Activation of recombinant human AMPK alpha2/beta1/gamma1 assessed as protection from Thr172 residue dephosphorylation up to 40 uM preincubated for 15 mins followed by incubation with PP2a for 60 mins measured 60 mins post okadaic acid/Cy5-labelled SAMS and ATP addition by TR-FRET assay
Activation of recombinant human AMPK alpha2/beta1/gamma1 using Cy5-labelled SAMS as substrate assessed as protection from Thr172 residue dephosphorylation preincubated for 15 mins followed by incubation with PP2a for 60 mins measured 60 mins post okadaic acid/Cy5-labelled SAMS and ATP addition by TR-FRET assay
Activation of recombinant human AMPK alpha2/beta1/gamma1 using Cy5-labelled SAMS as substrate assessed as protection from Thr172 residue dephosphorylation preincubated for 15 mins followed by incubation with PP2a for 60 mins measured 60 mins post okadaic acid/Cy5-labelled SAMS and ATP addition by TR-FRET assay relative to AMP
Activation of full length human recombinant AMPK alpha2/beta1/gamma1 expressed in baculovirus infected sf21 cells using 5'-FAM-SAMS peptide substrate after 45 mins by fluorescence assay
Activation of full length human recombinant AMPK alpha2/beta1/gamma1 expressed in baculovirus infected sf21 cells using 5'-FAM-SAMS peptide substrate after 45 mins by fluorescence assay relative to AMP
Activation of human recombinant AMPK alpha2/beta1/gamma1 expressed in African green monkey COS7 cells assessed as increase in biotinylated AAC (1 to 120 residues) peptide phosphorylation at Ser-79 residue measured after 60 mins by Alphascreen assay
Activation of human recombinant AMPK alpha2/beta1/gamma1 expressed in African green monkey COS7 cells assessed as increase in biotinylated AAC (1 to 120 residues) peptide phosphorylation at Ser-79 residue measured after 60 mins by Alphascreen assay relative to control
In Vitro AMPK Activation Assay: The in vitro AMPK activation assay is performed in a volume of 30 μl in a 384-well plate. Enzyme reactions were assembled in the microtiter plate by adding 15 μl of 2× enzyme in assay buffer (20 mM HEPES, pH 7.3, 5 mM MgCl2, 3 mM DTT, 0.01% Brij 35 and CamK Kinase, to activate AMPK) to wells which contained either DMSO or compound. The reaction was initiated with the addition of 15 μl 2× substrate mixture containing 200 μM ATP, and 3.0 μM fluorescently labeled SAMS (5-FAM-HMRSAMSGLHLVKRR-COOH) in assay buffer. After 45-minute incubation at 25° C., the reaction was stopped by the addition of 70 μl stop buffer (100 mM HEPES, pH 7.3, 40 mM EDTA, 0.015% Brij 35). Phosphorylated 5-FAM SAMS product is assessed using a Caliper EZ Reader LabChip microfluidics reader. Product conversion is determined by calculating the peak heights of the substrate and product and reporting the product/(product+substrate) peak ratio.
Agonist activity at human recombinant phosphorylated AMPK complex 7 alpha2/beta1/gamma1 expressed in baculovirus infected Sf21 cells assessed as phosphorylation of 5-FAM-labeled SAMS substrate at 50 uM preincubated for 30 mins in presence of AMPK activator followed by substrate addition measured after 60 mins relative to AMP
Agonist activity at human recombinant phosphorylated AMPK complex 7 alpha2/beta1/gamma1 expressed in baculovirus infected Sf21 cells assessed as phosphorylation of 5-FAM-labeled SAMS substrate preincubated for 30 mins in presence of AMPK activator followed by substrate addition measured after 60 mins
Agonist activity at human recombinant phosphorylated AMPK complex 7 alpha2/beta1/gamma1 expressed in baculovirus infected Sf21 cells assessed as phosphorylation of 5-FAM-labeled SAMS substrate at 0.002 to 50 uM preincubated for 30 mins in presence of AMPK activator followed by substrate addition measured after 60 mins relative to AMP
Agonist activity at human recombinant phosphorylated AMPK complex 7 alpha2/beta1/gamma1 expressed in baculovirus infected Sf21 cells assessed as phosphorylation of 5-FAM-labeled SAMS substrate at 0.0008 to 16 uM preincubated for 30 mins in presence of AMPK activator followed by substrate addition measured after 60 mins relative to AMP