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Structure of human Ketohexokinase complexed with hits from fragment screening
Structural highlights
DiseaseKHK_HUMAN Defects in KHK are the cause of fructosuria (FRUCT) [MIM:229800. Benign defect of intermediary metabolism.[1] [2] FunctionPublication Abstract from PubMedIncreased fructose consumption and its subsequent metabolism have been implicated in hepatic steatosis, dyslipidemia, obesity, and insulin resistance in humans. Since ketohexokinase (KHK) is the principal enzyme responsible for fructose metabolism, identification of a selective KHK inhibitor may help to further elucidate the effect of KHK inhibition on these metabolic disorders. Until now, studies on KHK inhibition with small molecules have been limited due to the lack of viable in vivo pharmacological tools. Herein we report the discovery of 12, a selective KHK inhibitor with potency and properties suitable for evaluating KHK inhibition in rat models. Key structural features interacting with KHK were discovered through fragment-based screening and subsequent optimization using structure-based drug design, and parallel medicinal chemistry led to the identification of pyridine 12. Discovery of Fragment-Derived Small Molecules for in Vivo Inhibition of Ketohexokinase (KHK).,Huard K, Ahn K, Amor P, Beebe DA, Borzilleri KA, Chrunyk BA, Coffey SB, Cong Y, Conn EL, Culp JS, Dowling MS, Gorgoglione MF, Gutierrez JA, Knafels JD, Lachapelle EA, Pandit J, Parris KD, Perez S, Pfefferkorn JA, Price DA, Raymer B, Ross TT, Shavnya A, Smith AC, Subashi TA, Tesz GJ, Thuma BA, Tu M, Weaver JD, Weng Y, Withka JM, Xing G, Magee TV J Med Chem. 2017 Sep 11. doi: 10.1021/acs.jmedchem.7b00947. PMID:28853885[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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