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  • Articles  (78)
  • Amino Acid Sequence  (78)
  • 2000-2004  (78)
  • 2003  (78)
  • Physics  (78)
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  • Articles  (78)
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  • 2000-2004  (78)
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  • 1
    Publication Date: 2003-12-20
    Description: The Caenorhabditis elegans excretory canal is composed of a single elongated and branched cell that is tunneled by an inner lumen of apical character. Loss of the exc-4 gene causes a cystic enlargement of this intracellular tube. exc-4 encodes a member of the chloride intracellular channel (CLIC) family of proteins. EXC-4 protein localizes to various tubular membranes in distinct cell types, including the lumenal membrane of the excretory tubes. A conserved 55-amino acid domain enables EXC-4 translocation from the cytosol to the lumenal membrane. The tubular architecture of this membrane requires EXC-4 for both its formation and maintenance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berry, Katherine L -- Bulow, Hannes E -- Hall, David H -- Hobert, Oliver -- New York, N.Y. -- Science. 2003 Dec 19;302(5653):2134-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biophysics, Center for Neurobiology and Behavior, Columbia University, College of Physicians and Surgeons, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14684823" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Genetically Modified ; Caenorhabditis elegans/cytology/*embryology/growth & development/*physiology ; Caenorhabditis elegans Proteins/chemistry/genetics/*metabolism ; Cell Membrane/*metabolism ; Chloride Channels/chemistry/genetics/*metabolism ; Cytoplasm/metabolism ; Epithelial Cells/metabolism ; Gene Expression ; Genes, Reporter ; Green Fluorescent Proteins ; Hot Temperature ; Humans ; Intracellular Membranes/*metabolism ; Luminescent Proteins ; Molecular Sequence Data ; Morphogenesis ; Mutation ; Pinocytosis ; Promoter Regions, Genetic ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/metabolism ; Vacuoles/*metabolism/ultrastructure
    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
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2003-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sreenivasan, Aparna -- New York, N.Y. -- Science. 2003 Dec 19;302(5653):2050.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14684795" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Amino Acid Sequence ; Animals ; Calmodulin/metabolism ; Cell Nucleus/*metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Female ; Gonadal Dysgenesis, 46,XY/*etiology/genetics/metabolism ; Gonads/cytology/embryology/metabolism ; Humans ; Male ; Mice ; Mutation ; Nuclear Localization Signals ; Nuclear Pore/metabolism ; *Nuclear Proteins ; Protein Binding ; Sex-Determining Region Y Protein ; *Transcription Factors ; beta Karyopherins/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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  • 3
    Publication Date: 2003-12-06
    Description: In vitro studies have indicated that reactive oxygen species (ROS) and the oxidation of signaling molecules are important mediators of signal transduction. We have identified two pathways by which the altered redox chemistry of the clk-1 mutants of Caenorhabditis elegans acts in vivo on germline development. One pathway depends on the oxidation of an analog of vertebrate low density lipoprotein (LDL) and acts on the germline through the Ack-related tyrosine kinase (ARK-1) kinase and inositol trisphosphate (IP3) signaling. The other pathway is the oncogenic ras signaling pathway, whose action on germline as well as vulval development appears to be modulated by cytoplasmic ROS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shibata, Yukimasa -- Branicky, Robyn -- Landaverde, Irene Oviedo -- Hekimi, Siegfried -- New York, N.Y. -- Science. 2003 Dec 5;302(5651):1779-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, McGill University, 1205 Avenue Docteur Penfield, Montreal, Quebec, Canada, H3A 1B1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14657502" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apolipoproteins B/genetics/metabolism ; Base Sequence ; Caenorhabditis elegans/genetics/*growth & development/*metabolism ; Caenorhabditis elegans Proteins/chemistry/genetics/metabolism ; Cholesterol/metabolism ; Cloning, Molecular ; Disorders of Sex Development ; Female ; Inositol Phosphates/metabolism ; Lipoproteins, LDL/*metabolism ; Molecular Sequence Data ; Mutation ; Oxidation-Reduction ; Phenotype ; Protein-Tyrosine Kinases/metabolism ; RNA Interference ; Reactive Oxygen Species/*metabolism ; Transcription Factors/genetics/metabolism ; Vulva/growth & development ; ras Proteins/genetics/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: 2003-12-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eickmann, Markus -- Becker, Stephan -- Klenk, Hans-Dieter -- Doerr, Hans Wilhelm -- Stadler, Konrad -- Censini, Stefano -- Guidotti, Silvia -- Masignani, Vega -- Scarselli, Maria -- Mora, Marirosa -- Donati, Claudio -- Han, Jang H -- Song, Hyun Chul -- Abrignani, Sergio -- Covacci, Antonello -- Rappuoli, Rino -- New York, N.Y. -- Science. 2003 Nov 28;302(5650):1504-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14645828" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Amino Acid Sequence ; Consensus Sequence ; Coronavirus/chemistry/*classification ; Genome, Viral ; Membrane Glycoproteins/chemistry ; Nucleocapsid/chemistry ; *Phylogeny ; SARS Virus/chemistry/*classification/*genetics ; Spike Glycoprotein, Coronavirus ; Viral Envelope Proteins/chemistry ; Viral Matrix Proteins/chemistry ; Viral Proteins/chemistry
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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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  • 5
    Publication Date: 2003-12-04
    Description: During apoptosis, phosphatidylserine, which is normally restricted to the inner leaflet of the plasma membrane, is exposed on the surface of apoptotic cells and has been suggested to act as an "eat-me" signal to trigger phagocytosis. It is unclear how phagocytes recognize phosphatidylserine. Recently, a putative phosphatidylserine receptor (PSR) was identified and proposed to mediate recognition of phosphatidylserine and phagocytosis. We report that psr-1, the Caenorhabditis elegans homolog of PSR, is important for cell corpse engulfment. In vitro PSR-1 binds preferentially phosphatidylserine or cells with exposed phosphatidylserine. In C. elegans, PSR-1 acts in the same cell corpse engulfment pathway mediated by intracellular signaling molecules CED-2 (homologous to the human CrkII protein), CED-5 (DOCK180), CED-10 (Rac GTPase), and CED-12 (ELMO), possibly through direct interaction with CED-5 and CED-12. Our findings suggest that PSR-1 is likely an upstream receptor for the signaling pathway containing CED-2, CED-5, CED-10, and CED-12 proteins and plays an important role in recognizing phosphatidylserine during phagocytosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Xiaochen -- Wu, Yi-Chun -- Fadok, Valerie A -- Lee, Ming-Chia -- Gengyo-Ando, Keiko -- Cheng, Li-Chun -- Ledwich, Duncan -- Hsu, Pei-Ken -- Chen, Jia-Yun -- Chou, Bin-Kuan -- Henson, Peter -- Mitani, Shohei -- Xue, Ding -- New York, N.Y. -- Science. 2003 Nov 28;302(5650):1563-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder, CO 80309, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14645848" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; *Apoptosis ; Caenorhabditis elegans/cytology/embryology/metabolism/*physiology ; Caenorhabditis elegans Proteins/genetics/*metabolism ; Carrier Proteins/genetics/*metabolism ; *Cytoskeletal Proteins ; Embryo, Nonmammalian/cytology/metabolism ; Embryonic Development ; Humans ; Jumonji Domain-Containing Histone Demethylases ; Membrane Proteins/genetics/*metabolism ; Molecular Sequence Data ; Mutation ; *Phagocytosis ; Phosphatidylserines/metabolism ; Protein Binding ; Receptors, Cell Surface/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Recombinant Proteins/metabolism ; Signal Transduction ; rac GTP-Binding Proteins/genetics/metabolism
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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: 2003-12-03
