Inhibition of human Mnk2a using TAMRA-labeled eIF4E peptide as substrate incubated for 10 mins followed by addition of ATP measured after 90 mins by IMAP TR-FRET analysis
Inhibition of CDK2/cyclinA (unknown origin) using TAMRA-labeled eIF4E peptide as substrate incubated for 10 mins followed by addition of ATP measured after 90 mins by IMAP TR-FRET analysis
Inhibition of CDK9/cyclinT1 (unknown origin) using TAMRA-labeled eIF4E peptide as substrate incubated for 10 mins followed by addition of ATP measured after 90 mins by IMAP TR-FRET analysis
Inhibition of Mnk1a (unknown origin) using TAMRA-labeled eIF4E peptide as substrate incubated for 10 mins followed by addition of ATP measured after 90 mins by IMAP TR-FRET analysis
In Vitro Kinase Assay: Inhibition of kinase activity of Mnk1 and Mnk2a was assessed with the same assay system, using pre-activated GST-Mnk1 or GST-Mnk2a, respectively. The kinase reaction contains 30 μM substrate peptide, 20 μM ATP, 60 nM ligand and one of either 25 nM pre-activated Mnk1 or 2.5 nM pre-activated Mnk2a. The reaction buffer conditions are 16 mM HEPES/KOH pH 7.4, 8 mM MgCl2, 0.4 mM DTT, 0.08% (w/v) bovine serum albumin (BSA, Sigma, Germany, cat. no. A3059), 0.008% (w/v) Pluronic F127 (Sigma, Germany, cat. no. P2443), 3% (v/v) DMSO (Applichem, Germany, cat. no. A3006). The kinase reaction is at 30° C. for 40 min. The kinase reaction is terminated by addition of 0.67 reaction volumes of 1 μM antibody in 20 mM HEPES/KOH pH 7.4, 50 mM ethylenediaminetetraacetic acid, disodium salt (EDTA, Sigma, Germany, cat. no. E5134), 0.5 mM DTT, 0.05% (w/v) polyoxyethylene-sorbitan monolaureate (Tween 20, Sigma, Germany, cat. no. P7949). After 1 h equilibration time at room temperature, samples are subjected to fluorescence polarization measurement. The fluorescence polarization readout was generated on an Analyst AD multimode reader (Molecular Devices, Sunnyvale, Calif., USA) equipped with a DLRP650 dichroic mirror (Omega Opticals, Brattleboro, Vt., USA, cat. no. XF2035), a 630AF50 band pass filter (Omega Opticals, Brattleboro, Vt., USA, cat. no. XF1069) on the excitation and a 695AF55 band pass filter on the emission side (Omega Opticals, Brattleboro, Vt., USA, cat. no. XF3076).
Inhibition Assay: Inhibition of kinase activity of Mnk1 and Mnk2a was assessed with the same assay system, using pre-activated GST-Mnk1 or GST-Mnk2a, respectively. The kinase reaction contains 30 uM substrate peptide, 20 uM ATP, 60 nM ligand and one of either 25 nM pre-activated Mnk1 or 2.5 nM pre-activated Mnk2a. The reaction buffer conditions are 16 mM HEPES/KOH pH 7.4, 8 mM MgCl2, 0.4 mM DTT, 0.08% (w/v) bovine serum albumin (BSA, Sigma, Germany, cat. no. A3059), 0.008% (w/v) Pluronic F127 (Sigma, Germany, cat. no. P2443), 3% (v/v) DMSO (Applichem, Germany, cat. no. A3006). The kinase reaction is at 30 C. for 40 min. The kinase reaction is terminated by addition of 0.67 reaction volumes of 1 uM antibody in 20 mM HEPES/KOH pH 7.4, 50 mM ethylenediaminetetraacetic acid, disodium salt (EDTA, Sigma, Germany, cat. no. E5134), 0.5 mM DTT, 0.05% (w/v) polyoxyethylene-sorbitan monolaureate (Tween 20, Sigma, Germany, cat. no. P7949).
In Vitro Kinase Assay: Inhibition of kinase activity of Mnk1 and Mnk2a was assessed with the same assay system, using pre-activated GST-Mnk1 or GST-Mnk2a, respectively. The kinase reaction contains 30 μM substrate peptide, 20 μM ATP, 60 nM ligand and one of either 25 nM pre-activated Mnk1 or 2.5 nM pre-activated Mnk2a. The reaction buffer conditions are 16 mM HEPES/KOH pH 7.4, 8 mM MgCl2, 0.4 mM DTT, 0.08% (w/v) bovine serum albumin (BSA, Sigma, Germany, cat. no. A3059), 0.008% (w/v) Pluronic F127 (Sigma, Germany, cat. no. P2443), 3% (v/v) DMSO (Applichem, Germany, cat. no. A3006). The kinase reaction is at 30° C. for 40 min. The kinase reaction is terminated by addition of 0.67 reaction volumes of 1 μM antibody in 20 mM HEPES/KOH pH 7.4, 50 mM ethylenediaminetetraacetic acid, disodium salt (EDTA, Sigma, Germany, cat. no. E5134), 0.5 mM DTT, 0.05% (w/v) polyoxyethylene-sorbitan monolaureate (Tween 20, Sigma, Germany, cat. no. P7949). After 1 h equilibration time at room temperature, samples are subjected to fluorescence polarization measurement. The fluorescence polarization readout was generated on an Analyst AD multimode reader (Molecular Devices, Sunnyvale, Calif., USA) equipped with a DLRP650 dichroic mirror (Omega Opticals, Brattleboro, Vt., USA, cat. no. XF2035), a 630AF50 band pass filter (Omega Opticals, Brattleboro, Vt., USA, cat. no. XF1069) on the excitation and a 695AF55 band pass filter on the emission side (Omega Opticals, Brattleboro, Vt., USA, cat. no. XF3076).