ISDA

Deposition Date 2007-06-01

Release Date 2007-06-12

Last Version Date 2024-10-16

Entry Detail

PDB ID:

2Q5U

Keywords:

VIRAL PROTEIN

Title:

Crystal structure of IQN17

Biological Source:

Source Organism:

(Taxon ID: )

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.50 Å

R-Value Free:

0.29

R-Value Work:

0.24

R-Value Observed:

0.24

Space Group:

I 2 2 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Fusion protein between yeast variant GCN4 and HIVgp41
Gene (Uniprot):env
Chain IDs:A, B, C
Chain Length:46
Number of Molecules:3
Biological Source:

UniProt ID:A3F986

Ligand Molecules

Primary Citation

Inhibiting HIV Entry: Discovery of D-Peptide Inhibitors that Target the Gp41 Coiled-Coil Pocket

Eckert, D.M, Malashkevich, V.N, Hong, L.H, Carr, P.A, Kim, P.S, Eckert, D.M, Malashkevich, V.N, Kim, P.S, Chan, D.C, Fass, D, Berger, J.M, Kim, P.S.Show

Cell(Cambridge,Mass.) 99 103 105 (1999)

PMID: 10520998 DOI: 10.1016/S0092-8674(00)80066-5

Abstact

The HIV-1 gp41 protein promotes viral entry by mediating the fusion of viral and cellular membranes. A prominent pocket on the surface of a central trimeric coiled coil within gp41 was previously identified as a potential target for drugs that inhibit HIV-1 entry. We designed a peptide, IQN17, which properly presents this pocket. Utilizing IQN17 and mirror-image phage display, we identified cyclic, D-peptide inhibitors of HIV-1 infection that share a sequence motif. A 1.5 A cocrystal structure of IQN17 in complex with a D-peptide, and NMR studies, show that conserved residues of these inhibitors make intimate contact with the gp41 pocket. Our studies validate the pocket per se as a target for drug development. IQN17 and these D-peptide inhibitors are likely to be useful for development and identification of a new class of orally bioavailable anti-HIV drugs.

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Primary Citation of related structures