Multiple amino acid (A) and nucleotide (B) sequence alignment of the FMRFamide precursor of Doryteuthis opalescens (Q9GSL0.1, AF303160.1), D. pealeii (B6E465.1, FJ205479.1), Idiosepius notoides (ACP39631.1, FJ896403.1), Sepia officinalis (P91889.1, Y11246.1), Sepiella japonica (KJ933411, KJ933411.1), Lymnaea stagnalis (AAA63280.1, M87479.2), in comparison with S. pharaonis which was noted by ▲. Residues identical in all seven sequences are boxed in black. Conservative substitutions are boxed in gray. The red box represents the initiation codon and the blue box represents the termination codon.