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  • Title: Screening of protein kinases by ATP-STD NMR spectroscopy.
    Author: McCoy MA, Senior MM, Wyss DF.
    Journal: J Am Chem Soc; 2005 Jun 08; 127(22):7978-9. PubMed ID: 15926798.
    Abstract:
    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.
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