2XBJ
Crystal Structure of Chk2 in complex with an inhibitor
Summary for 2XBJ
| Entry DOI | 10.2210/pdb2xbj/pdb |
| Related | 1GXC 2CN5 2CN8 2W0J 2W7X 2WTC 2WTD 2WTI 2WTJ 2XM8 2XM9 |
| Descriptor | SERINE/THREONINE-PROTEIN KINASE CHK2, 4-FLUORO-2-(4-{[(3S,4R)-4-(1-HYDROXY-1-METHYLETHYL)PYRROLIDIN-3-YL]AMINO}-6,7-DIMETHOXYQUINAZOLIN-2-YL)PHENOL, MAGNESIUM ION, ... (5 entities in total) |
| Functional Keywords | transferase, dna repair, parp |
| Biological source | HOMO SAPIENS (HUMAN) |
| Cellular location | Isoform 2: Nucleus. Isoform 4: Nucleus. Isoform 7: Nucleus. Isoform 9: Nucleus. Isoform 12: Nucleus. Nucleus, PML body: O96017 |
| Total number of polymer chains | 1 |
| Total formula weight | 37702.64 |
| Authors | Anderson, V.E.,Walton, M.I.,Eve, P.D.,Caldwell, J.J.,Pearl, L.H.,Oliver, A.W.,Collins, I.,Garrett, M.D. (deposition date: 2010-04-12, release date: 2011-01-12, Last modification date: 2023-12-20) |
| Primary citation | Caldwell, J.J.,Welsh, E.J.,Matijssen, C.,Anderson, V.E.,Antoni, L.,Boxall, K.,Urban, F.,Hayes, A.,Raynaud, F.I.,Rigoreau, L.J.,Raynham, T.,Aherne, G.W.,Pearl, L.H.,Oliver, A.W.,Garrett, M.D.,Collins, I. Structure-Based Design of Potent and Selective 2-(Quinazolin-2-Yl)Phenol Inhibitors of Checkpoint Kinase 2. J.Med.Chem., 54:580-, 2011 Cited by PubMed Abstract: Structure-based design was applied to the optimization of a series of 2-(quinazolin-2-yl)phenols to generate potent and selective ATP-competitive inhibitors of the DNA damage response signaling enzyme checkpoint kinase 2 (CHK2). Structure-activity relationships for multiple substituent positions were optimized separately and in combination leading to the 2-(quinazolin-2-yl)phenol 46 (IC(50) 3 nM) with good selectivity for CHK2 against CHK1 and a wider panel of kinases and with promising in vitro ADMET properties. Off-target activity at hERG ion channels shown by the core scaffold was successfully reduced by the addition of peripheral polar substitution. In addition to showing mechanistic inhibition of CHK2 in HT29 human colon cancer cells, a concentration dependent radioprotective effect in mouse thymocytes was demonstrated for the potent inhibitor 46 (CCT241533). PubMed: 21186793DOI: 10.1021/JM101150B PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2.3 Å) |
Structure validation
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