComp-HOH / | |
---|
-Experimental details
-Experiment
Experiment | Method: ![]() |
---|
-
Sample preparation
Crystal | Density Matthews: 2.43 Å3/Da / Density % sol: 49.48 % |
---|---|
Crystal grow | Temperature: 293.15 K / Method: evaporation / Details: 0.1M Tris (pH 8.2), 26% (w/v) PEG 4000 |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
---|---|
Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS EIGER X 16M / Detector: PIXEL / Date: May 21, 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: 2.24→38.82 Å / Num. obs: 170333 / % possible obs: 99 % / Redundancy: 3.6 % / Biso Wilson estimate: 26.17 Å2 / CC1/2: 0.97 / Net I/σ(I): 5.2 |
Reflection shell | Resolution: 2.24→2.28 Å / Mean I/σ(I) obs: 1.6 / Num. unique obs: 8678 / CC1/2: 0.52 |
-
Processing
Software |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Refinement | Method to determine structure: ![]() Starting model: 7RYU Resolution: 2.5→38.65 Å / SU ML: 0.25 / Cross valid method: THROUGHOUT / σ(F): 1.35 / Phase error: 30.45 / Stereochemistry target values: ML
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso max: 92.02 Å2 / Biso mean: 29.5248 Å2 / Biso min: 7.61 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: final / Resolution: 2.5→38.65 Å
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
LS refinement shell | Refine-ID: X-RAY DIFFRACTION / Rfactor Rfree error: 0 / Total num. of bins used: 14
|