CATH Classification
| Level | CATH Code | Description | 
|---|---|---|
|   | 3 | Alpha Beta | 
|   | 3.90 | Alpha-Beta Complex | 
|   | 3.90.209 | Hemagglutinin (Ha1 Chain); Chain: A; domain 1 | 
|   | 3.90.209.20 | Haemagglutinin, alpha/beta domain, HA1 chain | 
Domain Context
CATH Clusters
| Superfamily | 3.90.209.20 | 
| Functional Family | Hemagglutinin | 
Enzyme Information
UniProtKB Entries (1)
| P03438 | HEMA_I000X Influenza A virus (A/X-31(H3N2)) Hemagglutinin | 
PDB Structure
| PDB | 1HGI | 
| External Links | |
| Method | X-RAY DIFFRACTION | 
| Organism | |
| Primary Citation | Binding of influenza virus hemagglutinin to analogs of its cell-surface receptor, sialic acid: analysis by proton nuclear magnetic resonance spectroscopy and X-ray crystallography. Biochemistry | 
