5sck
Structure of liver pyruvate kinase in complex with anthraquinone derivative 42
Structural highlights
DiseaseKPYR_HUMAN Defects in PKLR are the cause of pyruvate kinase hyperactivity (PKHYP) [MIM:102900; also known as high red cell ATP syndrome. This autosomal dominant phenotype is characterized by increase of red blood cell ATP.[1] Defects in PKLR are the cause of pyruvate kinase deficiency of red cells (PKRD) [MIM:266200. A frequent cause of hereditary non-spherocytic hemolytic anemia. Clinically, pyruvate kinase-deficient patients suffer from a highly variable degree of chronic hemolysis, ranging from severe neonatal jaundice and fatal anemia at birth, severe transfusion-dependent chronic hemolysis, moderate hemolysis with exacerbation during infection, to a fully compensated hemolysis without apparent anemia. FunctionKPYR_HUMAN Plays a key role in glycolysis (By similarity). Publication Abstract from PubMedLiver pyruvate kinase (PKL) is a major regulator of metabolic flux and ATP production during liver cell glycolysis and is considered a potential drug target for the treatment of non-alcoholic fatty liver disease (NAFLD). In this study, we report the first ADP-competitive PKL inhibitors and identify several starting points for the further optimization of these inhibitors. Modeling and structural biology guided the optimization of a PKL-specific anthraquinone-based compound. A structure-activity relationship study of 47 novel synthetic derivatives revealed PKL inhibitors with half-maximal inhibitory concentration (IC50) values in the 200 nM range. Despite the difficulty involved in studying a binding site as exposed as the ADP site, these derivatives feature expanded structural diversity and chemical spaces that may be used to improve their inhibitory activities against PKL. The obtained results expand the knowledge of the structural requirements for interactions with the ADP-binding site of PKL. Anthraquinone derivatives as ADP-competitive inhibitors of liver pyruvate kinase.,Nain-Perez A, Foller Fuchtbauer A, Haversen L, Lulla A, Gao C, Matic J, Monjas L, Rodriguez A, Brear P, Kim W, Hyvonen M, Boren J, Mardinoglu A, Uhlen M, Grotli M Eur J Med Chem. 2022 Mar 8;234:114270. doi: 10.1016/j.ejmech.2022.114270. PMID:35290845[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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