Figure 5
From: Convergent evolution of cysteine-rich proteins in feathers and hair
Amino acid sequence alignment of avian EDCRPs, lizard EDCRP and representative human cysteine-rich KRTAPs. Sequence similarity is indicated by the following symbols: “*”, conserved in 5/5 proteins; “:”, conserved in 4/5 proteins; “.”, conserved in 3/5 proteins. Color shading highlights the amino acid residues C, K, P and Q, which are assumed to be important for the function of the protein (see main text). Species: chicken (Gallus gallus), human (Homo sapiens), lizard (Anolis carolinensis), pigeon (Columba livia). KRTAP, keratin-associated protein.