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- EMDB-41569: Cryo-EM structure of HmAb64 scFv in complex with CNE40 SOSIP trimer -
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Open data
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Basic information
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Title | Cryo-EM structure of HmAb64 scFv in complex with CNE40 SOSIP trimer | |||||||||
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![]() | HIV / Env / glycoprotein / mAb / IMMUNE SYSTEM / IMMUNE SYSTEM-VIRAL PROTEIN complex | |||||||||
Function / homology | ![]() positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.74 Å | |||||||||
![]() | Chan K-W / Kong XP | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Human CD4-binding site antibody elicited by polyvalent DNA prime-protein boost vaccine neutralizes cross-clade tier-2-HIV strains. Authors: Shixia Wang / Kun-Wei Chan / Danlan Wei / Xiuwen Ma / Shuying Liu / Guangnan Hu / Saeyoung Park / Ruimin Pan / Ying Gu / Alexandra F Nazzari / Adam S Olia / Kai Xu / Bob C Lin / Mark K ...Authors: Shixia Wang / Kun-Wei Chan / Danlan Wei / Xiuwen Ma / Shuying Liu / Guangnan Hu / Saeyoung Park / Ruimin Pan / Ying Gu / Alexandra F Nazzari / Adam S Olia / Kai Xu / Bob C Lin / Mark K Louder / Krisha McKee / Nicole A Doria-Rose / David Montefiori / Michael S Seaman / Tongqing Zhou / Peter D Kwong / James Arthos / Xiang-Peng Kong / Shan Lu / ![]() Abstract: The vaccine elicitation of HIV tier-2-neutralization antibodies has been a challenge. Here, we report the isolation and characterization of a CD4-binding site (CD4bs) specific monoclonal antibody, ...The vaccine elicitation of HIV tier-2-neutralization antibodies has been a challenge. Here, we report the isolation and characterization of a CD4-binding site (CD4bs) specific monoclonal antibody, HmAb64, from a human volunteer immunized with a polyvalent DNA prime-protein boost HIV vaccine. HmAb64 is derived from heavy chain variable germline gene IGHV1-18 and light chain germline gene IGKV1-39. It has a third heavy chain complementarity-determining region (CDR H3) of 15 amino acids. On a cross-clade panel of 208 HIV-1 pseudo-virus strains, HmAb64 neutralized 20 (10%), including tier-2 strains from clades B, BC, C, and G. The cryo-EM structure of the antigen-binding fragment of HmAb64 in complex with a CNE40 SOSIP trimer revealed details of its recognition; HmAb64 uses both heavy and light CDR3s to recognize the CD4-binding loop, a critical component of the CD4bs. This study demonstrates that a gp120-based vaccine can elicit antibodies capable of tier 2-HIV neutralization. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 229.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 20.4 KB 20.4 KB | Display Display | ![]() |
Images | ![]() | 75.6 KB | ||
Filedesc metadata | ![]() | 6.7 KB | ||
Others | ![]() ![]() | 226.1 MB 226.1 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 746.3 KB | Display | ![]() |
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Full document | ![]() | 745.9 KB | Display | |
Data in XML | ![]() | 15.9 KB | Display | |
Data in CIF | ![]() | 18.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8tr3MC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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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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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.852 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_41569_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_41569_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : 3D structure of HmAb64 Fv in complex with CNE40 SOSIP trimer
Entire | Name: 3D structure of HmAb64 Fv in complex with CNE40 SOSIP trimer |
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Components |
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-Supramolecule #1: 3D structure of HmAb64 Fv in complex with CNE40 SOSIP trimer
Supramolecule | Name: 3D structure of HmAb64 Fv in complex with CNE40 SOSIP trimer type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4 |
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-Supramolecule #2: HmAb64 Fv
Supramolecule | Name: HmAb64 Fv / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #3-#4 |
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Source (natural) | Organism: ![]() |
-Supramolecule #3: CNE40 SOSIP trimer
Supramolecule | Name: CNE40 SOSIP trimer / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #1-#2 |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: CNE40 SOSIP Envelope glycoprotein gp120
Macromolecule | Name: CNE40 SOSIP Envelope glycoprotein gp120 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 55.018422 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: GNLWVTVYYG VPVWKEATTT LFCASDAKAY DTEVHNVWAT HACVPADPNP QEMLLKNVTE NFNMWKNEMV NQMHEDVISL WDQSLKPCV KLTPLCVTLN CTNVKINSTS NETCIDSGNN STCNETYKEM RNCSFNATTV VRDKQQKMYA LFYKLDIVPL N SGYKNSSD ...String: GNLWVTVYYG VPVWKEATTT LFCASDAKAY DTEVHNVWAT HACVPADPNP QEMLLKNVTE NFNMWKNEMV NQMHEDVISL WDQSLKPCV KLTPLCVTLN CTNVKINSTS NETCIDSGNN STCNETYKEM RNCSFNATTV VRDKQQKMYA LFYKLDIVPL N SGYKNSSD ETYRLINCNT SAITQACPKV SFDPIPIHYC TPAGYALLKC NNKTFNGTGP CNNVSTVQCT HGIKPVVSTQ LL LNGSLAE EEIIIRSENL TNNAKTIIVH LKEPVNITCE RPNNNTRKSI RIGPGQTFYA TGDIIGNIRE AHCNISRSQW NKT LQGVGE KLAELFPNKT IVFKNSSGGD LEITTHSFNC RGEFFYCNTT DLFNSTYWSN GTYITQSNSS SINITLPCRI KQII NMWQE VGRAIYAPPI AGQITCISNI TGLLLLRDGG KEANGTEIFR PGGGDMRDNW RSELYKYKVV EIKPLGVAPT KCRRR VVER RRRRR UniProtKB: Envelope glycoprotein gp160 |
-Macromolecule #2: CNE40 SOSIP Transmembrane protein gp41
Macromolecule | Name: CNE40 SOSIP Transmembrane protein gp41 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 17.205479 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: AVGIGAVFLG FLGAAGSTMG AASITLTVQA RQLLSGIVQQ QSNLLKAPEA QQHLLQLTVW GIKQLQTRVL AIERYLKDQQ LLGIWGCSG KLICCTAVPW NSSWSNKSQT EIWNNMTWMQ WDREINNYTD IIYRLLEESQ NQQENNEEDL LALD UniProtKB: Envelope glycoprotein gp160 |
-Macromolecule #3: HmAb64 Fv heavy chain
Macromolecule | Name: HmAb64 Fv heavy chain / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 13.745402 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: QVQLVQSGAE VKKPGASVKV SCKASGYTFT SYDITWVRQA PGQGLEWMGW ISAYNGDTNY AQRLQGRVTM TTDTSTSTAY MELRSLRSD DTAVYYCARA KHTVLVTAMR WFDPWGQGTL VTVSS |
-Macromolecule #4: HmAb64 Fv light chain
Macromolecule | Name: HmAb64 Fv light chain / type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 11.852093 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: DIQMTQSPSS LSASVGDRVT ITCRASQSIS NYLNWYQQKP GKAPKLLISA TSSLQSGVPS RFSGSGSGTD FTLTISSLQP DDFATYYCQ QSYSTPWTFG QGTKLEIKRT |
-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: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 2.0 mg/mL |
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Buffer | pH: 7.4 |
Grid | Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 56.76 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: 2.5 µm / Nominal defocus min: 0.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: PDB ENTRY PDB model - PDB ID: |
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Final reconstruction | Applied symmetry - Point group: C3 (3 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 3.74 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3.3.2) / Number images used: 316221 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |