Screening of protein kinases by ATP-STD NMR spectroscopy.
ATP-STD NMR takes advantage of Mg2+ binding to ATP to adjust the ATP affinity for protein kinases permitting a wide range of Ki's to be determined for ATP competitive ligands. Substituting Mn2+ for Mg2+ creates a paramagnetic probe (MnATP) from which the proximity of non-ATP competitive ligands can be inferred. Internal standards and references are used to reduce false positives due to protein or compound degradation. Use of the natural ATP ligand confers active site-specificity that is not available a priori from other ligand binding experiments.
McCoy
Mark A
MA
Schering-Plough Research Institute, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, USA. mark.mccoy@spcorp.com
Senior
Mary M
MM
Wyss
Daniel F
DF
D000255:Adenosine Triphosphate / Q000737:chemistry* / Q000378:metabolism; D001667:Binding, Competitive; D007700:Kinetics; D008958:Models, Molecular; D019906:Nuclear Magnetic Resonance, Biomolecular / Q000379:methods*; D047428:Protein Kinase Inhibitors / Q000737:chemistry / Q000378:metabolism; D011494:Protein Kinases / Q000737:chemistry* / Q000378:metabolism; D013379:Substrate Specificity
D047428:Protein Kinase Inhibitors; D000255:Adenosine Triphosphate; D011494:Protein Kinases