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  • 1
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    Exploiting chemical libraries, structure, and genomics in the search for kinase inhibitors (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1998-07-24
    Description: Selective protein kinase inhibitors were developed on the basis of the unexpected binding mode of 2,6,9-trisubstituted purines to the adenosine triphosphate-binding site of the human cyclin-dependent kinase 2 (CDK2). By iterating chemical library synthesis and biological screening, potent inhibitors of the human CDK2-cyclin A kinase complex and of Saccharomyces cerevisiae Cdc28p were identified. The structural basis for the binding affinity and selectivity was determined by analysis of a three-dimensional crystal structure of a CDK2-inhibitor complex. The cellular effects of these compounds were characterized in mammalian cells and yeast. In the latter case the effects were characterized on a genome-wide scale by monitoring changes in messenger RNA levels in treated cells with high-density oligonucleotide probe arrays. Purine libraries could provide useful tools for analyzing a variety of signaling and regulatory pathways and may lead to the development of new therapeutics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gray, N S -- Wodicka, L -- Thunnissen, A M -- Norman, T C -- Kwon, S -- Espinoza, F H -- Morgan, D O -- Barnes, G -- LeClerc, S -- Meijer, L -- Kim, S H -- Lockhart, D J -- Schultz, P G -- New York, N.Y. -- Science. 1998 Jul 24;281(5376):533-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9677190" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine/*analogs & derivatives/chemistry/metabolism/pharmacology ; Binding Sites ; *CDC2-CDC28 Kinases ; CDC28 Protein Kinase, S cerevisiae/antagonists & inhibitors ; Cell Division/drug effects ; Crystallography, X-Ray ; Cyclin A/metabolism ; Cyclin-Dependent Kinase 2 ; Cyclin-Dependent Kinases/*antagonists & inhibitors ; Drug Evaluation, Preclinical ; Flavonoids/chemistry/metabolism/pharmacology ; Gene Expression Regulation, Fungal/drug effects ; Genes, Fungal ; Humans ; Hydrogen Bonding ; Oligonucleotide Probes ; Phosphates/metabolism ; Piperidines/chemistry/metabolism/pharmacology ; Protein-Serine-Threonine Kinases/antagonists & inhibitors ; Purines/chemical synthesis/chemistry/metabolism/*pharmacology ; RNA, Messenger/genetics/metabolism ; Saccharomyces cerevisiae/enzymology/genetics ; Structure-Activity Relationship ; Transcription, Genetic/drug effects ; Tumor Cells, Cultured
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Formation and activation of a cyclin E-cdk2 complex during the G1 phase of the human cell cycle (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-09-18
    Description: Human cyclin E, originally identified on the basis of its ability to function as a G1 cyclin in budding yeast, associated with a cell cycle-regulated protein kinase in human cells. The cyclin E-associated kinase activity peaked during G1, before the appearance of cyclin A, and was diminished during exit from the cell cycle after differentiation or serum withdrawal. The major cyclin E-associated kinase in human cells was Cdk2 (cyclin-dependent kinase 2). The abundance of the cyclin E protein and the cyclin E-Cdk2 complex was maximal in G1 cells. These results provide further evidence that in all eukaryotes assembly of a cyclin-Cdk complex is an important step in the biochemical pathway that controls cell proliferation during G1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koff, A -- Giordano, A -- Desai, D -- Yamashita, K -- Harper, J W -- Elledge, S -- Nishimoto, T -- Morgan, D O -- Franza, B R -- Roberts, J M -- New York, N.Y. -- Science. 1992 Sep 18;257(5077):1689-94.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1388288" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; B-Lymphocytes/metabolism ; *CDC2-CDC28 Kinases ; Cell Line ; Cyclin-Dependent Kinase 2 ; *Cyclin-Dependent Kinases ; Cyclins/*metabolism ; Flow Cytometry ; G1 Phase/*physiology ; Humans ; Immunoblotting ; Immunosorbent Techniques ; Protein Kinases/*metabolism ; *Protein-Serine-Threonine Kinases ; Rats
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    A cyclin-dependent kinase-activating kinase (CAK) in budding yeast unrelated to vertebrate CAK (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-09-20
    Description: Progress through the cell cycle is governed by the cyclin-dependent kinases (CDKs), the activation of which requires phosphorylation by the CDK-activating kinase (CAK). In vertebrates, CAK is a trimeric enzyme containing CDK7, cyclin H, and MAT1. CAK from the budding yeast Saccharomyces cerevisiae was identified as an unusual 44-kilodalton protein kinase, Cak1, that is only distantly related to CDKs. Cak1 accounted for most CAK activity in yeast cell lysates, and its activity was constant throughout the cell cycle. The CAK1 gene was essential for cell viability. Thus, the major CAK in S. cerevisiae is distinct from the vertebrate enzyme, suggesting that budding yeast and vertebrates may have evolved different mechanisms of CDK activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Espinoza, F H -- Farrell, A -- Erdjument-Bromage, H -- Tempst, P -- Morgan, D O -- New York, N.Y. -- Science. 1996 Sep 20;273(5282):1714-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, University of California, San Francisco, 94143-0444, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8781234" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *CDC2-CDC28 Kinases ; CDC28 Protein Kinase, S cerevisiae/metabolism ; Cell Cycle ; Cyclin-Dependent Kinase 2 ; Cyclin-Dependent Kinases/metabolism ; Enzyme Activation ; Gene Deletion ; Genes, Fungal ; Humans ; Molecular Sequence Data ; Molecular Weight ; Phosphorylation ; Protein-Serine-Threonine Kinases/*chemistry/genetics/isolation & ; purification/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Saccharomyces cerevisiae/*enzymology/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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