6u5l

Structure of human ULK4 in complex with an inhibitor

spinqualitylabelsall models 6u5l, resolution 1.75Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6u5l is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.75Å Ligands: 3RJ, GOL, PEG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease ULK4_HUMAN Various anomalies in ULK4 gene have been reported for several cases of schizophrenia, schizophrenia plus bipolar disorder and autism. ULK4 gene has been proposed to be a rare susceptibility risk factor for a range of psychiatric diseases including schizophrenia. Function ULK4_HUMAN May be involved in the remodeling of cytoskeletal components, such as alpha-tubulin, and in this way regulates neurite branching and elongation, as well as cell motility. Publication Abstract from PubMed The ULK (UNC51-like) enzymes are a family of mammalian kinases that have critical roles in autophagy and development. While ULK1, ULK2, and ULK3 have been characterized, very little is known about ULK4. However, recently, deletions in ULK4 have been genetically linked to increased susceptibility to developing schizophrenia, a devastating neuropsychiatric disease with high heritability but few genes identified. Interestingly, ULK4 is a pseudokinase with some unusual mutations in the kinase catalytic motifs. Here, we report the first structure of the human ULK4 kinase at high resolution and show that although ULK4 has no apparent phosphotransfer activity, it can strongly bind ATP. We find an unusual mechanism for binding ATP in a Mg(2+)-independent manner, including a rare hydrophobic bridge in the active site. In addition, we develop two assays for ATP binding to ULK4, perform a virtual and experimental screen to identify small-molecule binders of ULK4, and identify several novel scaffolds that bind ULK4 and can lead the way to more selective small molecules that may help shed light on the function of this enigmatic protein. High-Resolution Structure and Inhibition of the Schizophrenia-Linked Pseudokinase ULK4.,Khamrui S, Ung PMU, Secor C, Schlessinger A, Lazarus MB J Am Chem Soc. 2019 Dec 17. doi: 10.1021/jacs.9b10458. PMID:31841327 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Serine/threonine protein kinase 3D structures

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