Multiple alignment of amino acid sequences of PRL in A. melanopus (AEB00558) as compared to those of other teleosts. Other prolactin sequences from Epinephelus coioides (AAO11695), Acanthopagrus schlegeli (AAX21764), Pagrus major (BAE43854), Rhabdosargus sarba (ABB17072), Sparus aurata (AAC26852), Takifugu rubripes (NP_001072092), Oncorhynchus keta (CAA45407), Danio rerio (NP_852102), and Anguilla japonica (AAO17792) were aligned by using ClustalW. The signal peptide sequence is marked by a box. Pairs of cysteine residues are shaded in grey. Identical amino acids among proteins are indicated by asterisks.