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- EMDB-20150: CD4- and 17-bound HIV-1 Env B41 SOSIP in complex with small molec... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-20150 | |||||||||
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Title | CD4- and 17-bound HIV-1 Env B41 SOSIP in complex with small molecule GO35 | |||||||||
![]() | Sharpened map | |||||||||
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![]() | HIV-1 / Env / CD4 / receptor-bound state / small molecule / fusion inhibitor / VIRAL PROTEIN / VIRAL PROTEIN-Immune System complex | |||||||||
Function / homology | ![]() 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 / positive regulation of kinase activity / cellular response to granulocyte macrophage colony-stimulating factor stimulus / interleukin-15-mediated signaling pathway / positive regulation of monocyte differentiation ...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 / positive regulation of kinase activity / 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 / regulation of T cell activation / Other interleukin signaling / extracellular matrix structural constituent / T cell receptor complex / enzyme-linked receptor protein signaling pathway / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / macrophage differentiation / regulation of calcium ion transport / Generation of second messenger molecules / T cell differentiation / Co-inhibition by PD-1 / 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 / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / cell surface receptor protein tyrosine kinase signaling pathway / protein tyrosine kinase binding / host cell endosome membrane / Vpu mediated degradation of CD4 / clathrin-coated endocytic vesicle membrane / calcium-mediated signaling / positive regulation of T cell activation / MHC class II protein complex binding / transmembrane signaling receptor activity / Downstream TCR signaling / Cargo recognition for clathrin-mediated endocytosis / signaling receptor activity / Clathrin-mediated endocytosis / positive regulation of protein phosphorylation / virus receptor activity / defense response to Gram-negative bacterium / clathrin-dependent endocytosis of virus by host cell / adaptive immune response / positive regulation of canonical NF-kappaB signal transduction / positive regulation of viral entry into host cell / early endosome / cell surface receptor signaling pathway / positive regulation of ERK1 and ERK2 cascade / positive regulation of MAPK cascade / cell adhesion / viral protein processing / immune response / membrane raft / endoplasmic reticulum lumen / external side of plasma membrane / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / lipid binding / viral envelope / endoplasmic reticulum membrane / protein kinase binding / positive regulation of DNA-templated transcription / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / enzyme binding / signal transduction / protein homodimerization activity / zinc ion binding / identical protein binding / membrane / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
![]() | Ozorowski G / Torres JL | |||||||||
Funding support | ![]()
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![]() | ![]() 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: ![]() 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 JL / Santos-Martins D / Forli S / Ward AB | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 86 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 23.7 KB 23.7 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 10.2 KB | Display | ![]() |
Images | ![]() | 55.8 KB | ||
Masks | ![]() | 91.1 MB | ![]() | |
Filedesc metadata | ![]() | 7.7 KB | ||
Others | ![]() ![]() | 84.5 MB 84.5 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 1.1 MB | Display | ![]() |
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Full document | ![]() | 1.1 MB | Display | |
Data in XML | ![]() | 17.7 KB | Display | |
Data in CIF | ![]() | 23.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6opnMC ![]() 6opoC ![]() 6oppC ![]() 6opqC ![]() 6x5bC ![]() 6x5cC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Sharpened map | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.03 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
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Density Histograms |
-Half map: Half map A
File | emd_20150_half_map_1.map | ||||||||||||
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Annotation | Half map A | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: Half map B
File | emd_20150_half_map_2.map | ||||||||||||
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Annotation | Half map B | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : CD4- and 17b-bound HIV-1 Env B41 SOSIP in complex with small mole...
Entire | Name: CD4- and 17b-bound HIV-1 Env B41 SOSIP in complex with small molecule GO35 |
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Components |
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-Supramolecule #1: CD4- and 17b-bound HIV-1 Env B41 SOSIP in complex with small mole...
