Table I.

Primary Antibodies Used

Antigen	Description of Immunogen	Source, host species, catalog No., clone or lot No., RRID	Concentration used (μg/ml)	Primary antibody blocking solution
β-Actin	C-terminal actin fragment: Ser-Gly-Pro-Ser-Ile-Val-His-Arg-Lys-Cys-Phe	Sigma-Aldrich (St. Louis, MO), rabbit polyclonal, A2066, AB_476693	0.2	3% Nonfat rrilk-PBS 0.1% Tween-20
pERK1/2	A synthetic phosphopeptide corresponding to residues surrounding Thr202/Tyr204 of human p44 MAP kinase	Cell Signaling Technology (Beverly, MA), rabbit polyclonal, 9101S, lot No. 28, AB_331646	1	3% Nonfat milk-PBS 0.1% Tween-20
ERK1/2	A synthetic peptide corresponding to a sequence in the C-terminus of rat p44 MAP Kinase	Cell Signaling Technology, rabbit polyclonal, 9102S, lot No. 23, AB_10695746	0.5	3% Nonfat milk-PBS 0.1% Tween-20
pJNK	A synthetic phosphopeptide corresponding to residues surrounding Thr183/Tyr185 of human SAPK/JNK.	Cell Signaling Technology, rabbit polyclonal, 9251L, lot No. 21, AB_2140557	1	3% Nonfat milk-PBS 0.1% Tween-20
JNK	A recombinant human JNK2 protein	Cell Signaling Technology, rabbit polyclonal, 9252S, lot No. 12, AB_10693936	0.5	3% Nonfat milk-PBS 0.1% Tween-20