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Table 1 Encoded Proteins and Their Functions

Influenza A

Segment	Length (nucleotides)	Protein Name	Protein (Amino acids)	Function
1	2350	PB2	759	Cap recognition RNA synthesis
2	2350	PB1	757	RNA synthesis
3	2250	PA	716	RNA synthesis
4	1780	HA	566	Hemaggluttin, fusion, major surface antigen, sialic acid binding
5	1575	NP	498	Nuecleocapsid protein
6	1420	NA	454	Neurimindase
7	1050	M1	252	Matrix protein
	Spliced	M2	97	Ion channels
8	900	NS1	230	Nonstructural protein
	Spliced	NS2	121	Nucleaur export protein

Source: adapted from Strauss and Struass (2002, table 4.8, p148), ICTVdb

Table 2 Encoded Proteins and Function of Influenza C

Influenza C has only 7 segments, and has Hemagglutinin-esterase-fusion protein (HEF) instead of hemmagglutin (HA) or Neuriminidase (NA) on their surfaces

Influenza C

Segment	Length (nucleotides)	Protein Name	Protein (Amino acids)	Function
1	2365	PB2	774	Cap recognition RNA synthesis
2	2363	PB1	754	RNA synthesis
3	2183	PA	709	RNA synthesis
4	2073	HEF	655	Fusion, major surface antigen, sialic acid binding
5	1809	NP	565	Nuecleocapsid protein
6	1180	-	-	Matrix protein
	Spliced	M1	242	Ion channel??
	Internal initiation	CM2	139
7	934	N1	286	Nonstructural protein
	Spliced	N2	122	Nuclear export protein

Source: adapted from Strauss and Struass (2002, table 4.8, p148), ICTVdb

Translation