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- PDB-3lqa: Crystal structure of clade C gp120 in complex with sCD4 and 21c Fab -

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Basic information

Entry
Database: PDB / ID: 3lqa
TitleCrystal structure of clade C gp120 in complex with sCD4 and 21c Fab
Components
  • Envelope glycoprotein gp160
  • Heavy chain of anti HIV Fab from human 21c antibody
  • Light chain of anti HIV Fab from human 21c antibody
  • T-cell surface glycoprotein CD4
KeywordsIMMUNE SYSTEM / complex / poly reactivity
Function / homology
Function and homology information


virus-mediated perturbation of host defense response => GO:0019049 / : / helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / cellular response to granulocyte macrophage colony-stimulating factor stimulus / interleukin-15-mediated signaling pathway ...virus-mediated perturbation of host defense response => GO:0019049 / : / helper T cell enhancement of adaptive immune response / interleukin-16 binding / interleukin-16 receptor activity / maintenance of protein location in cell / T cell selection / MHC class II protein binding / cellular response to granulocyte macrophage colony-stimulating factor stimulus / interleukin-15-mediated signaling pathway / positive regulation of monocyte differentiation / Nef Mediated CD4 Down-regulation / Alpha-defensins / positive regulation of kinase activity / regulation of T cell activation / T cell receptor complex / extracellular matrix structural constituent / Other interleukin signaling / enzyme-linked receptor protein signaling pathway / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / regulation of calcium ion transport / macrophage differentiation / Generation of second messenger molecules / T cell differentiation / PD-1 signaling / positive regulation of protein kinase activity / Binding and entry of HIV virion / coreceptor activity / positive regulation of calcium-mediated signaling / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / protein tyrosine kinase binding / positive regulation of establishment of T cell polarity / positive regulation of interleukin-2 production / T cell activation / host cell endosome membrane / Vpu mediated degradation of CD4 / calcium-mediated signaling / clathrin-coated endocytic vesicle membrane / cell surface receptor protein tyrosine kinase signaling pathway / positive regulation of T cell activation / positive regulation of peptidyl-tyrosine phosphorylation / transmembrane signaling receptor activity / Cargo recognition for clathrin-mediated endocytosis / Downstream TCR signaling / virus receptor activity / signaling receptor activity / Clathrin-mediated endocytosis / MHC class II protein complex binding / clathrin-dependent endocytosis of virus by host cell / positive regulation of canonical NF-kappaB signal transduction / defense response to Gram-negative bacterium / positive regulation of MAPK cascade / adaptive immune response / positive regulation of viral entry into host cell / membrane => GO:0016020 / positive regulation of ERK1 and ERK2 cascade / cell surface receptor signaling pathway / viral protein processing / early endosome / cell adhesion / immune response / positive regulation of protein phosphorylation / membrane raft / fusion of virus membrane with host plasma membrane / endoplasmic reticulum lumen / external side of plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / lipid binding / structural molecule activity / virion attachment to host cell / endoplasmic reticulum membrane / protein kinase binding / host cell plasma membrane / virion membrane / positive regulation of DNA-templated transcription / enzyme binding / signal transduction / protein homodimerization activity / zinc ion binding / identical protein binding / plasma membrane
Similarity search - Function
CD4, extracellular / T cell CD4 receptor C-terminal region / CD4, extracellular / T cell CD4 receptor C terminal region / T-cell surface antigen CD4 / Immunoglobulin C2-set / Immunoglobulin C2-set domain / HIV Envelope Protein Gp120; Chain G / Human immunodeficiency virus 1, Gp160, envelope glycoprotein / Immunoglobulin ...CD4, extracellular / T cell CD4 receptor C-terminal region / CD4, extracellular / T cell CD4 receptor C terminal region / T-cell surface antigen CD4 / Immunoglobulin C2-set / Immunoglobulin C2-set domain / HIV Envelope Protein Gp120; Chain G / Human immunodeficiency virus 1, Gp160, envelope glycoprotein / Immunoglobulin / Immunoglobulin domain / Envelope glycoprotein Gp160 / Retroviral envelope protein / Retroviral envelope protein GP41-like / Gp120 core superfamily / Envelope glycoprotein GP120 / Human immunodeficiency virus 1, envelope glycoprotein Gp120 / Beta Complex / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulins / Immunoglobulin-like fold / Immunoglobulin-like / Sandwich / Mainly Beta
Similarity search - Domain/homology
T-cell surface glycoprotein CD4 / Envelope glycoprotein gp160
Similarity search - Component
Biological speciesHomo sapiens (human)
HIV-1 (virus)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 3.4 Å
AuthorsDiskin, R. / Marcovecchio, P.M. / Bjorkman, P.J.
CitationJournal: Nat.Struct.Mol.Biol. / Year: 2010
Title: Structure of a clade C HIV-1 gp120 bound to CD4 and CD4-induced antibody reveals anti-CD4 polyreactivity.
Authors: Diskin, R. / Marcovecchio, P.M. / Bjorkman, P.J.
History
DepositionFeb 8, 2010Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 7, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Aug 23, 2017Group: Source and taxonomy / Category: entity_src_gen
Revision 1.3Nov 1, 2017Group: Refinement description / Category: software / Item: _software.name
Revision 1.4Jul 29, 2020Group: Advisory / Data collection ...Advisory / Data collection / Database references / Derived calculations / Structure summary
Category: chem_comp / database_PDB_caveat ...chem_comp / database_PDB_caveat / entity / pdbx_chem_comp_identifier / pdbx_entity_nonpoly / struct_conn / struct_ref_seq_dif / struct_site / struct_site_gen
Item: _chem_comp.name / _chem_comp.type ..._chem_comp.name / _chem_comp.type / _entity.pdbx_description / _pdbx_entity_nonpoly.name / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_ref_seq_dif.details
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 1.5Oct 13, 2021Group: Database references / Structure summary / Category: chem_comp / database_2 / struct_ref_seq_dif
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
C: T-cell surface glycoprotein CD4
G: Envelope glycoprotein gp160
H: Heavy chain of anti HIV Fab from human 21c antibody
L: Light chain of anti HIV Fab from human 21c antibody
hetero molecules


