This tool offers the following four analytic methods:
- Sequence variation: nucleotide and protein sequence variation, antigenic sites in HA, and drug-resistant features in NA or MP(M2).
- Sequence homology: pairwise sequence homologies in the nucleotide and protein sequences
- N-linked Glycosylation: prediction of glycosylated residue
- Phylogenetic tree: molecular evolutionary tree of the sequence queries