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  • 1
    Publication Date: 2002-05-23
    Description: Mechanical and thermal cues stimulate a specialized group of sensory neurons that terminate in the skin. Three members of the transient receptor potential (TRP) family of channels are expressed in subsets of these neurons and are activated at distinct physiological temperatures. Here, we describe the cloning and characterization of a novel thermosensitive TRP channel. TRPV3 has a unique threshold: It is activated at innocuous (warm) temperatures and shows an increased response at noxious temperatures. TRPV3 is specifically expressed in keratinocytes; hence, skin cells are capable of detecting heat via molecules similar to those in heat-sensing neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peier, Andrea M -- Reeve, Alison J -- Andersson, David A -- Moqrich, Aziz -- Earley, Taryn J -- Hergarden, Anne C -- Story, Gina M -- Colley, Sian -- Hogenesch, John B -- McIntyre, Peter -- Bevan, Stuart -- Patapoutian, Ardem -- New York, N.Y. -- Science. 2002 Jun 14;296(5575):2046-9. Epub 2002 May 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Genomics Institute of the Novartis Research Foundation, San Diego, CA 92121, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12016205" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Newborn ; Blotting, Northern ; CHO Cells ; Capsaicin/*analogs & derivatives/pharmacology ; *Cation Transport Proteins ; Cell Line ; Cells, Cultured ; Cloning, Molecular ; Cricetinae ; Epidermis/cytology/innervation/metabolism ; Ganglia, Spinal/metabolism ; *Hot Temperature ; Humans ; In Situ Hybridization ; Ion Channels/chemistry/genetics/*metabolism ; Keratinocytes/*metabolism ; Membrane Potentials ; Mice ; Molecular Sequence Data ; Nerve Endings/physiology ; Neurons/physiology ; Patch-Clamp Techniques ; RNA, Messenger/genetics/metabolism ; Ruthenium Red/pharmacology ; Signal Transduction ; Spinal Cord/metabolism ; TRPV Cation Channels ; Temperature
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2002-04-20
    Description: Cadherins are transmembrane proteins that mediate adhesion between cells in the solid tissues of animals. Here we present the 3.1 angstrom resolution crystal structure of the whole, functional extracellular domain from C-cadherin, a representative "classical" cadherin. The structure suggests a molecular mechanism for adhesion between cells by classical cadherins, and it provides a new framework for understanding both cis (same cell) and trans (juxtaposed cell) cadherin interactions. The trans adhesive interface is a twofold symmetric interaction defined by a conserved tryptophan side chain at the membrane-distal end of a cadherin molecule from one cell, which inserts into a hydrophobic pocket at the membrane-distal end of a cadherin molecule from the opposing cell.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boggon, Titus J -- Murray, John -- Chappuis-Flament, Sophie -- Wong, Ellen -- Gumbiner, Barry M -- Shapiro, Lawrence -- NCI-P30-CA-08784/CI/NCPDCID CDC HHS/ -- R01 GM062270/GM/NIGMS NIH HHS/ -- R01 GM52717/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2002 May 17;296(5571):1308-13. Epub 2002 Apr 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Columbia University College of Physicians and Surgeons, 630 West 168th Street, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11964443" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding Sites ; CHO Cells ; Cadherins/*chemistry/genetics/metabolism ; *Cell Adhesion ; Cricetinae ; Crystallography, X-Ray ; Dimerization ; Glycosylation ; Hydrogen Bonding ; Models, Molecular ; Molecular Sequence Data ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/chemistry ; Tryptophan/chemistry ; Xenopus Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2001-05-26
    Description: Dysfunction of the tubby protein results in maturity-onset obesity in mice. Tubby has been implicated as a transcription regulator, but details of the molecular mechanism underlying its function remain unclear. Here we show that tubby functions in signal transduction from heterotrimeric GTP-binding protein (G protein)-coupled receptors. Tubby localizes to the plasma membrane by binding phosphatidylinositol 4,5-bisphosphate through its carboxyl terminal "tubby domain." X-ray crystallography reveals the atomic-level basis of this interaction and implicates tubby domains as phosphorylated-phosphatidyl- inositol binding factors. Receptor-mediated activation of G protein alphaq (Galphaq) releases tubby from the plasma membrane through the action of phospholipase C-beta, triggering translocation of tubby to the cell nucleus. The localization of