Theoretical massNumber of molelcules
Total (without water)106,5878
Polymers105,7024
Non-polymers8854
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)93.730, 187.930, 151.670
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number20
Space group name H-MC2221

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Components

#1: Protein T-cell surface glycoprotein CD4


Mass: 21472.350 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD4 / Plasmid: pACgp67b / Production host: Spodoptera frugiperda (fall armyworm) / Strain (production host): Hi5 / References: UniProt: P01730
#2: Protein Envelope glycoprotein gp160


Mass: 36794.566 Da / Num. of mol.: 1 / Mutation: T89I, N226D, T232I, N285T, S329N, T388I, N447D
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) HIV-1 (virus) / Gene: env / Plasmid: pACgp67b / Production host: Spodoptera frugiperda (fall armyworm) / Strain (production host): Hi5 / References: UniProt: Q1PHM6
#3: Antibody Heavy chain of anti HIV Fab from human 21c antibody


Mass: 24619.590 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293
#4: Antibody Light chain of anti HIV Fab from human 21c antibody


Mass: 22815.264 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293
#5: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 3.16 Å3/Da / Density % sol: 61.07 %
Description: The diffraction pattern from the crystals was very anisotropic. There is 80% completeness to 3.4A because the crystals diffracted to only 3.9A in the 'b' direction.
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 8.5
Details: 20% (w/v) PEG monomethyl ether 2000, 5% (v/v) PEG 200, 0.2 M Trimethylamine N-oxide, 0.1 M Tris-HCl pH 8.5 , VAPOR DIFFUSION, SITTING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL12-2 / Wavelength: 0.953 Å
DetectorType: MARMOSAIC 325 mm CCD / Detector: CCD / Date: Jun 23, 2009
Details: Flat mirror, double crystal monochromator, vertical and horizontal focussing mirrors
RadiationMonochromator: Liquid nitrogen-cooled double crystal / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.953 Å / Relative weight: 1
ReflectionResolution: 3.4→84 Å / Num. obs: 14975 / % possible obs: 79 % / Observed criterion σ(F): 1 / Observed criterion σ(I): 1 / Redundancy: 3.5 % / Rsym value: 0.12
Reflection shellResolution: 3.4→3.58 Å / Mean I/σ(I) obs: 1.9 / Rsym value: 0.705

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Processing

Software
NameVersionClassificationNB
CNSrefinement
PDB_EXTRACT3.005data extraction
Blu-Icedata collection
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT / Resolution: 3.4→84 Å / Occupancy max: 1 / Occupancy min: 1 / Isotropic thermal model: Group / σ(F): 0
RfactorNum. reflection% reflectionSelection details
Rfree0.322 83 40 %Random 5%, reduced to 0.5% for final rounds of refinement. R values were recorded before the final refinement rounds.
Rwork0.234 ---
obs-14967 79.6 %-
Solvent computationBsol: 75.543 Å2
Displacement parametersBiso max: 285.47 Å2 / Biso mean: 101.992 Å2 / Biso min: 12.02 Å2
Baniso -1Baniso -2Baniso -3
1--0.42 Å20 Å20 Å2
2---1.107 Å20 Å2
3---1.527 Å2
Refinement stepCycle: LAST / Resolution: 3.4→84 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6889 0 56 0 6945
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.024
X-RAY DIFFRACTIONc_angle_d3.475
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1CNS_TOPPAR:protein_rep.paramCNS_TOPPAR:protein.top
X-RAY DIFFRACTION2CNS_TOPPAR:dna-rna_rep.paramCNS_TOPPAR:dna-rna.top
X-RAY DIFFRACTION3CNS_TOPPAR:water_rep.paramCNS_TOPPAR:water.top
X-RAY DIFFRACTION4CNS_TOPPAR:ion.paramCNS_TOPPAR:ion.top
X-RAY DIFFRACTION5CNS_TOPPAR:carbohydrate.paramCNS_TOPPAR:carbohydrate.top

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