2iw9 | pdb_00002iw9

STRUCTURE OF HUMAN THR160-PHOSPHO CDK2-CYCLIN A COMPLEXED WITH A BISANILINOPYRIMIDINE INHIBITOR

spinqualitylabelsall models 2iw9, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2iw9 is a 4 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: 4SP, MG, SGM NonStd Res: TPO 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, 2clx, 2exm, 2iw6, 2iw8 Activity: Non-specific serine/threonine protein kinase, with EC number 2.7.11.1 Resources: FirstGlance, OCA, RCSB, PDBsum Function [CDK2_HUMAN] Serine/threonine-protein kinase involved in the control of the cell cycle; essential for meiosis, but dispensable for mitosis. Phosphorylates CTNNB1, USP37, p53/TP53, NPM1, CDK7, RB1, BRCA2, MYC, NPAT, EZH2. Interacts with cyclins A, B1, B3, D, or E. Triggers duplication of centrosomes and DNA. Acts at the G1-S transition to promote the E2F transcriptional program and the initiation of DNA synthesis, and modulates G2 progression; controls the timing of entry into mitosis/meiosis by controlling the subsequent activation of cyclin B/CDK1 by phosphorylation, and coordinates the activation of cyclin B/CDK1 at the centrosome and in the nucleus. Crucial role in orchestrating a fine balance between cellular proliferation, cell death, and DNA repair in human embryonic stem cells (hESCs). Activity of CDK2 is maximal during S phase and G2; activated by interaction with cyclin E during the early stages of DNA synthesis to permit G1-S transition, and subsequently activated by cyclin A2 (cyclin A1 in germ cells) during the late stages of DNA replication to drive the transition from S phase to mitosis, the G2 phase. EZH2 phosphorylation promotes H3K27me3 maintenance and epigenetic gene silencing. Phosphorylates CABLES1 (By similarity). Cyclin E/CDK2 prevents oxidative stress-mediated Ras-induced senescence by phosphorylating MYC. Involved in G1-S phase DNA damage checkpoint that prevents cells with damaged DNA from initiating mitosis; regulates homologous recombination-dependent repair by phosphorylating BRCA2, this phosphorylation is low in S phase when recombination is active, but increases as cells progress towards mitosis. In response to DNA damage, double-strand break repair by homologous recombination a reduction of CDK2-mediated BRCA2 phosphorylation. Phosphorylation of RB1 disturbs its interaction with E2F1. NPM1 phosphorylation by cyclin E/CDK2 promotes its dissociates from unduplicated centrosomes, thus initiating centrosome duplication. Cyclin E/CDK2-mediated phosphorylation of NPAT at G1-S transition and until prophase stimulates the NPAT-mediated activation of histone gene transcription during S phase. Required for vitamin D-mediated growth inhibition by being itself inactivated. Involved in the nitric oxide- (NO) mediated signaling in a nitrosylation/activation-dependent manner. USP37 is activated by phosphorylation and thus triggers G1-S transition. CTNNB1 phosphorylation regulates insulin internalization. [CCNA2_HUMAN] Essential for the control of the cell cycle at the G1/S (start) and the G2/M (mitosis) transitions. 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 Cyclin dependent kinases are a key family of kinases involved in cell cycle regulation and are an attractive target for cancer chemotherapy. The roles of four residues of the cyclin-dependent kinase active site in inhibitor selectivity were investigated by producing cyclin-dependent kinase 2 mutants bearing equivalent cyclin-dependent kinase 4 residues, namely F82H, L83V, H84D, and K89T. Assay of the mutants with a cyclin-dependent kinase 4-selective bisanilinopyrimidine shows that the K89T mutation is primarily responsible for the selectivity of this compound. Use of the cyclin-dependent kinase 2-selective 6-cyclohexylmethoxy-2-(4'-sulfamoylanilino)purine (NU6102) shows that K89T has no role in the selectivity, while the remaining three mutations have a cumulative influence. The results indicate that certain residues that are not frequently considered in structure-aided kinase inhibitor design have an important role to play. Dissecting the determinants of cyclin-dependent kinase 2 and cyclin-dependent kinase 4 inhibitor selectivity.,Pratt DJ, Bentley J, Jewsbury P, Boyle FT, Endicott JA, Noble ME J Med Chem. 2006 Sep 7;49(18):5470-7. PMID:16942020 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Cell division protein kinase 2 Cyclin

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