tubby-like protein 3 (TULP3) is similarly regulated. These data suggest that tubby proteins function as membrane-bound transcription regulators that translocate to the nucleus in response to phosphoinositide hydrolysis, providing a direct link between G-protein signaling and the regulation of gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Santagata, S -- Boggon, T J -- Baird, C L -- Gomez, C A -- Zhao, J -- Shan, W S -- Myszka, D G -- Shapiro, L -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2041-50. Epub 2001 May 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ruttenberg Cancer Center, Structural Biology Program, Department of Physiology and Biophysics, Mount Sinai School of Medicine of New York University, 1425 Madison Avenue New York, NY 10029, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11375483" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; Cell Membrane/metabolism ; Cell Nucleus/*metabolism ; Cells, Cultured ; Crystallography, X-Ray ; GTP-Binding Protein alpha Subunits, Gq-G11 ; Gene Expression Regulation ; Heterotrimeric GTP-Binding Proteins/*metabolism ; Humans ; Isoenzymes/*metabolism ; Membrane Lipids/metabolism ; Mice ; Models, Biological ; Molecular Sequence Data ; Nuclear Localization Signals ; Obesity/genetics/metabolism ; Phosphatidylinositol 4,5-Diphosphate/*metabolism ; Phosphatidylinositol Phosphates/metabolism ; Phospholipase C beta ; Phosphorylation ; Protein Structure, Tertiary ; Proteins/chemistry/genetics/*metabolism ; Receptor, Serotonin, 5-HT2C ; Receptors, Muscarinic/metabolism ; Receptors, Serotonin/metabolism ; Recombinant Fusion Proteins/metabolism ; *Signal Transduction ; Transcription Factors/chemistry/genetics/*metabolism ; 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
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  • 4
    Publication Date: 2001-03-07
    Description: The ability of intestinal mucosa to absorb dietary ferric iron is attributed to the presence of a brush-border membrane reductase activity that displays adaptive responses to iron status. We have isolated a complementary DNA, Dcytb (for duodenal cytochrome b), which encoded a putative plasma membrane di-heme protein in mouse duodenal mucosa. Dcytb shared between 45 and 50% similarity to the cytochrome b561 family of plasma membrane reductases, was highly expressed in the brush-border membrane of duodenal enterocytes, and induced ferric reductase activity when expressed in Xenopus oocytes and cultured cells. Duodenal expression levels of Dcytb messenger RNA and protein were regulated by changes in physiological modulators of iron absorption. Thus, Dcytb provides an important element in the iron absorption pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McKie, A T -- Barrow, D -- Latunde-Dada, G O -- Rolfs, A -- Sager, G -- Mudaly, E -- Mudaly, M -- Richardson, C -- Barlow, D -- Bomford, A -- Peters, T J -- Raja, K B -- Shirali, S -- Hediger, M A -- Farzaneh, F -- Simpson, R J -- New York, N.Y. -- Science. 2001 Mar 2;291(5509):1755-9. Epub 2001 Feb 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Medicine, Guy's, King's and St. Thomas' School of Medicine, King's College London, Rayne Institute, Denmark Hill Campus, 123 Coldharbour Lane, London SE5 9NU, UK. andrew.t.mckie@kcl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11230685" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Anemia/enzymology ; Animals ; Anoxia ; Cell Line ; Cloning, Molecular ; Cytochrome b Group/chemistry/genetics/*metabolism ; DNA, Complementary ; Duodenum/enzymology/*metabolism ; Enterocytes/enzymology/metabolism ; Enzyme Induction ; Ferric Compounds/*metabolism ; *Intestinal Absorption ; Intestinal Mucosa/enzymology/*metabolism ; Iron, Dietary/administration & dosage/*metabolism ; Male ; Mice ; Microvilli/enzymology/metabolism ; Molecular Sequence Data ; Nitroblue Tetrazolium/metabolism ; Oocytes ; Oxidation-Reduction ; Oxidoreductases/chemistry/genetics/*metabolism ; RNA, Messenger/genetics/metabolism ; Tetrazolium Salts/metabolism ; Thiazoles/metabolism ; *Transfection ; Up-Regulation ; Xenopus
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 5
    Publication Date: 2004-05-01