    Description: The early genetic pathway(s) triggering the pathogenesis of coronary artery disease (CAD) and myocardial infarction (MI) remain largely unknown. Here, we describe an autosomal dominant form of CAD/MI (adCAD1) that is caused by the deletion of seven amino acids in transcription factor MEF2A. The deletion disrupts nuclear localization of MEF2A, reduces MEF2A-mediated transcription activation, and abolishes synergistic activation by MEF2A and by the transcription factor GATA-1 through a dominant-negative mechanism. The MEF2A protein demonstrates strong expression in the endothelium of coronary arteries. These results identify a pathogenic gene for a familial vascular disease with features of CAD and implicate the MEF2A signaling pathway in the pathogenesis of CAD/MI.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1618876/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1618876/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Lejin -- Fan, Chun -- Topol, Sarah E -- Topol, Eric J -- Wang, Qing -- R01 HL065630/HL/NHLBI NIH HHS/ -- R01 HL066251/HL/NHLBI NIH HHS/ -- R01 HL65630/HL/NHLBI NIH HHS/ -- R01 HL66251/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2003 Nov 28;302(5650):1578-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Cardiovascular Genetics, Department of Cardiovascular Medicine, Lerner Research Institute, Cleveland Clinic Foundation, Cleveland Clinic Lerner College of Medicine of Case Western Reserve University, Cleveland, OH 44195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14645853" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Amino Acid Sequence ; Animals ; Arteries/metabolism ; Base Sequence ; Cell Nucleus/metabolism ; Chromosomes, Human, Pair 15/genetics ; Coronary Artery Disease/*genetics/metabolism ; Coronary Vessels/metabolism ; DNA-Binding Proteins/chemistry/*genetics/metabolism ; Dimerization ; Endothelium, Vascular/metabolism ; Erythroid-Specific DNA-Binding Factors ; Female ; Fluorescent Antibody Technique ; GATA1 Transcription Factor ; Gene Expression ; Genes, Dominant ; Genetic Linkage ; Genetic Markers ; Genetic Predisposition to Disease ; Humans ; MADS Domain Proteins ; MEF2 Transcription Factors ; Male ; Middle Aged ; Molecular Sequence Data ; Muscle, Smooth/cytology/metabolism ; Myocardial Infarction/*genetics/metabolism ; Myogenic Regulatory Factors ; Pedigree ; Protein Binding ; Protein Conformation ; Protein Structure, Tertiary ; Protein Transport ; Rats ; Risk Factors ; *Sequence Deletion ; Signal Transduction ; Transcription Factors/chemistry/*genetics/metabolism ; Transcriptional Activation
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  • 7
    Publication Date: 2003-12-03
    Description: The BAR (Bin/amphiphysin/Rvs) domain is the most conserved feature in amphiphysins from yeast to human and is also found in endophilins and nadrins. We solved the structure of the Drosophila amphiphysin BAR domain. It is a crescent-shaped dimer that binds preferentially to highly curved negatively charged membranes. With its N-terminal amphipathic helix and BAR domain (N-BAR), amphiphysin can drive membrane curvature in vitro and in vivo. The structure is similar to that of arfaptin2, which we find also binds and tubulates membranes. From this, we predict that BAR domains are in many protein families, including sorting nexins, centaurins, and oligophrenins. The universal and minimal BAR domain is a dimerization, membrane-binding, and curvature-sensing module.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Peter, Brian J -- Kent, Helen M -- Mills, Ian G -- Vallis, Yvonne -- Butler, P Jonathan G -- Evans, Philip R -- McMahon, Harvey T -- New York, N.Y. -- Science. 2004 Jan 23;303(5657):495-9. Epub 2003 Nov 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council (MRC) Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14645856" target="_blank"〉PubMed〈/a〉
    Keywords: ADP-Ribosylation Factors/chemistry/genetics/metabolism ; *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; COP-Coated Vesicles/metabolism ; Carrier Proteins/chemistry/genetics/metabolism ; Cell Membrane/chemistry/metabolism ; Clathrin/metabolism ; Clathrin-Coated Vesicles/metabolism ; Coated Vesicles/chemistry/*metabolism ; Crystallography, X-Ray ; *Cytoskeletal Proteins ; Dimerization ; Drosophila/chemistry ; Drosophila Proteins/*chemistry/*metabolism ; GTPase-Activating Proteins/chemistry/metabolism ; Liposomes/chemistry/*metabolism ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Nerve Tissue Proteins/*chemistry/genetics/*metabolism ; Nuclear Proteins/chemistry/metabolism ; Phosphoproteins/chemistry/metabolism ; Protein Binding ; Protein Structure, Secondary ; *Protein Structure, Tertiary
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2003-12-03
