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- PDB-1n0x: Crystal Structure of a Broadly Neutralizing Anti-HIV-1 Antibody i... -
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Basic information
Entry | Database: PDB / ID: 1n0x | ||||||
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Title | Crystal Structure of a Broadly Neutralizing Anti-HIV-1 Antibody in Complex with a Peptide Mimotope | ||||||
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![]() | IMMUNE SYSTEM / antibody-peptide complex / peptide dimer | ||||||
Function / homology | ![]() IgD immunoglobulin complex / IgM immunoglobulin complex / IgA immunoglobulin complex / IgE immunoglobulin complex / CD22 mediated BCR regulation / IgG immunoglobulin complex / Fc epsilon receptor (FCERI) signaling / Classical antibody-mediated complement activation / Initial triggering of complement / FCGR activation ...IgD immunoglobulin complex / IgM immunoglobulin complex / IgA immunoglobulin complex / IgE immunoglobulin complex / CD22 mediated BCR regulation / IgG immunoglobulin complex / Fc epsilon receptor (FCERI) signaling / Classical antibody-mediated complement activation / Initial triggering of complement / FCGR activation / immunoglobulin mediated immune response / Role of phospholipids in phagocytosis / Role of LAT2/NTAL/LAB on calcium mobilization / Scavenging of heme from plasma / immunoglobulin complex, circulating / immunoglobulin receptor binding / FCERI mediated Ca+2 mobilization / FCGR3A-mediated IL10 synthesis / complement activation, classical pathway / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / Regulation of Complement cascade / antigen binding / Cell surface interactions at the vascular wall / FCERI mediated MAPK activation / FCGR3A-mediated phagocytosis / B cell receptor signaling pathway / 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 / adaptive immune response / Potential therapeutics for SARS / blood microparticle / immune response / extracellular space / extracellular exosome / extracellular region / metal ion binding / plasma membrane Similarity search - Function | ||||||
Biological species | ![]() synthetic construct (others) | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Saphire, E.O. / Montero, M. / Menendez, A. / Irving, M.B. / Zwick, M.B. / Parren, P.W.H.I. / Burton, D.R. / Scott, J.K. / Wilson, I.A. | ||||||
![]() | ![]() Title: Crystal Structure of a Broadly Neutralizing Anti-HIV-1 Antibody in Complex with a Peptide Mimotope Authors: Saphire, E.O. / Montero, M. / Menendez, A. / Irving, M.B. / Zwick, M.B. / Parren, P.W.H.I. / Burton, D.R. / Scott, J.K. / Wilson, I.A. | ||||||
History |
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Remark 999 | Sequence The Genbank database sequence (AAA52919) is the correct match for the variable portion of ...Sequence The Genbank database sequence (AAA52919) is the correct match for the variable portion of the heavy chain except that the N-terminus has been changed from LEQSGAE to QVQLVQSGAE in the process of cloning from the recombinant Fab fragment to the IgG. The constant domains of the heavy chains H and K have the same sequence as all human IgG1 antibodies. The variable region of the light chain matches the Genbank database sequence (AAA52920) except that the N-terminus was changed in cloning to the IgG from ELTQAPG to EIVLTQSPG; the constant domains of the light chains L and M have the same sequence as all human kappa light chains. The authors maintain that the sequence of L and M, residue ALA 34 should be an ALA and not ARG (residue 33 in the sequence database). |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 206.5 KB | Display | ![]() |
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PDB format | ![]() | 169.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 1hzhS S: Starting model for refinement |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Unit cell |
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Details | Fab #1 is comprised of chains L and H. Fab #2 is comprised of chains M and K. / The peptide chains P and R form a dimer. Peptide chain P binds Fab #1 (LH) Peptide chain R binds Fab #2 (MK) |
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Components
-Protein/peptide , 1 types, 2 molecules PR
#3: Protein/peptide | Mass: 2546.900 Da / Num. of mol.: 2 / Source method: obtained synthetically Details: selected from phage display peptide library, then chemically synthesized. Source: (synth.) synthetic construct (others) |
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-Antibody , 2 types, 4 molecules LMHK
#1: Antibody | Mass: 23707.354 Da / Num. of mol.: 2 / Fragment: UNP residues 132-239 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #2: Antibody | Mass: 24938.898 Da / Num. of mol.: 2 / Fragment: UNP residues 117-222 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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-Non-polymers , 5 types, 739 molecules ![](data/chem/img/GOL.gif)
![](data/chem/img/SO4.gif)
![](data/chem/img/CXS.gif)
![](data/chem/img/K.gif)
![](data/chem/img/HOH.gif)
![](data/chem/img/SO4.gif)
![](data/chem/img/CXS.gif)
![](data/chem/img/K.gif)
![](data/chem/img/HOH.gif)
#4: Chemical | ChemComp-GOL / #5: Chemical | ChemComp-SO4 / #6: Chemical | ChemComp-CXS / | #7: Chemical | ChemComp-K / | #8: Water | ChemComp-HOH / | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.54 Å3/Da / Density % sol: 51.61 % |
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Crystal grow | Temperature: 295.5 K / Method: vapor diffusion, sitting drop / pH: 10.5 Details: ammonium sulfate, lithium sulfate, CAPS buffer, pH 10.5, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K |
-Data collection
Diffraction | Mean temperature: 171 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: ADSC QUANTUM 315 / Detector: CCD / Date: May 22, 2000 / Details: flat mirror |
Radiation | Monochromator: Si 111 CHANNEL / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.965 Å / Relative weight: 1 |
Reflection | Resolution: 1.78→33.45 Å / Num. all: 94383 / Num. obs: 84895 / % possible obs: 92 % / Observed criterion σ(F): 2 / Observed criterion σ(I): 2 / Redundancy: 2.3 % / Biso Wilson estimate: 20.1 Å2 / Rsym value: 0.06 / Net I/σ(I): 17.6 |
Reflection shell | Resolution: 1.78→1.81 Å / Mean I/σ(I) obs: 1.5 / Num. unique all: 4468 / Rsym value: 0.385 / % possible all: 87.1 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: Fab domains from uncomplexed IgG1 b12 structure (1HZH) Resolution: 1.8→45 Å / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber Details: 10% test set (9419) reflections selected for initial rounds of refinement. For final round of refinement, a 2% test set was randomly selected from reflections contained in the original 10% test set.
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Displacement parameters |
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Refinement step | Cycle: LAST / Resolution: 1.8→45 Å
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