5XRT

Crystal structure of A/Minnesota/11/2010 (H3N2) influenza virus hemagglutinin

Summary for 5XRT

• Entry DOI: 10.2210/pdb5xrt/pdb
• Related: 5w42 5xrq 5xrs
• Descriptor: Hemagglutinin, alpha-D-mannopyranose-(1-3)-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-glucopyranose, 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose, ... (16 entities in total)
• Functional Keywords: influenza virus, hemagglutinin, receptor binding, antigen protein, viral protein
• Biological source: Influenza A virus (A/swine/Minnesota/A01134337/2010(H3N2)); More
• Total number of polymer chains: 8
• Total formula weight: 246790.59

Authors

Zhang, H.,Wilson, I.A. (deposition date: 2017-06-09, release date: 2018-07-25, Last modification date: 2023-10-18)

Primary citation

Bangaru, S.,Zhang, H.,Gilchuk, I.M.,Voss, T.G.,Irving, R.P.,Gilchuk, P.,Matta, P.,Zhu, X.,Lang, S.,Nieusma, T.,Richt, J.A.,Albrecht, R.A.,Vanderven, H.A.,Bombardi, R.,Kent, S.J.,Ward, A.B.,Wilson, I.A.,Crowe, J.E.
A multifunctional human monoclonal neutralizing antibody that targets a unique conserved epitope on influenza HA.
Nat Commun, 9:2669-2669, 2018

PubMed Abstract: The high rate of antigenic drift in seasonal influenza viruses necessitates frequent changes in vaccine composition. Recent seasonal H3 vaccines do not protect against swine-origin H3N2 variant (H3N2v) strains that recently have caused severe human infections. Here, we report a human V1-69 gene-encoded monoclonal antibody (mAb) designated H3v-47 that exhibits potent cross-reactive neutralization activity against human and swine H3N2 viruses that circulated since 1989. The crystal structure and electron microscopy reconstruction of H3v-47 Fab with the H3N2v hemagglutinin (HA) identify a unique epitope spanning the vestigial esterase and receptor-binding subdomains that is distinct from that of any known neutralizing antibody for influenza A H3 viruses. MAb H3v-47 functions largely by blocking viral egress from infected cells. Interestingly, H3v-47 also engages Fcγ receptor and mediates antibody dependent cellular cytotoxicity (ADCC). This newly identified conserved epitope can be used in design of novel immunogens for development of broadly protective H3 vaccines.

PubMed: 29991715
DOI: 10.1038/s41467-018-04704-9

Experimental method

X-RAY DIFFRACTION (3.15 Å)