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  • 1
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    Ecology. A head start for some redstarts (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hill, Geoffrey E -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2201-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Science, Auburn University, Auburn, AL 36849, USA. ghill@acesag.auburn.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15619587" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Migration ; Animals ; Carotenoids/*analysis ; Feathers/*chemistry/growth & development ; Female ; Hydrogen/*analysis ; Isotopes ; Life Cycle Stages ; Male ; *Molting ; Pigmentation ; *Reproduction ; Seasons ; Songbirds/growth & development/*physiology ; Time Factors
    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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    Genetics. A ruff theory of evolution: gene stutters drive dog shape (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennisi, Elizabeth -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2172.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618495" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Breeding ; Dogs/*anatomy & histology/*genetics/growth & development ; Genetic Variation ; Hindlimb ; Neoplasm Proteins/genetics ; Nose/anatomy & histology ; Phenotype ; Selection, Genetic ; Skull/anatomy & histology ; *Tandem Repeat Sequences ; Toes/anatomy & histology ; Transcription Factors/genetics
    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
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    Mouse brain organization revealed through direct genome-scale TF expression analysis (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: In the developing brain, transcription factors (TFs) direct the formation of a diverse array of neurons and glia. We identifed 1445 putative TFs in the mouse genome. We used in situ hybridization to map the expression of over 1000 of these TFs and TF-coregulator genes in the brains of developing mice. We found that 349 of these genes showed restricted expression patterns that were adequate to describe the anatomical organization of the brain. We provide a comprehensive inventory of murine TFs and their expression patterns in a searchable brain atlas database.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gray, Paul A -- Fu, Hui -- Luo, Ping -- Zhao, Qing -- Yu, Jing -- Ferrari, Annette -- Tenzen, Toyoaki -- Yuk, Dong-In -- Tsung, Eric F -- Cai, Zhaohui -- Alberta, John A -- Cheng, Le-Ping -- Liu, Yang -- Stenman, Jan M -- Valerius, M Todd -- Billings, Nathan -- Kim, Haesun A -- Greenberg, Michael E -- McMahon, Andrew P -- Rowitch, David H -- Stiles, Charles D -- Ma, Qiufu -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2255-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618518" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Newborn ; Brain/anatomy & histology/embryology/*growth & development/*metabolism ; Cloning, Molecular ; Corpus Striatum/anatomy & histology/embryology/growth & development/metabolism ; DNA Primers ; Databases, Factual ; *Gene Expression Profiling ; *Genome ; Hypothalamus/anatomy & histology/embryology/growth & development/metabolism ; In Situ Hybridization ; Mesencephalon/anatomy & histology/embryology/growth & development/metabolism ; Mice ; Neocortex/anatomy & histology/embryology/growth & development/metabolism ; Polymerase Chain Reaction ; Rhombencephalon/anatomy & histology/embryology/growth & development/metabolism ; Spinal Cord/anatomy & histology/embryology/growth & development/metabolism ; Thalamus/anatomy & histology/embryology/growth & development/metabolism ; Transcription Factors/*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
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    Cumulative sperm whale bone damage and the bends (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: Diving mosasaurs, plesiosaurs, and humans develop dysbaric osteonecrosis from end-artery nitrogen embolism ("the bends") in certain bones. Sixteen sperm whales from calves to large adults showed a size-related development of osteonecrosis in chevron and rib bone articulations, deltoid crests, and nasal bones. Occurrence in animals from the Pacific and Atlantic oceans over 111 years made a pathophysiological diagnosis of dysbarism most likely. Decompression avoidance therefore may constrain diving behavior. This suggests why some deep-diving mammals show periodic shallow-depth activity and why gas emboli are found in animals driven to surface precipitously by acoustic stressors such as mid-frequency sonar systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moore, Michael J -- Early, Greg A -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2215.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA. mmoore@whoi.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618509" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlantic Ocean ; Body Size ; Bone Density ; Bone Remodeling ; Bone and Bones/*pathology ; Decompression Sickness/complications/pathology/*veterinary ; *Diving ; Female ; Male ; Osteonecrosis/etiology/pathology/*veterinary ; Pacific Ocean ; *Whales/anatomy & histology/physiology
    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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  • 5
