NUCLEUS LABEL LKB1 LKB1 PKA ACACB ACACB acetyl-CoA malonyl-CoA LABEL CPT1 malonyl-CoA AMP AMPKβ AMPKα AMPKγ AMPKβ AMPKα AMPKγ AMPKβ AMPKα AMPKγ MO25 STRAD LKB1 STRAD MO25 MITOCHONDRION LABEL L-carnitine acyl-L-carnitine acyl-CoA CPT1 LKB1 CPT1 PKA cAMP PKA @S428 P@S428 active @S222 P@S222 AMP P inactive