6q8k
From Proteopedia
CLK1 with bound pyridoquinazoline
Structural highlights
Function[CLK1_HUMAN] Dual specificity kinase acting on both serine/threonine and tyrosine-containing substrates. Phosphorylates serine- and arginine-rich (SR) proteins of the spliceosomal complex and may be a constituent of a network of regulatory mechanisms that enable SR proteins to control RNA splicing. Phosphorylates: SRSF1, SRSF3 and PTPN1. Regulates the alternative splicing of tissue factor (F3) pre-mRNA in endothelial cells and adenovirus E1A pre-mRNA.[1] [2] Publication Abstract from PubMedCdc2-like kinase 1 (CLK1) and dual specificity tyrosine phosphorylation-regulated kinase 1A (DYRK1A) are involved in the regulation of alternative pre-mRNA splicing. Dysregulation of this process has been linked to cancer progression and neurodegenerative diseases, making CLK1 and DYRK1A important therapeutic targets. Here we describe the synthesis of new pyrido[3,4-g]quinazoline derivatives and the evaluation of the inhibitory potencies of these compounds toward CDK5, CK1, GSK3, CLK1 and DYRK1A. Introduction of aminoalkylamino groups at the 2-position resulted in several compounds with low nanomolar affinity and selective inhibition of CLK1 and/or DYRK1A. Their evaluation on several immortalized or cancerous cell lines showed varying degree of cell viability reduction. Co-crystal structures of CLK1 with two of the most potent compounds revealed two alternative binding modes of the pyrido[3,4-g]quinazoline scaffold that can be exploited for future inhibitor design. New pyrido[3,4-g]quinazoline derivatives as CLK1 and DYRK1A inhibitors: synthesis, biological evaluation and binding mode analysis.,Tazarki H, Zeinyeh W, Esvan YJ, Knapp S, Chatterjee D, Schroder M, Joerger AC, Khiari J, Josselin B, Baratte B, Bach S, Ruchaud S, Anizon F, Giraud F, Moreau P Eur J Med Chem. 2019 Jan 26;166:304-317. doi: 10.1016/j.ejmech.2019.01.052. PMID:30731399[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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Categories: Dual-specificity kinase | Human | Anizon, F | Arrowsmith, C H | Bach, S | Bountra, C | Edwards, A M | Esvan, Y J | Giraud, F | Joesselin, B | Khiari, J | Knapp, S | Moreau, P | Ruchaud, S | Structural genomic | Schroeder, M | Tazarki, H | Zeinyeh, W | Clk1 | Dual specifity protein kinase clk1 | Inhibitor | Kinase | Sgc | Transferase