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- EMDB-24362: Cryo-EM structure of M4008_N1 Fab in complex with BG505 DS-SOSIP.... -

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Basic information

Entry
Database: EMDB / ID: EMD-24362
TitleCryo-EM structure of M4008_N1 Fab in complex with BG505 DS-SOSIP.664 Env trimer
Map data
Sample
  • Complex: M4008_N1 Fab in complex with BG505 DS-SOSIP.664 Env trimer
    • Protein or peptide: Envelope glycoprotein gp160
    • Protein or peptide: HIV-1 Envelope Glycoprotein BG505 SOSIP.664 gp41
    • Protein or peptide: M4008_N1 Fab heavy chain
    • Protein or peptide: M4008_N1 Fab light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsHIV / Envelope / bNAb / Complex / IMMUNE SYSTEM
Function / homology
Function and homology information


positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / identical protein binding / membrane
Similarity search - Function
Envelope glycoprotein Gp160 / Retroviral envelope protein / Retroviral envelope protein GP41-like / Gp120 core superfamily / Envelope glycoprotein GP120 / Human immunodeficiency virus 1, envelope glycoprotein Gp120
Similarity search - Domain/homology
Envelope glycoprotein gp160
Similarity search - Component
Biological speciesHomo sapiens (human) / Human immunodeficiency virus 1
Methodsingle particle reconstruction / cryo EM / Resolution: 3.24 Å
AuthorsChan K-W / Kong XP
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01 AI145655 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01 AI122953 United States
CitationJournal: Nat Commun / Year: 2021
Title: A site of vulnerability at V3 crown defined by HIV-1 bNAb M4008_N1.
Authors: Kun-Wei Chan / Christina C Luo / Hong Lu / Xueling Wu / Xiang-Peng Kong /
Abstract: Identification of vulnerable sites defined by broadly neutralizing antibodies (bNAbs) on HIV-1 envelope (Env) is crucial for vaccine design, and we present here a vulnerable site defined by bNAb ...Identification of vulnerable sites defined by broadly neutralizing antibodies (bNAbs) on HIV-1 envelope (Env) is crucial for vaccine design, and we present here a vulnerable site defined by bNAb M4008_N1, which neutralizes about 40% of a tier-2 virus panel. A 3.2 Å resolution cryo-EM structure of M4008_N1 in complex with BG505 DS-SOSIP reveals a large, shallow protein epitope surface centered at the V3 crown of gp120 and surrounded by key glycans. M4008_N1 interacts with gp120 primarily through its hammerhead CDR H3 to form a β-sheet interaction with the V3 crown hairpin. This makes M4008_N1 compatible with the closed conformation of the prefusion Env trimer, and thus distinct from other known V3 crown mAbs. This mode of bNAb approaching the immunogenic V3 crown in the native Env trimer suggests a strategy for immunogen design targeting this site of vulnerability.
History
DepositionJul 1, 2021-
Header (metadata) releaseNov 17, 2021-
Map releaseNov 17, 2021-
UpdateNov 6, 2024-
Current statusNov 6, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.68
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by cylindrical radius
  • Surface level: 0.68
  • Imaged by UCSF Chimera
  • Download
  • Surface view with fitted model
  • Atomic models: PDB-7rai
  • Surface level: 0.68
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_24362.png

Downloads & links

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Map

FileDownload / File: emd_24362.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 300 pix.
= 314.4 Å		1.05 Å/pix.
x 300 pix.
= 314.4 Å		1.05 Å/pix.
x 300 pix.
= 314.4 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.048 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.68 / Movie #1: 0.68
Minimum - Maximum-2.1755233 - 3.8833616
Average (Standard dev.)0.0056926976 (±0.102660194)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 314.4 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0481.0481.048
M x/y/z300300300
origin x/y/z0.0000.0000.000
length x/y/z314.400314.400314.400
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ192192192
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS300300300
D min/max/mean-2.1763.8830.006

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Supplemental data

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Sample components

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Entire : M4008_N1 Fab in complex with BG505 DS-SOSIP.664 Env trimer

EntireName: M4008_N1 Fab in complex with BG505 DS-SOSIP.664 Env trimer
Components
  • Complex: M4008_N1 Fab in complex with BG505 DS-SOSIP.664 Env trimer
    • Protein or peptide: Envelope glycoprotein gp160
    • Protein or peptide: HIV-1 Envelope Glycoprotein BG505 SOSIP.664 gp41
    • Protein or peptide: M4008_N1 Fab heavy chain
    • Protein or peptide: M4008_N1 Fab light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: M4008_N1 Fab in complex with BG505 DS-SOSIP.664 Env trimer

SupramoleculeName: M4008_N1 Fab in complex with BG505 DS-SOSIP.664 Env trimer
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Envelope glycoprotein gp160

MacromoleculeName: Envelope glycoprotein gp160 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 53.300348 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: AENLWVTVYY GVPVWKDAET TLFCASDAKA YETEKHNVWA THACVPTDPN PQEIHLENVT EEFNMWKNNM VEQMHTDIIS LWDQSLKPC VKLTPLCVTL QCTNVTNNIT DDMRGELKNC SFNMTTELRD KKQKVYSLFY RLDVVQINEN QGNRSNNSNK E YRLINCNT ...String:
AENLWVTVYY GVPVWKDAET TLFCASDAKA YETEKHNVWA THACVPTDPN PQEIHLENVT EEFNMWKNNM VEQMHTDIIS LWDQSLKPC VKLTPLCVTL QCTNVTNNIT DDMRGELKNC SFNMTTELRD KKQKVYSLFY RLDVVQINEN QGNRSNNSNK E YRLINCNT SACTQACPKV SFEPIPIHYC APAGFAILKC KDKKFNGTGP CPSVSTVQCT HGIKPVVSTQ LLLNGSLAEE EV MIRSENI TNNAKNILVQ FNTPVQINCT RPNNNTRKSI RIGPGQAFYA TGDIIGDIRQ AHCNVSKATW NETLGKVVKQ LRK HFGNNT IIRFANSSGG DLEVTTHSFN CGGEFFYCNT SGLFNSTWIS NTSVQGSNST GSNDSITLPC RIKQIINMWQ RIGQ CMYAP PIQGVIRCVS NITGLILTRD GGSTNSTTET FRPGGGDMRD NWRSELYKYK VVKIEPLGVA PTRCKRRVVG R

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #2: HIV-1 Envelope Glycoprotein BG505 SOSIP.664 gp41

MacromoleculeName: HIV-1 Envelope Glycoprotein BG505 SOSIP.664 gp41 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 17.146482 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
AVGIGAVFLG FLGAAGSTMG AASMTLTVQA RNLLSGIVQQ QSNLLRAPEA QQHLLKLTVW GIKQLQARVL AVERYLRDQQ LLGIWGCSG KLICCTNVPW NSSWSNRNLS EIWDNMTWLQ WDKEISNYTQ IIYGLLEESQ NQQEKNEQDL LALD

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #3: M4008_N1 Fab heavy chain

MacromoleculeName: M4008_N1 Fab heavy chain / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.01666 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QSQLVQSGAE MKTSGSSVRV SCKDSGGFFP YAGFRWVRQA PGQGFEWMGG VIPADGTKHY APKFQARMKM TVVESSRTLY MELRSLTST DTATYFCARL QCAGFSCEMD SGPFDLWGQG TQVTVPSSGA SASTKGPSVF PLAPSSKSTS GGTAALGCLV K DYFPEPVT ...String:
QSQLVQSGAE MKTSGSSVRV SCKDSGGFFP YAGFRWVRQA PGQGFEWMGG VIPADGTKHY APKFQARMKM TVVESSRTLY MELRSLTST DTATYFCARL QCAGFSCEMD SGPFDLWGQG TQVTVPSSGA SASTKGPSVF PLAPSSKSTS GGTAALGCLV K DYFPEPVT VSWNSGALTS GVHTFPAVLQ SSGLYSLSSV VTVPSSSLGT QTYICNVNHK PSNTKVDKRV EPKSCDKTHT CP PCPAPEL LGGPSVFLFP QNPRKPS

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Macromolecule #4: M4008_N1 Fab light chain

MacromoleculeName: M4008_N1 Fab light chain / type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.628396 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: DIQMTQSPST VAAFVGGNVT LSCRTSQGVG NRLAWYQQKP GKPPRLLISR ASNRHGGVPA RFSGGGSGTI FTLTIKGLQS DDFATFFCQ QYYDSRETFG QGSRVMMEKI RTVAAPSVFI FPPSDEQLKS GTASVVCLLN NFYPREAKVQ WKVDNALQSG N SQESVTEQ ...String:
DIQMTQSPST VAAFVGGNVT LSCRTSQGVG NRLAWYQQKP GKPPRLLISR ASNRHGGVPA RFSGGGSGTI FTLTIKGLQS DDFATFFCQ QYYDSRETFG QGSRVMMEKI RTVAAPSVFI FPPSDEQLKS GTASVVCLLN NFYPREAKVQ WKVDNALQSG N SQESVTEQ DSKDSTYSLS STLTLSKADY EKHKVYACEV THQGLSSPVT KSFNRGEC

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Macromolecule #9: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 9 / Number of copies: 21 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 58.07 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionApplied symmetry - Point group: C3 (3 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 3.24 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 2.15.0) / Number images used: 281313
Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: NOT APPLICABLE

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Atomic model buiding 1

Initial model
PDB IDChain

5u1f

chain_id: A, source_name: PDB, initial_model_type: experimental model

5u1f

chain_id: B, source_name: PDB, initial_model_type: experimental model

4oaw

chain_id: B, source_name: PDB, initial_model_type: experimental model

4oaw

chain_id: A, source_name: PDB, initial_model_type: experimental model
Output model

PDB-7rai:
Cryo-EM structure of M4008_N1 Fab in complex with BG505 DS-SOSIP.664 Env trimer

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