ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles  (263)
  • Male  (166)
  • Signal Transduction  (57)
  • Models, Molecular
  • 2005-2009  (263)
  • 1975-1979
  • 2006  (263)
Collection
  • Articles  (263)
Years
  • 2005-2009  (263)
  • 1975-1979
Year
  • 1
    Publication Date: 2006-12-23
    Description: Iron regulatory protein 1 (IRP1) binds iron-responsive elements (IREs) in messenger RNAs (mRNAs), to repress translation or degradation, or binds an iron-sulfur cluster, to become a cytosolic aconitase enzyme. The 2.8 angstrom resolution crystal structure of the IRP1:ferritin H IRE complex shows an open protein conformation compared with that of cytosolic aconitase. The extended, L-shaped IRP1 molecule embraces the IRE stem-loop through interactions at two sites separated by approximately 30 angstroms, each involving about a dozen protein:RNA bonds. Extensive conformational changes related to binding the IRE or an iron-sulfur cluster explain the alternate functions of IRP1 as an mRNA regulator or enzyme.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Walden, William E -- Selezneva, Anna I -- Dupuy, Jerome -- Volbeda, Anne -- Fontecilla-Camps, Juan C -- Theil, Elizabeth C -- Volz, Karl -- DK20251/DK/NIDDK NIH HHS/ -- DK47281/DK/NIDDK NIH HHS/ -- GM47522/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Dec 22;314(5807):1903-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, University of Illinois at Chicago, Chicago, IL 60612-7344, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17185597" target="_blank"〉PubMed〈/a〉
    Keywords: Apoferritins/*genetics ; Binding Sites ; Crystallography, X-Ray ; Hydrogen Bonding ; Iron/metabolism ; Iron Regulatory Protein 1/*chemistry/*metabolism ; Models, Molecular ; Nucleic Acid Conformation ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA, Messenger/chemistry/genetics/metabolism ; *Regulatory Sequences, Ribonucleic Acid ; *Response Elements ; Sulfur/metabolism ; Untranslated Regions/*chemistry/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    Publication Date: 2006-12-23
    Description: Mast seeding, the intermittent, synchronous production of large seed crops by a population of plants, is a well-known example of resource pulses that create lagged responses in successive trophic levels of ecological communities. These lags arise because seed predators are thought capable of increasing reproduction and population size only after the resource pulse is available for consumption. The resulting satiation of predators is a widely cited explanation for the evolution of masting. Our study shows that both American and Eurasian tree squirrels anticipate resource pulses and increase reproductive output before a masting event, thereby increasing population size in synchrony with the resource pulse and eliminating the population lag thought to be universal in resource pulse systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boutin, Stan -- Wauters, Lucas A -- McAdam, Andrew G -- Humphries, Murray M -- Tosi, Guido -- Dhondt, Andre A -- New York, N.Y. -- Science. 2006 Dec 22;314(5807):1928-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada. stan.boutin@ualberta.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17185600" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Belgium ; Cues ; Feeding Behavior ; Female ; Italy ; Litter Size ; Male ; Population Growth ; *Reproduction ; Sciuridae/*physiology ; Seasons ; *Seeds/growth & development ; Trees ; Yukon Territory
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Publication Date: 2006-12-23
    Description: Many species express endogenous cycles in physiology and behavior that allow anticipation of the seasons. The anatomical and cellular bases of these circannual rhythms have not been defined. Here, we provide strong evidence using an in vivo Soay sheep model that the circannual regulation of prolactin secretion, and its associated biology, derive from a pituitary-based timing mechanism. Circannual rhythm generation is seen as the product of the interaction between melatonin-regulated timer cells and adjacent prolactin-secreting cells, which together function as an intrapituitary "pacemaker-slave" timer system. These new insights open the way for a molecular analysis of long-term timing mechanisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lincoln, Gerald A -- Clarke, Iain J -- Hut, Roelof A -- Hazlerigg, David G -- G0600678/Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2006 Dec 22;314(5807):1941-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Reproductive Biology, University of Edinburgh, Queen's Medical Research Institute, Edinburgh, Scotland. g.lincoln@hrsu.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17185605" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Clocks/*physiology ; Circadian Rhythm ; Cues ; Denervation ; Lactotrophs/physiology ; Male ; Melatonin/blood/*physiology ; Models, Biological ; Motor Activity ; Photoperiod ; Pineal Gland/innervation/physiology ; Pituitary Gland, Anterior/*physiology/secretion ; Prolactin/*secretion ; Seasons ; Sheep/blood/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Publication Date: 2006-12-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hanauer, David I -- Jacobs-Sera, Deborah -- Pedulla, Marisa L -- Cresawn, Steven G -- Hendrix, Roger W -- Hatfull, Graham F -- GM51975/GM/NIGMS NIH HHS/ -- RR16455/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2006 Dec 22;314(5807):1880-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate Program in Composition and TESOL, Department of English, Indiana University of Pennsylvania, Indiana, PA 15705, USA. hanauer@iup.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17185586" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Authorship ; *Bacteriophages/genetics/isolation & purification ; Biomedical Research/*education ; Female ; Genome, Viral ; Genomics/*education ; Humans ; Male ; Mentors ; Pennsylvania ; Science/*education ; Sequence Analysis, DNA ; *Teaching ; Universities