    Description: Receptor tyrosine kinase genes were sequenced in non-small cell lung cancer (NSCLC) and matched normal tissue. Somatic mutations of the epidermal growth factor receptor gene EGFR were found in 15of 58 unselected tumors from Japan and 1 of 61 from the United States. Treatment with the EGFR kinase inhibitor gefitinib (Iressa) causes tumor regression in some patients with NSCLC, more frequently in Japan. EGFR mutations were found in additional lung cancer samples from U.S. patients who responded to gefitinib therapy and in a lung adenocarcinoma cell line that was hypersensitive to growth inhibition by gefitinib, but not in gefitinib-insensitive tumors or cell lines. These results suggest that EGFR mutations may predict sensitivity to gefitinib.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paez, J Guillermo -- Janne, Pasi A -- Lee, Jeffrey C -- Tracy, Sean -- Greulich, Heidi -- Gabriel, Stacey -- Herman, Paula -- Kaye, Frederic J -- Lindeman, Neal -- Boggon, Titus J -- Naoki, Katsuhiko -- Sasaki, Hidefumi -- Fujii, Yoshitaka -- Eck, Michael J -- Sellers, William R -- Johnson, Bruce E -- Meyerson, Matthew -- New York, N.Y. -- Science. 2004 Jun 4;304(5676):1497-500. Epub 2004 Apr 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Medical Oncology and Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15118125" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/drug therapy/genetics/metabolism ; Amino Acid Motifs ; Amino Acid Sequence ; Amino Acid Substitution ; Antineoplastic Agents/pharmacology/therapeutic use ; Carcinoma, Non-Small-Cell Lung/drug therapy/*genetics/metabolism ; Cell Line, Tumor ; Controlled Clinical Trials as Topic ; Enzyme Inhibitors/pharmacology/therapeutic use ; Female ; *Genes, erbB-1 ; Humans ; Japan ; Lung Neoplasms/drug therapy/*genetics/metabolism ; Male ; Molecular Sequence Data ; *Mutation ; Mutation, Missense ; Phosphorylation ; Protein Conformation ; Protein Structure, Tertiary ; Quinazolines/pharmacology/*therapeutic use ; Receptor, Epidermal Growth Factor/*antagonists & ; inhibitors/chemistry/genetics/metabolism ; Sequence Deletion ; Treatment Outcome ; United States
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2002-03-02
    Description: Type III secreted "effector" proteins of bacterial pathogens play central roles in virulence, yet are notoriously difficult to identify. We used an in vivo genetic screen to identify 13 effectors secreted by the type III apparatus (called Hrp, for "hypersensitive response and pathogenicity") of the plant pathogen Pseudomonas syringae. Although sharing little overall homology, the amino-terminal regions of these effectors had strikingly similar amino acid compositions. This feature facilitated the bioinformatic prediction of 38 P. syringae effectors, including 15 previously unknown proteins. The secretion of two of these putative effectors was shown to be type III--dependent. Effectors showed high interstrain variation, supporting a role for some effectors in adaptation to different hosts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guttman, David S -- Vinatzer, Boris A -- Sarkar, Sara F -- Ranall, Max V -- Kettler, Gregory -- Greenberg, Jean T -- GM020024/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 1;295(5560):1722-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, ON M5S 3B2, Canada. guttman@botany.utoronto.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11872842" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acids/analysis ; Arabidopsis/genetics/metabolism/*microbiology ; *Arabidopsis Proteins ; Bacterial Proteins/chemistry/*genetics/*metabolism ; Computational Biology ; DNA Transposable Elements ; *Genes, Bacterial ; Genomics ; Molecular Sequence Data ; Plant Proteins/metabolism ; Promoter Regions, Genetic ; Proteome ; Pseudomonas/*genetics/*metabolism/pathogenicity ; Recombinant Fusion Proteins/metabolism ; Virulence
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 7
    Publication Date: 2001-08-18
    Description: Organelle transport by myosin-V is down-regulated during mitosis, presumably by myosin-V phosphorylation. We used mass spectrometry phosphopeptide mapping to show that the tail of myosin-V was phosphorylated in mitotic Xenopus egg extract on a single serine residue localized in the carboxyl-terminal organelle-binding domain. Phosphorylation resulted in the release of the motor from the organelle. The phosphorylation site matched the consensus sequence of calcium/calmodulin-dependent protein kinase II (CaMKII), and inhibitors of CaMKII prevented myosin-V release. The modulation of cargo binding by phosphorylation is likely to represent a general mechanism regulating organelle transport by myosin-V.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Karcher, R L -- Roland, J T -- Zappacosta, F -- Huddleston, M J -- Annan, R S -- Carr, S A -- Gelfand, V I -- GM-52111/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Aug 17;293(5533):1317-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Structural Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509731" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Biological Transport ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors/*metabolism ; Calmodulin-Binding Proteins/chemistry/genetics/*metabolism ; Cell Extracts ; Egtazic Acid/analogs & derivatives/pharmacology ; Enzyme Inhibitors/pharmacology ; Interphase ; Mass Spectrometry ; Melanophores/metabolism/ultrastructure ; Melanosomes/*metabolism ; *Mitosis ; Molecular Motor Proteins/*metabolism ; Molecular Sequence Data ; Mutation ; *Myosin Type V ; Nerve Tissue Proteins/chemistry/genetics/*metabolism ; Ovum ; Peptides/pharmacology ; Phosphopeptides/analysis/metabolism ; Phosphorylation ; Phosphoserine/metabolism ; Recombinant Fusion Proteins/metabolism ; Transfection ; Xenopus