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    Reduced competition and altered feeding behavior among marine snails after a mass extinction (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: Extinction may alter competitive interactions among surviving species, affecting their subsequent recovery and evolution, but these processes remain poorly understood. Analysis of predation traces produced by shell-drilling muricid snails on bivalve prey reveals that species interactions were substantially different before and after a Plio-Pleistocene mass extinction in the western Atlantic. Muricids edge- and wall-drilled their prey in the Pliocene, but Pleistocene and Recent snails attacked prey only through the shell wall. Experiments with living animals suggest that intense competition induces muricid snails to attack shell edges. Pliocene predators, therefore, probably competed for resources more intensely than their post-extinction counterparts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dietl, Gregory P -- Herbert, Gregory S -- Vermeij, Geerat J -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2229-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Marine Science, University of North Carolina, Wilmington, NC 28409, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618513" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Competitive Behavior ; *Ecosystem ; Feeding Behavior ; Fossils ; *Mollusca ; Population Dynamics ; Predatory Behavior ; Snails/*physiology ; Time
    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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  • 6
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    Reproductive effort, molting latitude, and feather color in a migratory songbird (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: Toward the end of the breeding season, migratory songbirds face crucial tradeoffs between the timing of reproduction, molt, and migration. Using stable hydrogen isotopes, we show that male American redstarts investing in high levels of reproduction late in the season adopt a unique strategy of combining molt and migration. Tail feathers molted during migration also reflect less orange-red light, indicating reduced carotenoid concentration. Thus, we show how reproduction in a migratory animal can influence both life history strategies (location of molt) and social signals (feather color) during subsequent periods of the annual cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norris, D Ryan -- Marra, Peter P -- Montgomerie, Robert -- Kyser, T Kurt -- Ratcliffe, Laurene M -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2249-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Queen's University, Kingston, Ontario K7L 3N6, Canada. ryann@biology.queensu.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618516" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Migration ; Animals ; Breeding ; Carotenoids/*analysis ; Feathers/*chemistry ; Female ; Hydrogen/analysis ; Isotopes ; Life Cycle Stages ; Male ; *Molting ; *Pigmentation ; *Reproduction ; Seasons ; Songbirds/growth & development/*physiology ; Time Factors
    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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  • 7
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    Role of the kinase MST2 in suppression of apoptosis by the proto-oncogene product Raf-1 (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: The ablation of the protein kinase Raf-1 renders cells hypersensitive to apoptosis despite normal regulation of extracellular signal-regulated kinases, which suggests that apoptosis protection is mediated by a distinct pathway. We used proteomic analysis of Raf-1 signaling complexes to show that Raf-1 counteracts apoptosis by suppressing the activation of mammalian sterile 20-like kinase (MST2). Raf-1 prevents dimerization and phosphorylation of the activation loop of MST2 independently of its protein kinase activity. Depletion of MST2 from Raf-1-/- mouse or human cells abrogated sensitivity to apoptosis, whereas overexpression of MST2 induced apoptosis. Conversely, depletion of Raf-1 from Raf-1+/+ mouse or human cells led to MST2 activation and apoptosis. The concomitant depletion of both Raf-1 and MST2 prevented apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Neill, Eric -- Rushworth, Linda -- Baccarini, Manuela -- Kolch, Walter -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2267-70.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Beatson Institute for Cancer Research, Garscube Estate, Switchback Road, Glasgow G61 1BD, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618521" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD95/metabolism ; *Apoptosis ; COS Cells ; Cell Line, Tumor ; Dimerization ; Humans ; Mice ; Phosphorylation ; Protein-Serine-Threonine Kinases/genetics/*metabolism ; Proteomics ; Proto-Oncogene Proteins c-raf/genetics/*metabolism ; RNA, Small Interfering ; Signal Transduction ; Staurosporine/pharmacology ; Transfection
    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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  • 8
