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- PDB-3twc: Crystal structure of broad and potent HIV-1 neutralizing antibody... -
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Open data
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Basic information
Entry | Database: PDB / ID: 3twc | ||||||||||||
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Title | Crystal structure of broad and potent HIV-1 neutralizing antibody PGT127 in complex with Man9 | ||||||||||||
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![]() | IMMUNE SYSTEM / Fab / HIV-1 neutralizing antibody / gp120 | ||||||||||||
Function / homology | ![]() IgD immunoglobulin complex / positive regulation of B cell activation / IgA immunoglobulin complex / IgM immunoglobulin complex / IgE immunoglobulin complex / phagocytosis, recognition / Fc-gamma receptor I complex binding / CD22 mediated BCR regulation / complement-dependent cytotoxicity / IgG immunoglobulin complex ...IgD immunoglobulin complex / positive regulation of B cell activation / IgA immunoglobulin complex / IgM immunoglobulin complex / IgE immunoglobulin complex / phagocytosis, recognition / Fc-gamma receptor I complex binding / CD22 mediated BCR regulation / complement-dependent cytotoxicity / IgG immunoglobulin complex / Fc epsilon receptor (FCERI) signaling / antibody-dependent cellular cytotoxicity / immunoglobulin receptor binding / immunoglobulin complex, circulating / Classical antibody-mediated complement activation / phagocytosis, engulfment / Initial triggering of complement / FCGR activation / Role of LAT2/NTAL/LAB on calcium mobilization / complement activation, classical pathway / Role of phospholipids in phagocytosis / Scavenging of heme from plasma / antigen binding / FCERI mediated Ca+2 mobilization / FCGR3A-mediated IL10 synthesis / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / Regulation of Complement cascade / Cell surface interactions at the vascular wall / B cell receptor signaling pathway / FCGR3A-mediated phagocytosis / FCERI mediated MAPK activation / Regulation of actin dynamics for phagocytic cup formation / FCERI mediated NF-kB activation / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / antibacterial humoral response / Interleukin-4 and Interleukin-13 signaling / blood microparticle / adaptive immune response / defense response to bacterium / external side of plasma membrane / innate immune response / extracellular space / extracellular exosome / extracellular region / plasma membrane Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | ![]() ![]() ![]() | ||||||||||||
![]() | Pejchal, R. / Wilson, I.A. | ||||||||||||
![]() | ![]() Title: A potent and broad neutralizing antibody recognizes and penetrates the HIV glycan shield. Authors: Robert Pejchal / Katie J Doores / Laura M Walker / Reza Khayat / Po-Ssu Huang / Sheng-Kai Wang / Robyn L Stanfield / Jean-Philippe Julien / Alejandra Ramos / Max Crispin / Rafael Depetris / ...Authors: Robert Pejchal / Katie J Doores / Laura M Walker / Reza Khayat / Po-Ssu Huang / Sheng-Kai Wang / Robyn L Stanfield / Jean-Philippe Julien / Alejandra Ramos / Max Crispin / Rafael Depetris / Umesh Katpally / Andre Marozsan / Albert Cupo / Sebastien Maloveste / Yan Liu / Ryan McBride / Yukishige Ito / Rogier W Sanders / Cassandra Ogohara / James C Paulson / Ten Feizi / Christopher N Scanlan / Chi-Huey Wong / John P Moore / William C Olson / Andrew B Ward / Pascal Poignard / William R Schief / Dennis R Burton / Ian A Wilson / ![]() Abstract: The HIV envelope (Env) protein gp120 is protected from antibody recognition by a dense glycan shield. However, several of the recently identified PGT broadly neutralizing antibodies appear to ...The HIV envelope (Env) protein gp120 is protected from antibody recognition by a dense glycan shield. However, several of the recently identified PGT broadly neutralizing antibodies appear to interact directly with the HIV glycan coat. Crystal structures of antigen-binding fragments (Fabs) PGT 127 and 128 with Man(9) at 1.65 and 1.29 angstrom resolution, respectively, and glycan binding data delineate a specific high mannose-binding site. Fab PGT 128 complexed with a fully glycosylated gp120 outer domain at 3.25 angstroms reveals that the antibody penetrates the glycan shield and recognizes two conserved glycans as well as a short β-strand segment of the gp120 V3 loop, accounting for its high binding affinity and broad specificity. Furthermore, our data suggest that the high neutralization potency of PGT 127 and 128 immunoglobulin Gs may be mediated by cross-linking Env trimers on the viral surface. | ||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 175.4 KB | Display | ![]() |
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PDB format | ![]() | 138.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 911.3 KB | Display | ![]() |
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Full document | ![]() | 913.6 KB | Display | |
Data in XML | ![]() | 20 KB | Display | |
Data in CIF | ![]() | 29 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 1970C ![]() 3tv3C ![]() 3tygC ![]() 3mugS C: citing same article ( S: Starting model for refinement |
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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: Antibody | Mass: 22230.596 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Antibody | Mass: 25819.910 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#3: Polysaccharide | alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[alpha-D-mannopyranose-(1-3)]alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose Source method: isolated from a genetically manipulated source |
#4: Chemical | ChemComp-AML / |
#5: Water | ChemComp-HOH / |
Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.71 Å3/Da / Density % sol: 54.59 % |
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Crystal grow | Temperature: 277 K / Method: vapor diffusion, sitting drop / pH: 7.5 Details: 14% PEG 4000, 0.1M HEPES pH, 8.5% isopropanol, 15% glycerol, 6.5mM Man9, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MARMOSAIC 325 mm CCD / Detector: CCD / Date: Jun 17, 2011 |
Radiation | Monochromator: Liquid nitrogen-cooled double crystal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1.033 Å / Relative weight: 1 |
Reflection | Resolution: 1.65→25 Å / Num. all: 61874 / Num. obs: 57078 / % possible obs: 92.2 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 1.8 % / Biso Wilson estimate: 20.8 Å2 / Rsym value: 0.055 / Net I/σ(I): 10 |
Reflection shell | Resolution: 1.65→1.69 Å / Redundancy: 1.7 % / Mean I/σ(I) obs: 2.22 / Num. unique all: 4548 / Rsym value: 0.628 / % possible all: 94.9 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: PDB ENTRY 3MUG Resolution: 1.65→24.018 Å / SU ML: 0.39 / Isotropic thermal model: ISOTROPIC / Cross valid method: THROUGHOUT / σ(F): 2 / Phase error: 20.98 / Stereochemistry target values: ML
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Solvent computation | Shrinkage radii: 0.7 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 52.333 Å2 / ksol: 0.464 e/Å3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 29 Å2
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Refine analyze | Luzzati coordinate error obs: 0.39 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.65→24.018 Å
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Refine LS restraints |
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LS refinement shell |
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