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- EMDB-20260: HIV Env 16055 NFL TD 2CC+ in complex with antibody 1C2 fragment a... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-20260 | |||||||||||||||
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Title | HIV Env 16055 NFL TD 2CC+ in complex with antibody 1C2 fragment antigen binding | |||||||||||||||
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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 / structural molecule activity / virion membrane / plasma membrane Similarity search - Function | |||||||||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.94 Å | |||||||||||||||
![]() | Ozorowski G / Torres JL / Ward AB | |||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Vaccination with Glycan-Modified HIV NFL Envelope Trimer-Liposomes Elicits Broadly Neutralizing Antibodies to Multiple Sites of Vulnerability. Authors: Viktoriya Dubrovskaya / Karen Tran / Gabriel Ozorowski / Javier Guenaga / Richard Wilson / Shridhar Bale / Christopher A Cottrell / Hannah L Turner / Gemma Seabright / Sijy O'Dell / Jonathan ...Authors: Viktoriya Dubrovskaya / Karen Tran / Gabriel Ozorowski / Javier Guenaga / Richard Wilson / Shridhar Bale / Christopher A Cottrell / Hannah L Turner / Gemma Seabright / Sijy O'Dell / Jonathan L Torres / Lifei Yang / Yu Feng / Daniel P Leaman / Néstor Vázquez Bernat / Tyler Liban / Mark Louder / Krisha McKee / Robert T Bailer / Arlette Movsesyan / Nicole A Doria-Rose / Marie Pancera / Gunilla B Karlsson Hedestam / Michael B Zwick / Max Crispin / John R Mascola / Andrew B Ward / Richard T Wyatt / ![]() ![]() ![]() Abstract: The elicitation of broadly neutralizing antibodies (bNAbs) against the HIV-1 envelope glycoprotein (Env) trimer remains a major vaccine challenge. Most cross-conserved protein determinants are ...The elicitation of broadly neutralizing antibodies (bNAbs) against the HIV-1 envelope glycoprotein (Env) trimer remains a major vaccine challenge. Most cross-conserved protein determinants are occluded by self-N-glycan shielding, limiting B cell recognition of the underlying polypeptide surface. The exceptions to the contiguous glycan shield include the conserved receptor CD4 binding site (CD4bs) and glycoprotein (gp)41 elements proximal to the furin cleavage site. Accordingly, we performed heterologous trimer-liposome prime:boosting in rabbits to drive B cells specific for cross-conserved sites. To preferentially expose the CD4bs to B cells, we eliminated proximal N-glycans while maintaining the native-like state of the cleavage-independent NFL trimers, followed by gradual N-glycan restoration coupled with heterologous boosting. This approach successfully elicited CD4bs-directed, cross-neutralizing Abs, including one targeting a unique glycan-protein epitope and a bNAb (87% breadth) directed to the gp120:gp41 interface, both resolved by high-resolution cryoelectron microscopy. This study provides proof-of-principle immunogenicity toward eliciting bNAbs by vaccination. | |||||||||||||||
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 | ![]() | 85.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 23 KB 23 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 10.3 KB | Display | ![]() |
Images | ![]() | 182.1 KB | ||
Masks | ![]() | 91.1 MB | ![]() | |
Others | ![]() ![]() | 71.3 MB 71.3 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 810.9 KB | Display | ![]() |
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Full document | ![]() | 810.5 KB | Display | |
Data in XML | ![]() | 17.3 KB | Display | |
Data in CIF | ![]() | 22.2 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6p65MC ![]() 6p62C ![]() 6pehC 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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.15 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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Projections & Slices |
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Density Histograms |
-Half map: half map 1
File | emd_20260_half_map_1.map | ||||||||||||
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Annotation | half map 1 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: half map 2
File | emd_20260_half_map_2.map | ||||||||||||
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Annotation | half map 2 | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : HIV Env 16055 NFL TD 2CC+ in complex with antibody 1C2 fragment a...
Entire | Name: HIV Env 16055 NFL TD 2CC+ in complex with antibody 1C2 fragment antigen binding |
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Components |
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-Supramolecule #1: HIV Env 16055 NFL TD 2CC+ in complex with antibody 1C2 fragment a...
