Table 5.

Amino acid identities with chicken IGF2 (%)

AA means amino acids.

Species	Long signal peptide (62 amino acids)	Signal peptide (23 amino acids)	Mature IGF2 (68 amino acids)	E peptide (96 amino acids)
Turkey	None	96	100	100
Duck	a	91	100	56 (97 AA)
Zebra finch	None	87	99	88
Flycatcher	None	83	100	85 (90 AA)
Turtle	56 (59 AA)	65	94	71 (95 AA)
Anole lizard	None	61	91	67 (95 AA)
Frog	26 (55 AA)	52	85	43 (94 AA)
Human	<10 (80 AA)	30 (24 AA)	84 (67 AA)	34 (89 AA)

^a This is a poor-quality DNA sequence.