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  • 1
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    TRP-PLIK, a bifunctional protein with kinase and ion channel activities (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-02-13
    Description: We cloned and characterized a protein kinase and ion channel, TRP-PLIK. As part of the long transient receptor potential channel subfamily implicated in control of cell division, it is a protein that is both an ion channel and a protein kinase. TRP-PLIK phosphorylated itself, displayed a wide tissue distribution, and, when expressed in CHO-K1 cells, constituted a nonselective, calcium-permeant, 105-picosiemen, steeply outwardly rectifying conductance. The zinc finger containing alpha-kinase domain was functional. Inactivation of the kinase activity by site-directed mutagenesis and the channel's dependence on intracellular adenosine triphosphate (ATP) demonstrated that the channel's kinase activity is essential for channel function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Runnels, L W -- Yue, L -- Clapham, D E -- New York, N.Y. -- Science. 2001 Feb 9;291(5506):1043-7. Epub 2001 Jan 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Cardiology, Department of Neurobiology, Harvard Medical School, 1309 Enders Building, 320 Longwood Avenue, Children's Hospital, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11161216" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; CHO Cells ; Calcium/metabolism ; Catalytic Domain ; Cations/metabolism ; Cell Line ; Cricetinae ; DNA, Complementary ; Electric Conductivity ; Humans ; Ion Channels/chemistry/*genetics/*metabolism ; *Membrane Proteins ; Mice ; Molecular Sequence Data ; Mutation ; Myelin Basic Protein/metabolism ; Patch-Clamp Techniques ; Phosphorylation ; Protein Kinases/chemistry/*genetics/*metabolism ; Protein-Serine-Threonine Kinases ; Rats ; Recombinant Fusion Proteins/chemistry/metabolism ; TRPM Cation Channels ; Transfection ; Two-Hybrid System Techniques ; Type C Phospholipases/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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  • 2
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    A prokaryotic voltage-gated sodium channel (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-18
    Description: The pore-forming subunits of canonical voltage-gated sodium and calcium channels are encoded by four repeated domains of six-transmembrane (6TM) segments. We expressed and characterized a bacterial ion channel (NaChBac) from Bacillus halodurans that is encoded by one 6TM segment. The sequence, especially in the pore region, is similar to that of voltage-gated calcium channels. The expressed channel was activated by voltage and was blocked by calcium channel blockers. However, the channel was selective for sodium. The identification of NaChBac as a functionally expressed bacterial voltage-sensitive ion-selective channel provides insight into both voltage-dependent activation and divalent cation selectivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ren, D -- Navarro, B -- Xu, H -- Yue, L -- Shi, Q -- Clapham, D E -- New York, N.Y. -- Science. 2001 Dec 14;294(5550):2372-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Children's Hospital, Harvard Medical School, Enders 1309, 320 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11743207" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Bacillus/*chemistry/genetics/metabolism ; *Bacterial Proteins ; CHO Cells ; COS Cells ; Calcium/metabolism ; Calcium Channel Blockers/pharmacology ; Calcium Channels/chemistry/metabolism ; Cricetinae ; Dihydropyridines/pharmacology ; Genes, Bacterial ; Ion Channel Gating ; Membrane Potentials ; Molecular Sequence Data ; Molecular Weight ; Open Reading Frames ; Patch-Clamp Techniques ; Protein Structure, Tertiary ; Recombinant Proteins/metabolism ; Sodium/*metabolism ; Sodium Channels/chemistry/*genetics/*metabolism ; Tetrodotoxin/pharmacology ; 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)
    Location Call Number Expected Availability
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    PAPER CURRENT
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