Fig. 4From: Evolution and expression of the phosphodiesterase 6 genes unveils vertebrate novelty to control photosensitivityAlignment of the human and zebrafish PDE6 inhibitory subunit amino acid sequences. The alignment was made using ClustalWS and manually curated. Black boxes represent the residues necessary for the function indicated by the different colours. Information about the function of different regions was retrieved from Fig. 7 in [12]Back to article page