Figure 3.

Deduced amino acid sequences of the three short-wavelength opsins: PrUV, PrV, and PrB. Nucleotide sequences are available in the DNA Data Bank of Japan(accession numbers: PrUV, AB208673; PrV, AB208674; PrB, AB208675). The boxed lysine and glutamate residues correspond to the sites responsible for short-wavelength-absorbing characteristics (Salcedo et al., 2003). The boxed arrows indicate regions on which forward (UV1F, UV2F, B1F, B2F) and reverse (R) primers were designed. The lysine residue indicated by the black dot is the site for chromophore attachment.