Transcript expression of inward rectifier potassium channels of Kir2 subfamily in Arctic marine and freshwater fish species

Inward rectifier K + (Kir2) channels are critical for electrical excitability of cardiac myocytes. Here, we examine expression of Kir2 channels in the heart of three Gadiformes species, polar cod ( Boreogadus saida ) and navaga ( Eleginus nawaga ) of the Arctic Ocean and burbot ( Lota lota ) of the temperate lakes to find out the role of Kir2 channels in cardiac adaptation to cold. Five boreal freshwater species: brown trout ( Salmo trutta fario...