6VKN

BG505 SOSIP.v5.2.N241.N289 in complex with rhesus macaque Fab RM19R


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Targeting HIV Env immunogens to B cell follicles in nonhuman primates through immune complex or protein nanoparticle formulations.

Martin, J.T.Cottrell, C.A.Antanasijevic, A.Carnathan, D.G.Cossette, B.J.Enemuo, C.A.Gebru, E.H.Choe, Y.Viviano, F.Fischinger, S.Tokatlian, T.Cirelli, K.M.Ueda, G.Copps, J.Schiffner, T.Menis, S.Alter, G.Schief, W.R.Crotty, S.King, N.P.Baker, D.Silvestri, G.Ward, A.B.Irvine, D.J.

(2020) NPJ Vaccines 5: 72-72

  • DOI: 10.1038/s41541-020-00223-1
  • Primary Citation of Related Structures:  
    6VL5, 6VL6, 6VKN

  • PubMed Abstract: 
  • Following immunization, high-affinity antibody responses develop within germinal centers (GCs), specialized sites within follicles of the lymph node (LN) where B cells proliferate and undergo somatic hypermutation. Antigen availability within GCs is ...

    Following immunization, high-affinity antibody responses develop within germinal centers (GCs), specialized sites within follicles of the lymph node (LN) where B cells proliferate and undergo somatic hypermutation. Antigen availability within GCs is important, as B cells must acquire and present antigen to follicular helper T cells to drive this process. However, recombinant protein immunogens such as soluble human immunodeficiency virus (HIV) envelope (Env) trimers do not efficiently accumulate in follicles following traditional immunization. Here, we demonstrate two strategies to concentrate HIV Env immunogens in follicles, via the formation of immune complexes (ICs) or by employing self-assembling protein nanoparticles for multivalent display of Env antigens. Using rhesus macaques, we show that within a few days following immunization, free trimers were present in a diffuse pattern in draining LNs, while trimer ICs and Env nanoparticles accumulated in B cell follicles. Whole LN imaging strikingly revealed that ICs and trimer nanoparticles concentrated in as many as 500 follicles in a single LN within two days after immunization. Imaging of LNs collected seven days postimmunization showed that Env nanoparticles persisted on follicular dendritic cells in the light zone of nascent GCs. These findings suggest that the form of antigen administered in vaccination can dramatically impact localization in lymphoid tissues and provides a new rationale for the enhanced immune responses observed following immunization with ICs or nanoparticles.


    Organizational Affiliation

    Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
RM19R Heavy ChainG, H, I121Macaca mulattaMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Envelope glycoprotein gp160A, C, D475Human immunodeficiency virus 1Mutation(s): 11 
Gene Names: env
Find proteins for Q2N0S6 (Human immunodeficiency virus 1)
Explore Q2N0S6 
Go to UniProtKB:  Q2N0S6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
BG505 SOSIPv5.2 gp41B, E, F153Human immunodeficiency virus 1Mutation(s): 3 
Gene Names: env
Find proteins for Q2N0S6 (Human immunodeficiency virus 1)
Explore Q2N0S6 
Go to UniProtKB:  Q2N0S6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
RM19R Kappa Light ChainJ, K, L107Macaca mulattaMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 5
MoleculeChainsChain Length2D Diagram Glycosylation
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
M, N, O, P, R, T, U, V, W, X, Z, b, c, d, e, f, h, j
2 N-Glycosylation
Entity ID: 6
MoleculeChainsChain Length2D Diagram Glycosylation
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
Q, Y, g
6 N-Glycosylation
Entity ID: 7
MoleculeChainsChain Length2D Diagram Glycosylation
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose
S, a, i
3 N-Glycosylation
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download CCD File 
A, B, C, D, E, F
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.70 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesF31 Al131873
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesUM1 AI144462
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesUM1 AI100663

Revision History 

  • Version 1.0: 2020-08-12
    Type: Initial release
  • Version 1.1: 2020-09-02
    Changes: Database references