4P6Z image
Deposition Date 2014-03-25
Release Date 2014-05-21
Last Version Date 2023-12-27
Entry Detail
PDB ID:
4P6Z
Title:
Crystal structure of the human BST2 cytoplasmic domain and the HIV-1 Vpu cytoplasmic domain bound to the clathrin adaptor protein complex 1 (AP1) core
Biological Source:
Host Organism:
Method Details:
Experimental Method:
Resolution:
3.00 Å
R-Value Free:
0.22
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 43
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:AP-1 complex subunit beta-1
Gene (Uniprot):AP1B1
Mutations:T431A, E476K
Chain IDs:D (auth: B)
Chain Length:600
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:AP-1 complex subunit gamma-1
Gene (Uniprot):Ap1g1
Chain IDs:A (auth: G)
Chain Length:627
Number of Molecules:1
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Molecule:AP-1 complex subunit mu-1
Gene (Uniprot):Ap1m1
Chain IDs:C (auth: M)
Chain Length:423
Number of Molecules:1
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Molecule:AP-1 complex subunit sigma-1A
Gene (Uniprot):AP1S1
Mutations:Q11R
Chain IDs:B (auth: S)
Chain Length:158
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Bone marrow stromal antigen 2
Gene (Uniprot):BST2
Chain IDs:F (auth: T)
Chain Length:25
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Molecule:Protein Vpu
Gene (Uniprot):vpu
Chain IDs:E (auth: V)
Chain Length:63
Number of Molecules:1
Biological Source:Human immunodeficiency virus type 1 group M subtype B
Primary Citation
Structural basis of HIV-1 Vpu-mediated BST2 antagonism via hijacking of the clathrin adaptor protein complex 1.
Elife 3 e02362 e02362 (2014)
PMID: 24843023 DOI: 10.7554/eLife.02362

Abstact

BST2/tetherin, an antiviral restriction factor, inhibits the release of enveloped viruses from the cell surface. Human immunodeficiency virus-1 (HIV-1) antagonizes BST2 through viral protein u (Vpu), which downregulates BST2 from the cell surface. We report the crystal structure of a protein complex containing Vpu and BST2 cytoplasmic domains and the core of the clathrin adaptor protein complex 1 (AP1). This, together with our biochemical and functional validations, reveals how Vpu hijacks the AP1-dependent membrane trafficking pathways to mistraffick BST2. Vpu mimics a canonical acidic dileucine-sorting motif to bind AP1 in the cytosol, while simultaneously interacting with BST2 in the membrane. These interactions enable Vpu to build on an intrinsic interaction between BST2 and AP1, presumably causing the observed retention of BST2 in juxtanuclear endosomes and stimulating its degradation in lysosomes. The ability of Vpu to hijack AP-dependent trafficking pathways suggests a potential common theme for Vpu-mediated downregulation of host proteins.DOI: http://dx.doi.org/10.7554/eLife.02362.001.

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