ISDA

Deposition Date 2018-02-14

Release Date 2019-02-13

Last Version Date 2024-10-23

Entry Detail

PDB ID:

6CFG

Keywords:

VIRAL PROTEIN

Title:

Crystal structure of the A/Vietnam/1203/2004 (H5N1) influenza virus hemagglutinin in complex with small molecule JNJ4796

Biological Source:

Source Organism:

Influenza A virus (A/Viet Nam/1203/2004(H5N1)) (Taxon ID: 284218)

Host Organism:

Trichoplusia ni

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.32 Å

R-Value Free:

0.24

R-Value Work:

0.20

R-Value Observed:

0.20

Space Group:

H 3 2

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Hemagglutinin
Gene (Uniprot):HA
Chain IDs:A
Chain Length:334
Number of Molecules:1
Biological Source:Influenza A virus (A/Viet Nam/1203/2004(H5N1))

UniProt ID:Q5EP31 Pfam ID:PF00509

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Hemagglutinin
Chain IDs:B
Chain Length:177
Number of Molecules:1
Biological Source:Influenza A virus (A/Viet Nam/1203/2004(H5N1))

UniProt ID:A8UDR1 Pfam ID:PF00509

Ligand Molecules

EZ7

NAG

PEG

Primary Citation

A small-molecule fusion inhibitor of influenza virus is orally active in mice.

van Dongen, M.J.P, Kadam, R.U, Juraszek, J, Lawson, E, Brandenburg, B, Schmitz, F, Schepens, W.B.G, Stoops, B, van Diepen, H.A, Jongeneelen, M, Tang, C, Vermond, J, van Eijgen-Obregoso Real, A, Blokland, S, Garg, D, Yu, W, Goutier, W, Lanckacker, E, Klap, J.M, Peeters, D.C.G, Wu, J, Buyck, C, Jonckers, T.H.M, Roymans, D, Roevens, P, Vogels, R, Koudstaal, W, Friesen, R.H.E, Raboisson, P, Dhanak, D, Goudsmit, J, Wilson, I.A.Show

Science 363 ? ? (2019)

PMID: 30846569 DOI: 10.1126/science.aar6221

Abstact

Recent characterization of broadly neutralizing antibodies (bnAbs) against influenza virus identified the conserved hemagglutinin (HA) stem as a target for development of universal vaccines and therapeutics. Although several stem bnAbs are being evaluated in clinical trials, antibodies are generally unsuited for oral delivery. Guided by structural knowledge of the interactions and mechanism of anti-stem bnAb CR6261, we selected and optimized small molecules that mimic the bnAb functionality. Our lead compound neutralizes influenza A group 1 viruses by inhibiting HA-mediated fusion in vitro, protects mice against lethal and sublethal influenza challenge after oral administration, and effectively neutralizes virus infection in reconstituted three-dimensional cell culture of fully differentiated human bronchial epithelial cells. Cocrystal structures with H1 and H5 HAs reveal that the lead compound recapitulates the bnAb hotspot interactions.

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