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2006-12-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Linden, Joel -- New York, N.Y. -- Science. 2006 Dec 15;314(5806):1689-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Virginia, Charlottesville, VA 22908, USA. jlinden@virginia.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17170280" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/metabolism ; Adenosine Monophosphate/metabolism ; Adenosine Triphosphate/*metabolism ; Animals ; Apyrase/pharmacology ; *Autocrine Communication ; Blood Platelets/metabolism ; Cell Membrane/metabolism ; *Chemotaxis, Leukocyte/drug effects ; Endothelial Cells/metabolism ; Mice ; Models, Biological ; N-Formylmethionine Leucyl-Phenylalanine ; Neutrophils/drug effects/*metabolism/physiology ; Receptor, Adenosine A3/metabolism ; Receptors, Purinergic/*metabolism ; Receptors, Purinergic P2/metabolism ; Receptors, Purinergic P2Y2 ; Respiratory Burst/drug effects ; Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Publication Date: 2006-12-16
    Description: Cells must amplify external signals to orient and migrate in chemotactic gradient fields. We find that human neutrophils release adenosine triphosphate (ATP) from the leading edge of the cell surface to amplify chemotactic signals and direct cell orientation by feedback through P2Y2 nucleotide receptors. Neutrophils rapidly hydrolyze released ATP to adenosine that then acts via A3-type adenosine receptors, which are recruited to the leading edge, to promote cell migration. Thus, ATP release and autocrine feedback through P2Y2 and A3 receptors provide signal amplification, controlling gradient sensing and migration of neutrophils.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Yu -- Corriden, Ross -- Inoue, Yoshiaki -- Yip, Linda -- Hashiguchi, Naoyuki -- Zinkernagel, Annelies -- Nizet, Victor -- Insel, Paul A -- Junger, Wolfgang G -- GM-60475/GM/NIGMS NIH HHS/ -- GM-66232/GM/NIGMS NIH HHS/ -- PR043034/PR/OCPHP CDC HHS/ -- R01 GM-51477/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Dec 15;314(5806):1792-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgery, University of California San Diego, San Diego, CA 92103, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17170310" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/metabolism/pharmacology ; Adenosine A3 Receptor Agonists ; Adenosine A3 Receptor Antagonists ; Adenosine Triphosphate/analogs & derivatives/*metabolism/pharmacology ; Animals ; *Autocrine Communication ; Cell Membrane/metabolism ; *Chemotaxis, Leukocyte/drug effects ; Cytoplasmic Granules/metabolism ; HL-60 Cells ; Humans ; Hydrolysis ; Mice ; Mice, Knockout ; Neutrophils/drug effects/metabolism/*physiology ; Purinergic P2 Receptor Antagonists ; Receptor, Adenosine A3/*metabolism ; Receptors, Purinergic P2/*metabolism ; Receptors, Purinergic P2Y2 ; Signal Transduction ; Suramin/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Publication Date: 2006-12-16
    Description: Sequencing of 81 entire human mitochondrial DNAs (mtDNAs) belonging to haplogroups M1 and U6 reveals that these predominantly North African clades arose in southwestern Asia and moved together to Africa about 40,000 to 45,000 years ago. Their arrival temporally overlaps with the event(s) that led to the peopling of Europe by modern humans and was most likely the result of the same change in climate conditions that allowed humans to enter the Levant, opening the way to the colonization of both Europe and North Africa. Thus, the early Upper Palaeolithic population(s) carrying M1 and U6 did not return to Africa along the southern coastal route of the "out of Africa" exit, but from the Mediterranean area; and the North African Dabban and European Aurignacian industries derived from a common Levantine source.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olivieri, Anna -- Achilli, Alessandro -- Pala, Maria -- Battaglia, Vincenza -- Fornarino, Simona -- Al-Zahery, Nadia -- Scozzari, Rosaria -- Cruciani, Fulvio -- Behar, Doron M -- Dugoujon, Jean-Michel -- Coudray, Clotilde -- Santachiara-Benerecetti, A Silvana -- Semino, Ornella -- Bandelt, Hans-Jurgen -- Torroni, Antonio -- New York, N.Y. -- Science. 2006 Dec 15;314(5806):1767-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dipartimento di Genetica e Microbiologia, Universita di Pavia, Via Ferrata 1, 27100 Pavia, Italy.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17170302" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Asia ; Chromosomes, Human, Y/genetics ; Climate ; DNA, Mitochondrial/*genetics ; *Emigration and Immigration ; Europe ; Female ; Genetic Variation ; Geography ; *Haplotypes ; Humans ; Male ; Mediterranean Region ; Molecular Sequence Data ; Phylogeny ; *Population Dynamics ; Sequence Analysis, DNA ; Time
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    Publication Date: 2006-12-16
