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  • 1
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    Induction of apoptosis by ASK1, a mammalian MAPKKK that activates SAPK/JNK and p38 signaling pathways (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1997-01-03
    Description: Mitogen-activated protein (MAP) kinase cascades are activated in response to various extracellular stimuli, including growth factors and environmental stresses. A MAP kinase kinase kinase (MAPKKK), termed ASK1, was identified that activated two different subgroups of MAP kinase kinases (MAPKK), SEK1 (or MKK4) and MKK3/MAPKK6 (or MKK6), which in turn activated stress-activated protein kinase (SAPK, also known as JNK; c-Jun amino-terminal kinase) and p38 subgroups of MAP kinases, respectively. Overexpression of ASK1 induced apoptotic cell death, and ASK1 was activated in cells treated with tumor necrosis factor-alpha (TNF-alpha). Moreover, TNF-alpha-induced apoptosis was inhibited by a catalytically inactive form of ASK1. ASK1 may be a key element in the mechanism of stress- and cytokine-induced apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ichijo, H -- Nishida, E -- Irie, K -- ten Dijke, P -- Saitoh, M -- Moriguchi, T -- Takagi, M -- Matsumoto, K -- Miyazono, K -- Gotoh, Y -- New York, N.Y. -- Science. 1997 Jan 3;275(5296):90-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, The Cancer Institute, Tokyo, Japanese Foundation for Cancer Research, 1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo 170, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8974401" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Apoptosis ; COS Cells ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Division ; Cell Line ; Cell Survival ; Enzyme Activation ; JNK Mitogen-Activated Protein Kinases ; MAP Kinase Kinase 6 ; MAP Kinase Kinase Kinases ; *Mitogen-Activated Protein Kinase Kinases ; *Mitogen-Activated Protein Kinases ; Molecular Sequence Data ; Phosphorylation ; Polymerase Chain Reaction ; Protein-Serine-Threonine Kinases/chemistry/*metabolism ; Protein-Tyrosine Kinases/metabolism ; Recombinant Proteins/metabolism ; Saccharomyces cerevisiae/genetics/growth & development/metabolism ; *Signal Transduction ; Transfection ; Tumor Necrosis Factor-alpha/pharmacology ; p38 Mitogen-Activated Protein Kinases
    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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    Microtubule severing by elongation factor 1 alpha (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-14
    Description: An activity that severs stable microtubules is thought to be involved in microtubule reorganization during the cell cycle. Here, a 48-kilodalton microtubule-severing protein was purified from Xenopus eggs and identified as translational elongation factor 1 alpha (EF-1 alpha). Bacterially expressed human EF-1 alpha also displayed microtubule-severing activity in vitro and, when microinjected into fibroblasts, induced rapid and transient fragmentation of cytoplasmic microtubule arrays. Thus, EF-1 alpha, an essential component of the eukaryotic translational apparatus, appears to have a second role as a regulator of cytoskeletal rearrangements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shiina, N -- Gotoh, Y -- Kubomura, N -- Iwamatsu, A -- Nishida, E -- New York, N.Y. -- Science. 1994 Oct 14;266(5183):282-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Molecular Biology, Kyoto University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939665" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/pharmacology ; Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; Guanosine Triphosphate/analogs & derivatives/metabolism ; Humans ; Microtubules/drug effects/*metabolism ; Molecular Sequence Data ; Molecular Weight ; Oocytes ; Peptide Elongation Factor 1 ; Peptide Elongation Factors/chemistry/isolation & purification/*physiology ; Rats ; Recombinant Proteins/pharmacology ; Ribonucleoproteins/chemistry/isolation & purification/*physiology ; Sepharose/analogs & derivatives/metabolism ; Xenopus laevis
    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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    TAB1: an activator of the TAK1 MAPKKK in TGF-beta signal transduction (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1996-05-24
    Description: Transforming growth factor-beta (TGF-beta) regulates many aspects of cellular function. A member of the mitogen-activated protein kinase kinase kinase (MAPKKK) family, TAK1, was previously identified as a mediator in the signaling pathway of TGF-beta superfamily members. The yeast two-hybrid system has now revealed two human proteins, termed TAB1 and TAB2 (for TAK1 binding protein), that interact with TAK1. TAB1 and TAK1 were co-immunoprecipitated from mammalian cells. Overproduction of TAB1 enhanced activity of the plasminogen activator inhibitor 1 gene promoter, which is regulated by TGF-beta, and increased the kinase activity of TAK1. TAB1 may function as an activator of the TAK1 MAPKKK in TGF-beta signal transduction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shibuya, H -- Yamaguchi, K -- Shirakabe, K -- Tonegawa, A -- Gotoh, Y -- Ueno, N -- Irie, K -- Nishida, E -- Matsumoto, K -- New York, N.Y. -- Science. 1996 May 24;272(5265):1179-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8638164" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/chemistry/*metabolism ; Cell Line ; Cloning, Molecular ; Enzyme Activation ; Genes, Reporter ; Humans ; *Intracellular Signaling Peptides and Proteins ; *MAP Kinase Kinase Kinases ; Mice ; Molecular Sequence Data ; Plasminogen Activator Inhibitor 1/genetics ; Promoter Regions, Genetic ; Protein-Serine-Threonine Kinases/*metabolism ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/genetics/metabolism ; *Signal Transduction ; Transfection ; Transformation, Genetic ; Transforming Growth Factor beta/*metabolism
    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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  • 4
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    Activation of the estrogen receptor through phosphorylation by mitogen-activated protein kinase (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-12-01
    Description: The phosphorylation of the human estrogen receptor (ER) serine residue at position 118 is required for full activity of the ER activation function 1 (AF-1). This Ser118 is phosphorylated by mitogen-activated protein kinase (MAPK) in vitro and in cells treated with epidermal growth factor (EGF) and insulin-like growth factor (IGF) in vivo. Overexpression of MAPK kinase (MAPKK) or of the guanine nucleotide binding protein Ras, both of which activate MAPK, enhanced estrogen-induced and antiestrogen (tamoxifen)-induced transcriptional activity of wild-type ER, but not that of a mutant ER with an alanine in place of Ser118. Thus, the activity of the amino-terminal AF-1 of the ER is modulated by the phosphorylation of Ser118 through the Ras-MAPK cascade of the growth factor signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kato, S -- Endoh, H -- Masuhiro, Y -- Kitamoto, T -- Uchiyama, S -- Sasaki, H -- Masushige, S -- Gotoh, Y -- Nishida, E -- Kawashima, H -- Metzger, D -- Chambon, P -- New York, N.Y. -- Science. 1995 Dec 1;270(5241):1491-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Agricultural Chemistry, Tokyo University of Agriculture, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7491495" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Cell Line ; Enzyme Activation ; Epidermal Growth Factor/pharmacology ; Estradiol/analogs & derivatives/pharmacology ; Estrogen Antagonists/pharmacology ; Humans ; Mitogen-Activated Protein Kinase Kinases ; Molecular Sequence Data ; Mutation ; Phosphorylation ; Polyunsaturated Alkamides ; Protein Kinases/metabolism ; Protein-Serine-Threonine Kinases/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-raf ; Proto-Oncogene Proteins p21(ras)/metabolism ; Receptors, Estrogen/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Serine/*metabolism ; Somatomedins/pharmacology ; Tamoxifen/analogs & derivatives/pharmacology ; *Transcriptional Activation/drug effects ; Transfection
    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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