2clx

4-ARYLAZO-3,5-DIAMINO-1H-PYRAZOLE CDK INHIBITORS: SAR STUDY, CRYSTAL STRUCTURE IN COMPLEX WITH CDK2, SELECTIVITY, AND CELLULAR EFFECTS4-ARYLAZO-3,5-DIAMINO-1H-PYRAZOLE CDK INHIBITORS: SAR STUDY, CRYSTAL STRUCTURE IN COMPLEX WITH CDK2, SELECTIVITY, AND CELLULAR EFFECTS

Structural highlights 2clx 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. Ligands: Related: 1aq1, 1b38, 1b39, 1buh, 1ckp, 1di8, 1dm2, 1e1v, 1e1x, 1e9h, 1f5q, 1fin, 1fq1, 1fvt, 1fvv, 1g5s, 1gih, 1gii, 1gij, 1gy3, 1gz8, 1h00, 1h01, 1h07, 1h08, 1h0v, 1h0w, 1h1p, 1h1q, 1h1r, 1h1s, 1h24, 1h25, 1h26, 1h27, 1h28, 1hck, 1hcl, 1jst, 1jsu, 1jsv, 1jvp, 1ke5, 1ke6, 1ke7, 1ke8, 1ke9, 1ogu, 1oi9, 1oiq, 1oir, 1oit, 1oiu, 1oiy, 1okv, 1okw, 1ol1, 1ol2, 1p2a, 1p5e, 1pf8, 1pkd, 1pw2, 1pxi, 1pxj, 1pxk, 1pxl, 1pxm, 1pxn, 1pxo, 1pxp, 1pye, 1qmz, 1r78, 1urc, 1urw, 1v1k, 1vyw, 1vyz, 1w0x, 1w8c, 1w98, 1wcc, 1y8y, 1y91, 1ykr, 2a0c, 2b52, 2b53, 2b54, 2b55, 2bhe, 2bhh, 2bkz, 2bpm, 2btr, 2bts, 2c4g, 2c5n, 2c5o, 2c5p, 2c5t, 2c5v, 2c5x, 2c5y, 2c68, 2c69, 2c6i, 2c6k, 2c6l, 2c6m, 2c6o, 2c6t, 2cch, 2cci, 2cjm, 2exm Resources: FirstGlance, OCA, RCSB, PDBsum Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed In a routine screening of our small-molecule compound collection we recently identified 4-arylazo-3,5-diamino-1H-pyrazoles as a novel group of ATP antagonists with moderate potency against CDK2-cyclin E. A preliminary SAR study based on 35 analogues suggests ways in which the pharmacophore could be further optimized, for example, via substitutions in the 4-aryl ring. Enzyme kinetics studies with the lead compound and X-ray crystallography of an inhibitor-CDK2 complex demonstrated that its mode of inhibition is competitive. Functional kinase assays confirmed the selectivity toward CDKs, with a preference for CDK9-cyclin T1. The most potent inhibitor, 4-[(3,5-diamino-1H-pyrazol-4-yl)diazenyl]phenol 31b (CAN508), reduced the frequency of S-phase cells of the cancer cell line HT-29 in antiproliferation assays. Further observed cellular effects included decreased phosphorylation of the retinoblastoma protein and the C-terminal domain of RNA polymerase II, inhibition of mRNA synthesis, and induction of the tumor suppressor protein p53, all of which are consistent with inhibition of CDK9. 4-arylazo-3,5-diamino-1H-pyrazole CDK inhibitors: SAR study, crystal structure in complex with CDK2, selectivity, and cellular effects.,Krystof V, Cankar P, Frysova I, Slouka J, Kontopidis G, Dzubak P, Hajduch M, Srovnal J, de Azevedo WF Jr, Orsag M, Paprskarova M, Rolcik J, Latr A, Fischer PM, Strnad M J Med Chem. 2006 Nov 2;49(22):6500-9. PMID:17064068 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cell division protein kinase 2

spinqualitylabelsall models 2clx, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image