6etj | pdb_00006etj

HUMAN PFKFB3 IN COMPLEX WITH KAN0438241

spinqualitylabelsall models 6etj, resolution 2.51Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6etj 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 2.51Å Ligands: ADP, BWW, DMS, F6P, NEP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function F263_HUMAN Synthesis and degradation of fructose 2,6-bisphosphate. Publication Abstract from PubMed The glycolytic PFKFB3 enzyme is widely overexpressed in cancer cells and an emerging anti-cancer target. Here, we identify PFKFB3 as a critical factor in homologous recombination (HR) repair of DNA double-strand breaks. PFKFB3 rapidly relocates into ionizing radiation (IR)-induced nuclear foci in an MRN-ATM-gammaH2AX-MDC1-dependent manner and co-localizes with DNA damage and HR repair proteins. PFKFB3 relocalization is critical for recruitment of HR proteins, HR activity, and cell survival upon IR. We develop KAN0438757, a small molecule inhibitor that potently targets PFKFB3. Pharmacological PFKFB3 inhibition impairs recruitment of ribonucleotide reductase M2 and deoxynucleotide incorporation upon DNA repair, and reduces dNTP levels. Importantly, KAN0438757 induces radiosensitization in transformed cells while leaving non-transformed cells unaffected. In summary, we identify a key role for PFKFB3 enzymatic activity in HR repair and present KAN0438757, a selective PFKFB3 inhibitor that could potentially be used as a strategy for the treatment of cancer. Targeting PFKFB3 radiosensitizes cancer cells and suppresses homologous recombination.,Gustafsson NMS, Farnegardh K, Bonagas N, Ninou AH, Groth P, Wiita E, Jonsson M, Hallberg K, Lehto J, Pennisi R, Martinsson J, Norstrom C, Hollers J, Schultz J, Andersson M, Markova N, Marttila P, Kim B, Norin M, Olin T, Helleday T Nat Commun. 2018 Sep 24;9(1):3872. doi: 10.1038/s41467-018-06287-x. PMID:30250201 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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