Species in FASTA file and MSA:

Hsa = Homo sapiens (human)

Cin = Ciona instestinalis (non-vertebrate chordate, tunicate)

Spu = Strongylocentratus purpuratus (purple sea urchin)

Cel = Caenorhabditis elegans (free-living nematode)

Dme = Drosophila melanogaster (fruit fly)

Lan = Lingula anatina (brachiopod)

Nve = Nematostella vectensis (cnidarian)

Tad = Trichoplax adhaerens (basal metazoan - placozoan)