6U0L

Asymmetrically open conformational state (Class I) of HIV-1 Env trimer BG505 SOSIP.664 in complex with sCD4 and E51 Fab


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.1 of the entry. See complete history


Literature

Asymmetric opening of HIV-1 Env bound to CD4 and a coreceptor-mimicking antibody.

Yang, Z.Wang, H.Liu, A.Z.Gristick, H.B.Bjorkman, P.J.

(2019) Nat Struct Mol Biol 26: 1167-1175

  • DOI: https://doi.org/10.1038/s41594-019-0344-5
  • Primary Citation of Related Structures:  
    6U0L, 6U0N

  • PubMed Abstract: 

    The human immunodeficiency virus (HIV-1) envelope (Env) glycoprotein, a (gp120-gp41) 3 trimer, mediates fusion of viral and host cell membranes after gp120 binding to host receptor CD4. Receptor binding triggers conformational changes allowing coreceptor (CCR5) recognition through CCR5's tyrosine-sulfated amino (N) terminus, release of the gp41 fusion peptide and fusion. We present 3.3 Å and 3.5 Å cryo-EM structures of E51, a tyrosine-sulfated coreceptor-mimicking antibody, complexed with a CD4-bound open HIV-1 native-like Env trimer. Two classes of asymmetric Env interact with E51, revealing tyrosine-sulfated interactions with gp120 mimicking CCR5 interactions, and two conformations of gp120-gp41 protomers (A and B protomers in AAB and ABB trimers) that differ in their degree of CD4-induced trimer opening and induction of changes to the fusion peptide. By integrating the new structural information with previous closed and open envelope trimer structures, we modeled the order of conformational changes on the path to coreceptor binding site exposure and subsequent viral-host cell membrane fusion.


  • Organizational Affiliation

    Division of Biology and Biological Engineering, California Institute of Technology, Pasadena CA, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Envelope glycoprotein gp120
A, B, C
481Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: env
UniProt
Find proteins for Q2N0S6 (Human immunodeficiency virus 1)
Explore Q2N0S6 
Go to UniProtKB:  Q2N0S6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ2N0S6
Glycosylation
Glycosylation Sites: 9
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
T-cell surface glycoprotein CD4
D, E, F
192Homo sapiensMutation(s): 0 
Gene Names: CD4
UniProt & NIH Common Fund Data Resources
Find proteins for P01730 (Homo sapiens)
Explore P01730 
Go to UniProtKB:  P01730
PHAROS:  P01730
GTEx:  ENSG00000010610 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01730
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
E51 Fab heavy chainG [auth H],
H [auth I],
K [auth P]
235Homo sapiensMutation(s): 0 
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
E51 Fab light chainI [auth J],
J [auth L],
L [auth Q]
213Homo sapiensMutation(s): 0 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
Envelope glycoprotein gp41M [auth X],
N [auth Y],
O [auth Z]
153Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: env
UniProt
Find proteins for Q2N0S6 (Human immunodeficiency virus 1)
Explore Q2N0S6 
Go to UniProtKB:  Q2N0S6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ2N0S6
Glycosylation
Glycosylation Sites: 1
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 6
MoleculeChains Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseP [auth G],
R [auth M],
S [auth N],
U [auth R]
2N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Entity ID: 7
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseQ [auth K],
V [auth S]
5N-Glycosylation
Glycosylation Resources
GlyTouCan:  G42227JK
GlyCosmos:  G42227JK
GlyGen:  G42227JK
Entity ID: 8
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[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-glucopyranoseT [auth O]7N-Glycosylation
Glycosylation Resources
GlyTouCan:  G07617FP
GlyCosmos:  G07617FP
GlyGen:  G07617FP
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
AA [auth A]
BA [auth A]
CA [auth B]
DA [auth B]
EA [auth B]
AA [auth A],
BA [auth A],
CA [auth B],
DA [auth B],
EA [auth B],
FA [auth B],
GA [auth B],
HA [auth C],
IA [auth C],
JA [auth C],
KA [auth C],
LA [auth C],
MA [auth C],
NA [auth C],
OA [auth C],
PA [auth C],
QA [auth X],
W [auth A],
X [auth A],
Y [auth A],
Z [auth A]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
TYS
Query on TYS
G [auth H],
H [auth I],
K [auth P]
L-PEPTIDE LINKINGC9 H11 N O6 STYR
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.30 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 StatesHIVRAD P01 P01AI10014 (P.J.B.)
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesP50 8 P50 AI150464-13 (P.J.B.)

Revision History  (Full details and data files)

  • Version 1.0: 2019-12-11
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2022-02-16
    Changes: Database references, Structure summary