Mutation detail:
| Mutation site | A388V |
| Virus | Influenzavirus A H1N1 |
Mutation level  |
Amino acid Level |
| Gene/protein/region type | HA |
| Gene ID | 23308115 |
| Country | - |
| Mutation type |
nonsynonymous mutation |
| Genotype/subtype/clade | - |
| Sample |
cell line |
| Variants | - |
| Viral reference sequence | FJ966082.1 |
| Drug/antibody/vaccine | NAbs -CR6261 resistant, NAbs CR9114 resistant, Nabs-FI6V3 resistant, NAbs-70-1F02 resistant, Nabs-C179 resistant, Nabs-CT149 resistant |
| Transmissibility |
- |
| Transmission mechanism | - |
| Pathogenicity |
- |
| Pathogenicity mechanism | - |
| Immune escape mutation | Yes |
| Immune escape mechanism | - |
| RT-PCR primers probes | - |
Protein detail:
| Protein name | Hemagglutinin |
| Uniprot protein ID | C3W627 |
| Protein length | 566 amino acids |
| Protein description | The HA protein is translated as an uncleaved HA0 precursor protein, folded as a trimer, and glycosylated and acylated. The HA protein binds to sialic acid-containing receptors on the cell surface, bringing about the attachment of the virus particle to the cell. This attachment induces virion internalization either through clathrin-dependent endocytosis or through clathrin- and caveolin-independent pathway. Plays a major role in the determination of host range restriction and virulence. Class I viral fusion protein. Responsible for penetration of the virus into the cell cytoplasm by mediating the fusion of the membrane of the endocytosed virus particle with the endosomal membrane. Low pH in endosomes induces an irreversible conformational change in HA2, releasing the fusion hydrophobic peptide. Several trimers are required to form a competent fusion pore. |
Literature information:
| Pubmed ID | 32601336 |
| Clinical information | No |
| Disease | - |
| Published year | 2021 |
| Journal | Nature Medicine |
| Title | Pre-existing immunity to influenza virus hemagglutinin stalk might drive selection for antibody-escape mutant viruses in a human challenge model |
| Author | Jae-Keun Park,Yongli Xiao,Mitchell D. Ramuta,Luz Angela Rosas,Sharon Fong |
| Evidence | The A388V mutation conferred resistance to some of the potent HA stalk broadly neutralizing monoclonal antibodies (bNAbs). |