    Description: We report a signaling mechanism in rats between mother and fetus aimed at preparing fetal neurons for delivery. In immature neurons, gamma-aminobutyric acid (GABA) is the primary excitatory neurotransmitter. We found that, shortly before delivery, there is a transient reduction in the intracellular chloride concentration and an excitatory-to-inhibitory switch of GABA actions. These events were triggered by oxytocin, an essential maternal hormone for labor. In vivo administration of an oxytocin receptor antagonist before delivery prevented the switch of GABA actions in fetal neurons and aggravated the severity of anoxic episodes. Thus, maternal oxytocin inhibits fetal neurons and increases their resistance to insults during delivery.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tyzio, Roman -- Cossart, Rosa -- Khalilov, Ilgam -- Minlebaev, Marat -- Hubner, Christian A -- Represa, Alfonso -- Ben-Ari, Yehezkel -- Khazipov, Rustem -- New York, N.Y. -- Science. 2006 Dec 15;314(5806):1788-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Neurobiologie de la Mediterranee, INSERM U29, Universite de la Mediterranee, Campus Scientifique de Luminy, Boite Postale 13, 13273 Marseille Cedex 09, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17170309" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Animals, Newborn ; Benzamides/pharmacology ; Chlorides/metabolism ; Female ; Fetal Hypoxia/physiopathology ; Fetus/*physiology ; GABA-A Receptor Agonists ; GABA-A Receptor Antagonists ; Hippocampus/cytology/*embryology/physiology ; In Vitro Techniques ; Indoles/pharmacology ; Maternal-Fetal Exchange ; *Neural Inhibition ; Neurons/*physiology ; Oxytocin/pharmacology/*physiology ; *Parturition ; Patch-Clamp Techniques ; Pregnancy ; Rats ; Rats, Wistar ; Receptors, GABA-A/physiology ; Receptors, Oxytocin/antagonists & inhibitors ; Signal Transduction ; Sodium Potassium Chloride Symporter Inhibitors ; Sodium-Potassium-Chloride Symporters/metabolism ; Solute Carrier Family 12, Member 2 ; Vasotocin/analogs & derivatives/pharmacology ; gamma-Aminobutyric Acid/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Publication Date: 2006-12-13
    Description: Mounting evidence has revealed pathological interactions between HIV and malaria in dually infected patients, but the public health implications of the interplay have remained unclear. A transient almost one-log elevation in HIV viral load occurs during febrile malaria episodes; in addition, susceptibility to malaria is enhanced in HIV-infected patients. A mathematical model applied to a setting in Kenya with an adult population of roughly 200,000 estimated that, since 1980, the disease interaction may have been responsible for 8,500 excess HIV infections and 980,000 excess malaria episodes. Co-infection might also have facilitated the geographic expansion of malaria in areas where HIV prevalence is high. Hence, transient and repeated increases in HIV viral load resulting from recurrent co-infection with malaria may be an important factor in promoting the spread of HIV in sub-Saharan Africa.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abu-Raddad, Laith J -- Patnaik, Padmaja -- Kublin, James G -- P30 AI 27757/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2006 Dec 8;314(5805):1603-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Statistical Center for HIV/AIDS Research and Prevention, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA. laith@scharp.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17158329" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Africa South of the Sahara/epidemiology ; Antimalarials/therapeutic use ; Disease Susceptibility ; Endemic Diseases ; Female ; HIV Infections/*complications/*epidemiology/transmission/virology ; HIV-1/physiology ; Humans ; Kenya/epidemiology ; Malaria, Falciparum/*complications/drug therapy/*epidemiology/transmission ; Male ; Mathematics ; Models, Biological ; Prevalence ; Recurrence ; Sexual Behavior ; Viral Load ; Viremia ; Virus Replication
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Publication Date: 2006-12-13
    Description: The crystal structure of a putative metal-chelate-type adenosine triphosphate (ATP)-binding cassette (ABC) transporter encoded by genes HI1470 and HI1471 of Haemophilus influenzae has been solved at 2.4 angstrom resolution. The permeation pathway exhibits an inward-facing conformation, in contrast to the outward-facing state previously observed for the homologous vitamin B12 importer BtuCD. Although the structures of both HI1470/1 and BtuCD have been solved in nucleotide-free states, the pairs of ABC subunits in these two structures differ by a translational shift in the plane of the membrane that coincides with a repositioning of the membrane-spanning subunits. The differences observed between these ABC transporters involve relatively modest rearrangements and may serve as structural models for inward- and outward-facing conformations relevant to the alternating access mechanism of substrate translocation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pinkett, H W -- Lee, A T -- Lum, P -- Locher, K P -- Rees, D C -- GM45162/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 Jan 19;315(5810):373-7. Epub 2006 Dec 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry and Chemical Engineering, Howard Hughes Medical Institute, MC 114-96, California Institute of Technology (Caltech), Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17158291" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Binding Cassette Transporters/*chemistry ; Bacterial Proteins/*chemistry ; Catalytic Domain ; Crystallography, X-Ray ; Dimerization ; Haemophilus influenzae/*chemistry ; Metals/metabolism ; Models, Molecular ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...