Alignment of ArCCK1 and ArCCK2 with other cholecystokinin (CCK)-type peptides. Accession numbers for the corresponding precursor proteins are: Arub, A. rubens CCK-type precursor [GenBank: KT601716]; Spur, S. purpuratus CCK-type precursor [GI:390355380]; Skow1, S. kowalevskii CCK-type precursor 1 [GI:585688033]; Skow2, S. kowalevskii CCK-type precursor 2 [GI:187061456]; Cint, C. intestinalis cionin precursor [GI:10799472]; Hsap_CCK-8, H. sapiens CCK precursor [GI:30582820]; Hsap_Gast-6, H. sapiens gastrin precursor [GI:47481291]; Ctel, C. teleta CCK-type precursor [GI:161296032]; Lgig1, L. gigantea CCK-type precursor 1 [GI:161296032]; Lgig2, L. gigantea CCK-type precursor 2 [GI:52414496]; Dmel_SK, D. melanogaster sulfakinin (SK) precursor [GI:386765036].