    Description: The sterol regulatory element-binding protein 2 (SREBP-2), a nuclear transcription factor that is essential for cholesterol metabolism, enters the nucleus through a direct interaction of its helix-loop-helix leucine zipper domain with importin-beta. We show the crystal structure of importin-beta complexed with the active form of SREBP-2. Importin-beta uses characteristic long helices like a pair of chopsticks to interact with an SREBP-2 dimer. Importin-beta changes its conformation to reveal a pseudo-twofold symmetry on its surface structure so that it can accommodate a symmetric dimer molecule. Importin-beta may use a similar strategy to recognize other dimeric cargoes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Soo Jae -- Sekimoto, Toshihiro -- Yamashita, Eiki -- Nagoshi, Emi -- Nakagawa, Atsushi -- Imamoto, Naoko -- Yoshimura, Masato -- Sakai, Hiroaki -- Chong, Khoon Tee -- Tsukihara, Tomitake -- Yoneda, Yoshihiro -- New York, N.Y. -- Science. 2003 Nov 28;302(5650):1571-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Protein Research, Graduate School of Frontier Biosciences, Osaka University, Yamadaoka 2-2, Suita, Osaka 565-0871, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14645851" target="_blank"〉PubMed〈/a〉
    Keywords: *Active Transport, Cell Nucleus ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Binding Sites ; Cell Nucleus/metabolism ; Crystallography, X-Ray ; DNA-Binding Proteins/*chemistry/*metabolism ; Dimerization ; Helix-Loop-Helix Motifs ; Humans ; Hydrophobic and Hydrophilic Interactions ; Mice ; Models, Molecular ; Molecular Sequence Data ; Nuclear Localization Signals ; Nuclear Pore/metabolism ; Protein Binding ; *Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Sterol Regulatory Element Binding Protein 2 ; Transcription Factors/*chemistry/*metabolism ; beta Karyopherins/*chemistry/*metabolism ; ran GTP-Binding Protein/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2003-11-25
    Description: A major challenge of computational protein design is the creation of novel proteins with arbitrarily chosen three-dimensional structures. Here, we used a general computational strategy that iterates between sequence design and structure prediction to design a 93-residue alpha/beta protein called Top7 with a novel sequence and topology. Top7 was found experimentally to be folded and extremely stable, and the x-ray crystal structure of Top7 is similar (root mean square deviation equals 1.2 angstroms) to the design model. The ability to design a new protein fold makes possible the exploration of the large regions of the protein universe not yet observed in nature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuhlman, Brian -- Dantas, Gautam -- Ireton, Gregory C -- Varani, Gabriele -- Stoddard, Barry L -- Baker, David -- New York, N.Y. -- Science. 2003 Nov 21;302(5649):1364-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Washington, Seattle, WA 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14631033" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Amino Acid Sequence ; Circular Dichroism ; Computational Biology ; Computer Graphics ; Computer Simulation ; Crystallization ; Crystallography, X-Ray ; Databases, Protein ; Models, Molecular ; Molecular Sequence Data ; Monte Carlo Method ; Nuclear Magnetic Resonance, Biomolecular ; *Protein Conformation ; Protein Denaturation ; *Protein Engineering ; *Protein Folding ; Protein Structure, Secondary ; Proteins/*chemistry ; *Software ; Solubility ; Temperature ; Thermodynamics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2003-11-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jones, David T -- New York, N.Y. -- Science. 2003 Nov 21;302(5649):1347-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Computer Science and Department of Biochemistry and Molecular Biology, University College, London WC1E 6BT, UK. dtj@cs.ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14631028" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Amino Acid Sequence ; Computational Biology ; Computer Graphics ; Computer Simulation ; Crystallography, X-Ray ; Models, Molecular ; Nuclear Magnetic Resonance, Biomolecular ; *Protein Conformation ; *Protein Engineering ; *Protein Folding ; Proteins/*chemistry ; *Software
    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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