6OMT image
Deposition Date 2019-04-19
Release Date 2019-08-21
Last Version Date 2024-11-20
Entry Detail
PDB ID:
6OMT
Keywords:
Title:
HIV-1 capsid hexamer R18D mutant
Biological Source:
Source Organism:
Method Details:
Experimental Method:
Resolution:
2.05 Å
R-Value Free:
0.22
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 6
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:Capsid protein
Mutations:A14C, E45C, W184A, M185A, R18D
Chain IDs:A
Chain Length:232
Number of Molecules:1
Biological Source:Human immunodeficiency virus 1
Primary Citation
FEZ1 Is Recruited to a Conserved Cofactor Site on Capsid to Promote HIV-1 Trafficking.
Cell Rep 28 2373 ? (2019)
PMID: 31422020 DOI: 10.1016/j.celrep.2019.07.079

Abstact

HIV-1 uses the microtubule network to traffic the viral capsid core toward the nucleus. Viral nuclear trafficking and infectivity require the kinesin-1 adaptor protein FEZ1. Here, we demonstrate that FEZ1 directly interacts with the HIV-1 capsid and specifically binds capsid protein (CA) hexamers. FEZ1 contains multiple acidic, poly-glutamate stretches that interact with the positively charged central pore of CA hexamers. The FEZ1-capsid interaction directly competes with nucleotides and inositol hexaphosphate (IP6) that bind at the same location. In addition, all-atom molecular dynamic (MD) simulations establish the molecular details of FEZ1-capsid interactions. Functionally, mutation of the FEZ1 capsid-interacting residues significantly reduces trafficking of HIV-1 particles toward the nucleus and early infection. These findings support a model in which the central capsid hexamer pore is a general HIV-1 cofactor-binding hub and FEZ1 serves as a unique CA hexamer pattern sensor to recognize this site and promote capsid trafficking in the cell.

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