Figure 12From: Higher polymerase activity of a human influenza virus enhances activation of the hemagglutinin-induced Raf/MEK/ERK signal cascadeComparison of the carboxy-terminal amino acid sequences of different HA subtypes. Dashes are inserted to give maximum sequence homology. The conserved cysteine residues serving as acylation (palmitoylation) sites are shown in bold face. The HA sequences of A/HK/218847/06 (H1N1) and A/HK/218449/06 (H3N2) are highlighted in red. TMD, transmembrane domain; CT, cytoplasmic tailBack to article page