In mouse gastrocnemius muscle, there was no significant change in the protein expression of c‐jun‐N‐terminal kinase 2 (JNK2), insulin receptor substrate‐1 (IRS‐1), Akt, AS160, AMP‐activated protein kinase (AMPK), acetyl‐CoA‐carboxylase (ACC), glycogen synthase kinase‐3α/β (GSK3α/β), glycogen synthase (GS), glucose transporter 1 (GLUT1) and glucose transporter 4 (GLUT4) between wild‐type and JNK1 knockout (JNK1 KO) mice.