Supramolecule | Name: CD4- and 17b-bound HIV-1 Env B41 SOSIP in complex with small molecule GO35 type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 50 KDa |
-Supramolecule #2: 17b fragment antigen binding
Supramolecule | Name: 17b fragment antigen binding / type: complex / ID: 2 / Parent: 1 Details: 17b Fab added to aid in particle tumbling and initial alignments. Most of the Fab was masked out during final refinements to increase resolution of particle core and small molecule binding pocket. |
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-Macromolecule #1: Envelope glycoprotein gp160
Macromolecule | Name: Envelope glycoprotein gp160 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 58.872902 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MDAMKRGLCC VLLLCGAVFV SPSQEIHARF RRGARAAKKW VTVYYGVPVW KEATTTLFCA SDAKAYDTEV HNVWATHACV PTDPNPQEI VLGNVTENFN MWKNNMVEQM HEDIISLWDQ SLKPCVKLTP LCVTLNCNNV NTNNTNNSTN ATISDWEKME T GEMKNCSF ...String: MDAMKRGLCC VLLLCGAVFV SPSQEIHARF RRGARAAKKW VTVYYGVPVW KEATTTLFCA SDAKAYDTEV HNVWATHACV PTDPNPQEI VLGNVTENFN MWKNNMVEQM HEDIISLWDQ SLKPCVKLTP LCVTLNCNNV NTNNTNNSTN ATISDWEKME T GEMKNCSF NVTTSIRDKI KKEYALFYKL DVVPLENKNN INNTNITNYR LINCNTSVIT QACPKVSFEP IPIHYCAPAG FA ILKCNSK TFNGSGPCTN VSTVQCTHGI RPVVSTQLLL NGSLAEEEIV IRSENITDNA KTIIVQLNEA VEINCTRPNN NTR KSIHIG PGRAFYATGD IIGNIRQAHC NISKARWNET LGQIVAKLEE QFPNKTIIFN HSSGGDPEIV THSFNCGGEF FYCN TTPLF NSTWNNTRTD DYPTGGEQNI TLQCRIKQII NMWQGVGKAM YAPPIRGQIR CSSNITGLLL TRDGGRDQNG TETFR PGGG NMRDNWRSEL YKYKVVKIEP LGIAPTACKR RVVQRRRRRR UniProtKB: Envelope glycoprotein gp160 |
-Macromolecule #2: Envelope glycoprotein gp41
Macromolecule | Name: Envelope glycoprotein gp41 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 17.357824 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: AVGLGAFILG FLGAAGSTMG AASMALTVQA RLLLSGIVQQ QNNLLRAPEA QQHMLQLTVW GIKQLQARVL AVERYLRDQQ LLGIWGCSG KIICCTNVPW NDSWSNKTIN EIWDNMTWMQ WEKEIDNYTQ HIYTLLEVSQ IQQEKNEQEL LELD UniProtKB: Envelope glycoprotein gp160 |
-Macromolecule #3: T-cell surface glycoprotein CD4
Macromolecule | Name: T-cell surface glycoprotein CD4 / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.039172 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: METDTLLLWV LLLWVPGSTG KKVVLGKKGD TVELTCTASQ KKSIQFHWKN SNQIKILGNQ GSFLTKGPSK LNDRADSRRS LWDQGNFPL IIKNLKIEDS DTYICEVEDQ KEEVQLLVFG LTANSDTHLL QGQSLTLTLE SPPGSSPSVQ CRSPRGKNIQ G GKTLSVSQ ...String: METDTLLLWV LLLWVPGSTG KKVVLGKKGD TVELTCTASQ KKSIQFHWKN SNQIKILGNQ GSFLTKGPSK LNDRADSRRS LWDQGNFPL IIKNLKIEDS DTYICEVEDQ KEEVQLLVFG LTANSDTHLL QGQSLTLTLE SPPGSSPSVQ CRSPRGKNIQ G GKTLSVSQ LELQDSGTWT CTVLQNQKKV EFKIDIVVLA GGSGHHHHHH UniProtKB: T-cell surface glycoprotein CD4 |
-Macromolecule #6: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 6 / Number of copies: 27 / Formula: NAG |
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Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Macromolecule #7: [3'-(5-methyl-1,3,4-oxadiazol-2-yl)[1,1'-biphenyl]-3-yl](piperidi...
Macromolecule | Name: [3'-(5-methyl-1,3,4-oxadiazol-2-yl)[1,1'-biphenyl]-3-yl](piperidin-1-yl)methanone type: ligand / ID: 7 / Number of copies: 3 / Formula: N07 |
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Molecular weight | Theoretical: 347.41 Da |
Chemical component information | ![]() ChemComp-N07: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 6 mg/mL | ||||||||||
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Buffer | pH: 7.4 Component:
Details: Detergent (LMNG) added shortly (<5 minutes) prior to grid freezing using an 8X concentrated stock. | ||||||||||
Grid | Model: C-flat-2/2 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 10 sec. | ||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 283 K / Instrument: FEI VITROBOT MARK IV | ||||||||||
Details | Complex of CD4- and 17b-bound B41 SOSIP was SEC purified and GO35 was diluted 1:100 into the complex and incubated for 1 hr prior to grid freezing. |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Number real images: 1285 / Average exposure time: 12.5 sec. / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.2 µm / Nominal defocus min: 0.6 µm / Nominal magnification: 29000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |