(Danio rerio
MxD and MxF sequences are not included due to just partial sequences available). Maximum-likelihood phylogenetic tree generated from a MAFT alignment and MEGA 5.1 program. Haliotis discus discus Mx was employed as the outgroup. The bar indicates the distance. CiMx1, CiMx2 and CiMx3 were marked with triangle (▴), diamond (♦) and circle (•), respectively. The protein IDs are as follows: Ctenopharyngodon idella Mx1 ADU33870, Mx2 AAQ95584, Mx3 ADZ44601; Carassius auratus Mx1 AAP68828, Mx2 AAP68827; Danio rerio MxA NP_891987, MxB Q800G8, MxC NP_001007285, MxE NP_878287, MxG CAD67761; Dicentrarchus labrax Mx AAR99718; Epinephelus fuscoguttatus Mx ADE80885; Epinephelus coioides Mx1 ABD95979, Mx2 ABD95982; Gobiocypris rarus Mx ABL61237; Gallus gallus Mx CAA80686; Homo sapiens Mx1 NP_001171517, Mx2 NP_002454; Hippoglossus hippoglossus Mx AAF66055; Ictalurus punctatus Mx1 Q7T2P0, Mx2 AAY33864; Lates calcarifer Mx AAW22002; Larimichthys crocea Mx ABJ56003; Mus musculus Mx1 NP_034976, Mx2 NP_038634; Oplegnathus fasciatus Mx1 ACF75866, Mx2 ACF75867, Mx3 ACF75868; Oncorhynchus mykiss Mx1 AAA87839, Mx2 AAC60214, Mx3 AAC60215; Paralichthys olivaceus Mx BAC76769; Scophthalmus maximus Mx1 AAT57877, Mx2 AAT57878; Sparus aurata Mx1 ACK99554, Mx2 ACK99553, Mx3 ACN22085; Salmo salar Mx1 AAB40994, Mx2 AAB40995, Mx3 AAB40996; Solea senegalensis Mx AAV49303; Siniperca chuatsi Mx AAQ91382; Takifugu rubripes Mx AAO37934; Haliotis discus discus Mx ABI53802.