3086723 MtCK mitochondrial creatine kinase 50 3045544 Mi-CK mitochondrial creatine kinase 45 3045554 MiCK mitochondrial creatine kinase 2 3086730 Mt-CK mitochondrial creatine kinase 2 1224443 mCK mitochondrial creatine kinase 2 2896149 mit-CK mitochondrial creatine kinase 2