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- PDB-6opp: Asymmetric model of CD4- and 17-bound B41 HIV-1 Env SOSIP in comp... -

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Basic information

Entry
Database: PDB / ID: 6opp
TitleAsymmetric model of CD4- and 17-bound B41 HIV-1 Env SOSIP in complex with DDM
Components
  • (Envelope glycoprotein ...) x 2
  • 17b Fab heavy chain
  • 17b Fab light chain
  • T-cell surface glycoprotein CD4
KeywordsVIRAL PROTEIN/Immune System / HIV-1 / Env / CD4 / receptor-bound state / detergent / DDM / VIRAL PROTEIN / VIRAL PROTEIN-Immune System complex
Function / homology
Function and homology information


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 ...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 / virus-mediated perturbation of host defense response / 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 / 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 / virion attachment to host cell / endoplasmic reticulum membrane / protein kinase binding / host cell plasma membrane / virion membrane / structural molecule activity / 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 / Immunoglobulin / Immunoglobulin domain / Envelope glycoprotein Gp160 ...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 / 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 / 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 / Immunoglobulin-like fold
Similarity search - Domain/homology
Envelope glycoprotein gp160 / Envelope glycoprotein gp160 / T-cell surface glycoprotein CD4
Similarity search - Component
Biological speciesHomo sapiens (human)
Human immunodeficiency virus 1
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å
AuthorsOzorowski, G. / Torres, J.L. / Ward, A.B.
Funding support United States, 3items
OrganizationGrant numberCountry
Other private109718-63-RKNT United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM069832 United States
Bill & Melinda Gates FoundationOPP1115782 United States
Citation
Journal: Cell Rep / Year: 2020
Title: A Strain-Specific Inhibitor of Receptor-Bound HIV-1 Targets a Pocket near the Fusion Peptide.
Authors: Gabriel Ozorowski / Jonathan L Torres / Diogo Santos-Martins / Stefano Forli / Andrew B Ward /
Abstract: Disruption of viral fusion represents a viable, albeit under-explored, target for HIV therapeutics. Here, while studying the receptor-bound envelope glycoprotein conformation by cryoelectron ...Disruption of viral fusion represents a viable, albeit under-explored, target for HIV therapeutics. Here, while studying the receptor-bound envelope glycoprotein conformation by cryoelectron microscopy (cryo-EM), we identify a pocket near the base of the trimer containing a bound detergent molecule and perform in silico drug screening by using a library of drug-like and commercially available molecules. After down-selection, we solve cryo-EM structures that validate the binding of two small molecule hits in very similar manners to the predicted binding poses, including interactions with aromatic residues within the fusion peptide. One of the molecules demonstrates low micromolar inhibition of the autologous virus by using a very rare phenylalanine in the fusion peptide and stabilizing the surrounding region. This work demonstrates that small molecules can target the fusion process, providing an additional target for anti-HIV therapeutics, and highlights the need to explore how fusion peptide sequence variations affect receptor-mediated conformational states across diverse HIV strains.
#1: Journal: Biorxiv / Year: 2020
Title: A strain-specific inhibitor of receptor-bound HIV-1 targets a pocket near the fusion peptide and offers a template for drug design
Authors: Ozorowski, G. / Torres, J.L. / Santos-Martins, D. / Forli, S. / Ward, A.B.
History
DepositionApr 25, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 21, 2020Provider: repository / Type: Initial release
Revision 1.1Dec 9, 2020Group: Database references / Category: citation / citation_author

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Structure visualization

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  • Deposited structure unit
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Assembly

Deposited unit
L: 17b Fab light chain
B: Envelope glycoprotein gp41
A: Envelope glycoprotein gp160
C: T-cell surface glycoprotein CD4
H: 17b Fab heavy chain
I: 17b Fab light chain
D: Envelope glycoprotein gp160
E: Envelope glycoprotein gp41
G: 17b Fab heavy chain
O: 17b Fab light chain
K: Envelope glycoprotein gp41
J: Envelope glycoprotein gp160
M: T-cell surface glycoprotein CD4
N: 17b Fab heavy chain
F: T-cell surface glycoprotein CD4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)467,57575
Polymers441,54115
Non-polymers26,03560
Water0
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Envelope glycoprotein ... , 2 types, 6 molecules BEKADJ