Supramolecule | Name: HIV Env 16055 NFL TD 2CC+ in complex with antibody 1C2 fragment antigen binding type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 570 KDa |
-Macromolecule #1: HIV Env 16055 NFL TD 2CC+
Macromolecule | Name: HIV Env 16055 NFL TD 2CC+ / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 75.630539 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MPMGSLQPLA TLYLLGMLVA SVLANGNLWV TVYYGVPVWK DAETTLFCAS DAKAYEKEKH NVWATHACVP TDPNPQEMVL ENVTENFNM WKNDMVEQMH TDVISLWDQS LKPCVKLTPL CVTLECRQVN TTNATSSVNV TNGEEIKNCS FNATTELRDK K QKVYALFY ...String: MPMGSLQPLA TLYLLGMLVA SVLANGNLWV TVYYGVPVWK DAETTLFCAS DAKAYEKEKH NVWATHACVP TDPNPQEMVL ENVTENFNM WKNDMVEQMH TDVISLWDQS LKPCVKLTPL CVTLECRQVN TTNATSSVNV TNGEEIKNCS FNATTELRDK K QKVYALFY RLDIVPLEEE RKGNSSKYRL INCNTSACTQ ACPKVTFDPI PIHYCAPAGY AILKCNNKTF NGTGPCNNVS TV QCTHGIK PVVSTQLLLN GSLAEGEIII RSENLTNNVK TIIVHLNESV EIVCTRPNNY TRKSIRIGPG QTFYATGDII GNI RQAYCN ISKDDWIRTL QRVGKKLAEH FPRRIINFTS PAGGDLEITT HSFNCRGEFF YCNTSSLFNS TYNPNDTNSN SSSS NSSLD ITIPCRIKQI INMWQRVGQC MYAPPIEGNI TCKSNITGLL LVRDGGVESN ETEIFRPGGG DMRNNWRSEL YKYKV VEIK PLGIAPTRCK RRVVEGGGGS GGGGSDDDDK AVGLGAVRRG FLGAAGSTMG AASITLTVQA RQLLSGIVQQ QSNLLK APE AQQHLLQLGV WGIKQLQTRV LAIERYLKDQ QLLGIWGCSG KLICTTAVPW NSSWSNKSHD EIWGNMTWMQ WDREIGN YT NTIYRLLEDS QNQQEQNEKD LLACDGGGGS HHHHHHHH |
-Macromolecule #2: Rabbit antibody 1C2 heavy chain fragment antigen binding
Macromolecule | Name: Rabbit antibody 1C2 heavy chain fragment antigen binding type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 27.476072 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MYRMQLLSCI ALSLALVTNS QCQSLEESGG DLVKPGASLT LTCTASGFSF GWNDYMSWVR QAPGKGLEWI GCIYAGSTRS TYYANWAKG RLTISKTSST AVTLQMTSLT AADTATYFCA RGAVTYDGLG GAYLKHFNLW GPGTLVTVSS GQPKAPSVFP L APCCGDTP ...String: MYRMQLLSCI ALSLALVTNS QCQSLEESGG DLVKPGASLT LTCTASGFSF GWNDYMSWVR QAPGKGLEWI GCIYAGSTRS TYYANWAKG RLTISKTSST AVTLQMTSLT AADTATYFCA RGAVTYDGLG GAYLKHFNLW GPGTLVTVSS GQPKAPSVFP L APCCGDTP SSTVTLGCLV KGYLPEPVTV TWNSGTLTNG VRTFPSVRQS SGLYSLSSVV SVTSSSQPVT CNVAHPATNT KV DKTVAPS TCSKHHHHHH HH |
-Macromolecule #3: Rabbit antibody 1C2 kappa chain
Macromolecule | Name: Rabbit antibody 1C2 kappa chain / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 25.041023 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MYRMQLLSCI ALSLALVTNS AIKMTQTPSS VSAAVGGTVT VNCRASEDIE SYLAWYQQKP GQPPKLLIYD TSKLASGVPS RFKGSGSGT QFALTISGVQ CDDAATYYCL YGYISSDRID FGFGGGTELV VKGDPVAPSV LIFPPAADQV ATGTVTIVCV A NKYFPDVT ...String: MYRMQLLSCI ALSLALVTNS AIKMTQTPSS VSAAVGGTVT VNCRASEDIE SYLAWYQQKP GQPPKLLIYD TSKLASGVPS RFKGSGSGT QFALTISGVQ CDDAATYYCL YGYISSDRID FGFGGGTELV VKGDPVAPSV LIFPPAADQV ATGTVTIVCV A NKYFPDVT VTWEVDGTTQ TTGIENSKTP QNSADCTYNL SSTLTLTSTQ YNSHKEYTCK VTQGTTSVVQ SFNRGDC |
-Macromolecule #8: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 8 / Number of copies: 21 / 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 | 6 mg/mL | ||||||||
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Buffer | pH: 7.4 Component:
Details: DDM added to sample shortly (< 5 minutes) before vitrification | ||||||||
Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING | ||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 283 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TALOS ARCTICA |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Number real images: 1690 / Average exposure time: 12.5 sec. / Average electron dose: 48.0 e/Å2 |
Electron beam | Acceleration voltage: 200 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: 0.7 µm / Nominal magnification: 36000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |