ISDA

Entry Detail

PDB ID:

7L6O

EMDB ID:

EMD-23124

Keywords:

VIRAL PROTEIN

Title:

Cryo-EM structure of HIV-1 Env CH848.3.D0949.10.17chim.6R.DS.SOSIP.664

Biological Source:

Source Organism:

Human immunodeficiency virus 1

Host Organism:

Homo sapiens

PDB Version:

Deposition Date:

2020-12-23

Release Date:

2021-04-14

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.90 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:CH848.3.D0949.10.17chim.6R.DS.SOSIP.664 - gp120
Mutations:CH848.3.D0949.10.17chim.6R.DS.SOSIP.664
Chain IDs:A (auth: a), C (auth: c), E (auth: e)
Chain Length:466
Number of Molecules:3
Biological Source:Human immunodeficiency virus 1

UniProt ID:A0A1W6IPB2 Pfam ID:PF00516

Protein Blast

Polymer Type:polypeptide(L)
Description:CH848.3.D0949.10.17chim.6R.DS.SOSIP.664 - gp41
Chain IDs:B (auth: b), D (auth: d), F (auth: f)
Chain Length:146
Number of Molecules:3
Biological Source:Human immunodeficiency virus 1

UniProt ID:Q2N0S6 Pfam ID:PF00517

Ligand Molecules

NAG

Primary Citation

Fab-dimerized glycan-reactive antibodies are a structural category of natural antibodies.

Williams, W.B, Meyerhoff, R.R, Edwards, R.J, Li, H, Manne, K, Nicely, N.I, Henderson, R, Zhou, Y, Janowska, K, Mansouri, K, Gobeil, S, Evangelous, T, Hora, B, Berry, M, Abuahmad, A.Y, Sprenz, J, Deyton, M, Stalls, V, Kopp, M, Hsu, A.L, Borgnia, M.J, Stewart-Jones, G.B.E, Lee, M.S, Bronkema, N, Moody, M.A, Wiehe, K, Bradley, T, Alam, S.M, Parks, R.J, Foulger, A, Oguin, T, Sempowski, G.D, Bonsignori, M, LaBranche, C.C, Montefiori, D.C, Seaman, M, Santra, S, Perfect, J, Francica, J.R, Lynn, G.M, Aussedat, B, Walkowicz, W.E, Laga, R, Kelsoe, G, Saunders, K.O, Fera, D, Kwong, P.D, Seder, R.A, Bartesaghi, A, Shaw, G.M, Acharya, P, Haynes, B.F, Acharya, P, Williams, W, Henderson, R, Janowska, K, Manne, K, Parks, R, Deyton, M, Sprenz, J, Stalls, V, Kopp, M, Mansouri, K, Edwards, R.J, Meyerhoff, R.R, Oguin, T, Sempowski, G, Saunders, K, Haynes, B.F.Show

Cell 184 2955 ? (2021)

PMID: 34019795 DOI: 10.1016/j.cell.2021.04.042

Abstact

Natural antibodies (Abs) can target host glycans on the surface of pathogens. We studied the evolution of glycan-reactive B cells of rhesus macaques and humans using glycosylated HIV-1 envelope (Env) as a model antigen. 2G12 is a broadly neutralizing Ab (bnAb) that targets a conserved glycan patch on Env of geographically diverse HIV-1 strains using a unique heavy-chain (VH) domain-swapped architecture that results in fragment antigen-binding (Fab) dimerization. Here, we describe HIV-1 Env Fab-dimerized glycan (FDG)-reactive bnAbs without VH-swapped domains from simian-human immunodeficiency virus (SHIV)-infected macaques. FDG Abs also recognized cell-surface glycans on diverse pathogens, including yeast and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike. FDG precursors were expanded by glycan-bearing immunogens in macaques and were abundant in HIV-1-naive humans. Moreover, FDG precursors were predominately mutated IgM+IgD+CD27+, thus suggesting that they originated from a pool of antigen-experienced IgM+ or marginal zone B cells.

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Primary Citation of related structures