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    Cell biology. A technical fix for an ethical bind? (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holden, Constance -- Vogel, Gretchen -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2174-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618497" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Bioethical Issues ; Blastocyst ; Cell Differentiation ; Cell Division ; Cell Fusion ; Cell Line ; Cell Nucleus/physiology ; Cloning, Organism ; Embryo, Mammalian/cytology/physiology ; *Ethics, Research ; Female ; Humans ; Nuclear Transfer Techniques ; Oocytes/physiology ; Parthenogenesis ; Patents as Topic ; *Pluripotent Stem Cells ; Research Embryo Creation ; Stem Cell Transplantation
    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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  • 9
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    Beta-arrestin 2 regulates zebrafish development through the hedgehog signaling pathway (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: beta-arrestins are multifunctional proteins that act as scaffolds and transducers of intracellular signals from heptahelical transmembrane-spanning receptors (7TMR). Hedgehog (Hh) signaling, which uses the putative 7TMR, Smoothened, is established as a fundamental pathway in development, and unregulated Hh signaling is associated with certain malignancies. Here, we show that the functional knockdown of beta-arrestin 2 in zebrafish embryos recapitulates the many phenotypes of Hh pathway mutants. Expression of wild-type beta-arrestin 2, or constitutive activation of the Hh pathway downstream of Smoothened, rescues the phenotypes caused by beta-arrestin 2 deficiency. These results suggest that a functional interaction between beta-arrestin 2 and Smoothened may be critical to regulate Hh signaling in zebrafish development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilbanks, Alyson M -- Fralish, Gregory B -- Kirby, Margaret L -- Barak, Larry S -- Li, Yin-Xiong -- Caron, Marc G -- GM069086-01/GM/NIGMS NIH HHS/ -- HL36059/HL/NHLBI NIH HHS/ -- HL61365/HL/NHLBI NIH HHS/ -- NS19576/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2264-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Center for Models of Human Disease, Institute for Genome Science and Policy, Duke University Medical Center, Durham, NC 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618520" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arrestins/genetics/*physiology ; Cell Differentiation ; Cyclic AMP-Dependent Protein Kinases/genetics/metabolism ; Embryo, Nonmammalian/metabolism ; Gene Expression Regulation, Developmental ; Hedgehog Proteins ; Homeodomain Proteins/genetics/metabolism ; In Situ Hybridization ; Membrane Proteins/genetics/metabolism ; Muscle Cells/cytology ; Muscle Fibers, Skeletal/cytology ; Mutation ; Phenotype ; Receptors, Cell Surface ; Receptors, G-Protein-Coupled/genetics/physiology ; Repressor Proteins/genetics/metabolism ; *Signal Transduction ; Trans-Activators/genetics/*metabolism ; Transcription Factors/genetics/metabolism ; Zebrafish/*embryology/genetics/*metabolism ; Zebrafish Proteins/genetics/metabolism/*physiology
    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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  • 10
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    Dephosphorylation of the calcium pump coupled to counterion occlusion (2004)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2004-12-25
    Description: P-type ATPases extract energy by hydrolysis of adenosine triphosphate (ATP) in two steps, formation and breakdown of a covalent phosphoenzyme intermediate. This process drives active transport and countertransport of the cation pumps. We have determined the crystal structure of rabbit sarcoplasmic reticulum Ca2+ adenosine triphosphatase in complex with aluminum fluoride, which mimics the transition state of hydrolysis of the counterion-bound (protonated) phosphoenzyme. On the basis of structural analysis and biochemical data, we find this form to represent an occluded state of the proton counterions. Hydrolysis is catalyzed by the conserved Thr-Gly-Glu-Ser motif, and it exploits an associative nucleophilic reaction mechanism of the same type as phosphoryl transfer from ATP. On this basis, we propose a general mechanism of occluded transition states of Ca2+ transport and H+ countertransport coupled to phosphorylation and dephosphorylation, respectively.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olesen, Claus -- Sorensen, Thomas Lykke-Moller -- Nielsen, Rikke Christina -- Moller, Jesper Vuust -- Nissen, Poul -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2251-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Structural Biology, Department of Molecular Biology, University of Aarhus, Gustav Wieds Vej 10C, DK-8000 Aarhus C, Denmark.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618517" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Diphosphate/chemistry/metabolism ; Adenosine Triphosphate/metabolism ; Aluminum Compounds/chemistry ; Amino Acid Motifs ; Animals ; Binding Sites ; Biological Transport, Active ; Calcium/metabolism ; Calcium-Transporting ATPases/*chemistry/*metabolism ; Chemistry, Physical ; Crystallization ; Crystallography, X-Ray ; Cytoplasm/metabolism ; Fluorides/chemistry ; Hydrolysis ; Ion Transport ; Models, Chemical ; Models, Molecular ; Phosphorylation ; Physicochemical Phenomena ; Protein Conformation ; Protein Structure, Tertiary ; *Protons ; Rabbits ; Sarcoplasmic Reticulum/enzymology ; Thapsigargin ; Thermodynamics
    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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