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- PDB-8z7n: Structure of HIV-1 CH119 SOSIP.664 trimer in complex with CD4 mol... -

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Basic information

Entry
Database: PDB / ID: 8z7n
TitleStructure of HIV-1 CH119 SOSIP.664 trimer in complex with CD4 molecules
Components
  • (Envelope glycoprotein gp160) x 2
  • T-cell surface glycoprotein CD4
KeywordsVIRUS / HIV-1 / CRF_07BC / Env / CD4
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 / extracellular matrix structural constituent / T cell receptor complex / 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 / T cell differentiation / Generation of second messenger molecules / PD-1 signaling / positive regulation of protein kinase activity / Binding and entry of HIV virion / coreceptor activity / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / cell surface receptor protein tyrosine kinase signaling pathway / positive regulation of establishment of T cell polarity / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / T cell activation / protein tyrosine kinase binding / host cell endosome membrane / Vpu mediated degradation of CD4 / calcium-mediated signaling / clathrin-coated endocytic vesicle membrane / positive regulation of peptidyl-tyrosine phosphorylation / transmembrane signaling receptor activity / positive regulation of T cell activation / Cargo recognition for clathrin-mediated endocytosis / Downstream TCR signaling / MHC class II protein complex binding / Clathrin-mediated endocytosis / signaling receptor activity / virus receptor activity / clathrin-dependent endocytosis of virus by host cell / defense response to Gram-negative bacterium / positive regulation of canonical NF-kappaB signal transduction / adaptive immune response / positive regulation of MAPK cascade / positive regulation of ERK1 and ERK2 cascade / early endosome / positive regulation of viral entry into host cell / cell surface receptor signaling pathway / viral protein processing / cell adhesion / immune response / positive regulation of protein phosphorylation / membrane raft / endoplasmic reticulum lumen / external side of plasma membrane / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / lipid binding / viral envelope / endoplasmic reticulum membrane / virion attachment to host cell / apoptotic process / protein kinase binding / host cell plasma membrane / positive regulation of DNA-templated transcription / virion membrane / structural molecule activity / 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 / T-cell surface glycoprotein CD4
Similarity search - Component
Biological speciesHuman immunodeficiency virus 1
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.58 Å
AuthorsLi, D. / Wang, T.
Funding support China, 1items
OrganizationGrant numberCountry
Not funded China
CitationJournal: Biochem Biophys Res Commun / Year: 2024
Title: Intermediate open state of CD4-bound HIV-1 env heterotrimers in asia CRFs.
Authors: Dan Li / Li Liu / Xuejun Ye / Yuyang Chen / Qiaoju Ren / ShaoJian Xu / Yan Ren / He Cao / Tao Wang /
Abstract: The HIV-1 envelope glycoprotein (Env) plays crucial role in viral infection by facilitating viral attachment to host cells and inducing fusion of the virus with the host cell membrane. This fusion ...The HIV-1 envelope glycoprotein (Env) plays crucial role in viral infection by facilitating viral attachment to host cells and inducing fusion of the virus with the host cell membrane. This fusion allows the HIV-1 viral genome to enter the target cell then triggering various stages of the viral life cycle. The native Env directly interacts with the main receptor CD4 and the co-receptor (CCR5 or CXCR4) in human cell membrane then induces membrane fusion. The elucidation of the structure of Env with CD4 and co-receptors in different HIV-1 subtypes is essential for the understanding of the mechanism of virus entry. Here we report the Cryo-EM structure of the CD4-bound HIV-1 heterotrimeric Env from Asia prevalent CRF07_BC CH119 strain. In this structure, the binding of three CD4 molecules with Env induced extensively conformational changes in gp120, resulting in the transformation of the Env from close state to intermediate open state. Additionally, the conformational shift of V1/V2 loops of the heterotrimeric Env allosterically expose the V3 loop and promoting the further interactions with co-receptor CCR5 or CXCR4. These findings not only illustrate the structural complexity and plasticity of HIV-1 Env but also give new insights how the biological trimeric Env initialize the immune recognition and membrane fusion.
History
DepositionApr 20, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 18, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Envelope glycoprotein gp160
B: Envelope glycoprotein gp160
C: T-cell surface glycoprotein CD4
D: Envelope glycoprotein gp160
E: Envelope glycoprotein gp160
F: T-cell surface glycoprotein CD4
G: Envelope glycoprotein gp160
H: Envelope glycoprotein gp160
I: T-cell surface glycoprotein CD4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)367,63927
Polymers363,6579
Non-polymers3,98218
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Envelope glycoprotein gp160 / Env polyprotein


Mass: 58258.125 Da / Num. of mol.: 3 / Mutation: A507C
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: A1EAH4
#2: Protein Envelope glycoprotein gp160 / Env polyprotein


Mass: 18285.703 Da / Num. of mol.: 3 / Mutation: I48P,T94C
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human immunodeficiency virus 1 / Gene: env / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: A1EAH4
#3: Protein T-cell surface glycoprotein CD4 / T-cell surface antigen T4/Leu-3


Mass: 44675.320 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): HEK293 / Production host: Homo sapiens (human) / References: UniProt: P01730
#4: 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


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 18 / Source method: obtained synthetically / Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
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
Has ligand of interestY

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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: Structure of HIV-1 CH119 SOSIP.664 trimer in complex with CD4 molecules
Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Source (natural)Organism: Human immunodeficiency virus 1
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenConc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen 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 FIELD / Nominal defocus max: 2400 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 50.8 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.58 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1045667 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0116944
ELECTRON MICROSCOPYf_angle_d1.30422974
ELECTRON MICROSCOPYf_dihedral_angle_d9.7332286
ELECTRON MICROSCOPYf_chiral_restr0.0652703
ELECTRON MICROSCOPYf_plane_restr0.0082889

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