CSK23_ARATH Casein kinases are operationally defined by their preferential utilization of acidic proteins such as caseins as substrates. The alpha chain contains the catalytic site. May act as an ectokinase that phosphorylates several extracellular proteins (By similarity). Probable casein kinase II subunit alpha F21P24.14 333 At2g23080 MSKARVYTDVNVVRPKEYWDYESLVVQWGHQDDYEVVRKVGRGKYSEVFEGKNVNTNERCVIKILKPVKKKKIKREIKILQNLCGGPNIVKLYDIVRDEHSKTPSLVFEFVNSVDFKVLYPTLTDYDIRYYIYELLKALDFCHSQGIMHRDVKPHNVMIDHQLRKLRLIDWGLAEFYHPGKEYNVRVASRYFKGPELLVDLQDYDYSLDMWSLGCMFAGMIFRKEPFFYGHDNHDQLVKIAKVLGTNELDHYLNKYQLDLDPQLEALVGRHVPKPWSKFINADNQHLVSPEAIDFLDKLLQYDHQDRLTAREAMDHPYFAQVKAAESSRLRTQ At2g23080