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. 2016 Aug 8;16:380. doi: 10.1186/s12879-016-1738-1

Fig. 2.

Fig. 2

Fluctuation of the N-linked glycosylation-associated amino acid residue 144 in the globular head of hemagglutinin (HA). To analyze the characteristic features of the potential N-linked glycosylation at residue 144 of H3N2 HA globular head, we performed database search using the Influenza Virus Resource of NCBI (http://www.ncbi.nlm.nih.gov/genomes/FLU/FLU.html). There were frequent longitudinal alterations of the amino acid residue 144 of HA, and the dominant virus strain was frequently replaced. a New York (USA) b Australia, Italy and Japan