#2: Protein Envelope glycoprotein gp41


Mass: 17357.824 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Strain: B41 / Gene: env / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: B3UEZ6
#3: Protein Envelope glycoprotein gp160 / Env polyprotein


Mass: 58872.902 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: B3UES2

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Protein , 1 types, 3 molecules CMF

#4: Protein T-cell surface glycoprotein CD4 / T-cell surface antigen T4/Leu-3


Mass: 23039.172 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CD4 / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P01730

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Antibody , 2 types, 6 molecules LIOHGN

#1: Antibody 17b Fab light chain


Mass: 23425.869 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293F / Production host: Homo sapiens (human)
#5: Antibody 17b Fab heavy chain


Mass: 24484.455 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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Sugars , 8 types, 60 molecules

#6: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 16
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#7: Polysaccharide
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 10
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}}LINUCSPDB-CARE
#8: 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-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1235.105 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-2DManpa1-2DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,7,6/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3-3-3/a4-b1_b4-c1_c3-d1_c6-g1_d2-e1_e2-f1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{[(2+1)][a-D-Manp]{[(2+1)][a-D-Manp]{}}}[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#9: Polysaccharide alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 748.682 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-3DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,4,3/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3/a4-b1_b4-c1_c3-d1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#10: Polysaccharide alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 1072.964 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-2DManpa1-3[DManpa1-6]DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,6,5/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3-3-3/a4-b1_b4-c1_c3-d1_c6-f1_d2-e1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(3+1)][a-D-Manp]{[(2+1)][a-D-Manp]{}}[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#11: Polysaccharide alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 748.682 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-6DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/3,4,3/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5][a1122h-1a_1-5]/1-1-2-3/a4-b1_b4-c1_c6-d1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{[(6+1)][a-D-Manp]{}}}}}LINUCSPDB-CARE
#12: Sugar ChemComp-LMT / DODECYL-BETA-D-MALTOSIDE


Type: D-saccharide / Mass: 510.615 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C24H46O11 / Feature type: SUBJECT OF INVESTIGATION / Comment: detergent*YM
#13: 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.: 24
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: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: HIV-1 Env B41 SOSIP in complex with soluble CD4, 17b Fab and DDM
Type: COMPLEX / Entity ID: #1-#5 / Source: MULTIPLE SOURCES
Molecular weightValue: 0.63 MDa / Experimental value: NO
Source (natural)Organism: Human immunodeficiency virus 1
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4 / Details: Detergent added shortly (<5 minutes) prior to grid freezing
Buffer component
IDConc.NameBuffer-ID
150 mMTris1
2150 mMNaClSodium chloride1
30.06 mMn-Dodecyl B-D-maltoside1
SpecimenConc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: C-flat-2/2
VitrificationInstrument: HOMEMADE PLUNGER / Cryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 22500 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 10 sec. / Electron dose: 58 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of real images: 1148
Image scansSampling size: 5 µm / Movie frames/image: 50

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Processing

EM software
IDNameVersionCategoryDetails
1cryoSPARC2particle selectionTemplate picking
2Leginonimage acquisition
4Gctf1.06CTF correctionCryoSPARC 2 implementation
7UCSF Chimera1.13model fitting
8Coot0.9-premodel fitting
10cryoSPARC2initial Euler assignment
11cryoSPARC2final Euler assignment
12cryoSPARC2classification
13cryoSPARC23D reconstruction
14Rosetta3.1model refinementRosetta Relax
15Coot0.9-premodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 183480
Details: FSC resolution estimation calculated in CryoSPARC 2 and Relion 3.0
Num. of class averages: 3 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Atomic model buildingPDB-ID: 5VN3

5vn3

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