Fig. 2

Sequence analysis of OMP. Alignment of amino acid sequences was constructed by ClustalW2. Colors indicate OMP subgroups: blue, teleost OMP1; red, teleost OMP2; purple, gar OMP; black, tetrapod OMP. Hyphens indicate gaps. Light characters indicate conserved amino acids among homologs. Vertical dashed line is the junction of OMP2 exon 1 and exon 2. Secondary structure is based on Smith et al. [35]. OMP has two α-helical regions and eight β-pleated sheets, as shown in the structure below the sequences