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    Electronic ISSN: 1095-9203
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  • 8
    Publication Date: 2000-05-20
    Description: A high proportion of purebred Hampshire pigs carries the dominant RN- mutation, which causes high glycogen content in skeletal muscle. The mutation has beneficial effects on meat content but detrimental effects on processing yield. Here, it is shown that the mutation is a nonconservative substitution (R200Q) in the PRKAG3 gene, which encodes a muscle-specific isoform of the regulatory gamma subunit of adenosine monophosphate-activated protein kinase (AMPK). Loss-of-function mutations in the homologous gene in yeast (SNF4) cause defects in glucose metabolism, including glycogen storage. Further analysis of the PRKAG3 signaling pathway may provide insights into muscle physiology as well as the pathogenesis of noninsulin-dependent diabetes mellitus in humans, a metabolic disorder associated with impaired glycogen synthesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Milan, D -- Jeon, J T -- Looft, C -- Amarger, V -- Robic, A -- Thelander, M -- Rogel-Gaillard, C -- Paul, S -- Iannuccelli, N -- Rask, L -- Ronne, H -- Lundstrom, K -- Reinsch, N -- Gellin, J -- Kalm, E -- Roy, P L -- Chardon, P -- Andersson, L -- New York, N.Y. -- Science. 2000 May 19;288(5469):1248-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire de Genetique Cellulaire, Institut National de la Recherche Agronomique (INRA), 31326 Castanet-Tolosan, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10818001" target="_blank"〉PubMed〈/a〉
    Keywords: AMP-Activated Protein Kinases ; Alleles ; Amino Acid Sequence ; Amino Acid Substitution/genetics ; Animals ; Blotting, Northern ; Cloning, Molecular ; DNA, Complementary/isolation & purification ; Gene Expression Regulation, Enzymologic ; Glycogen/*metabolism ; Homozygote ; Humans ; Isoenzymes/biosynthesis/genetics/isolation & purification ; Molecular Sequence Data ; Muscle, Skeletal/*enzymology/metabolism ; Organ Specificity/genetics ; Phenotype ; *Point Mutation ; Protein Kinases/biosynthesis/*genetics/isolation & purification ; Sequence Homology, Amino Acid ; Swine
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  • 9
    Publication Date: 2004-08-07
    Description: Vesicle fusion involves vesicle tethering, docking, and membrane merger. We show that mitofusin, an integral mitochondrial membrane protein, is required on adjacent mitochondria to mediate fusion, which indicates that mitofusin complexes act in trans (that is, between adjacent mitochondria). A heptad repeat region (HR2) mediates mitofusin oligomerization by assembling a dimeric, antiparallel coiled coil. The transmembrane segments are located at opposite ends of the 95 angstrom coiled coil and provide a mechanism for organelle tethering. Consistent with this proposal, truncated mitofusin, in an HR2-dependent manner, causes mitochondria to become apposed with a uniform gap. Our results suggest that HR2 functions as a mitochondrial tether before fusion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koshiba, Takumi -- Detmer, Scott A -- Kaiser, Jens T -- Chen, Hsiuchen -- McCaffery, J Michael -- Chan, David C -- R01 GM62967/GM/NIGMS NIH HHS/ -- S10 RR019409-01/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2004 Aug 6;305(5685):858-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology, California Institute of Technology, 1200 East California Boulevard, MC114-96, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15297672" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Cell Line ; Crystallography, X-Ray ; Dimerization ; GTP Phosphohydrolases/*chemistry/*metabolism ; Humans ; Hybrid Cells ; Hydrophobic and Hydrophilic Interactions ; Intracellular Membranes/physiology/ultrastructure ; Membrane Fusion ; Mice ; Mitochondria/*metabolism/ultrastructure ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Protein Structure, Secondary ; Protein Structure, Tertiary
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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