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  • Animals  (2)
  • Bacterial Proteins/*physiology  (1)
  • GEOPHYSICS
  • Humans
  • Isoptera
  • Morphogenesis
  • 2005-2009  (2)
  • 2000-2004  (1)
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  • 1
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    Unknown
    A genomic regulatory network for development (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-02
    Description: Development of the body plan is controlled by large networks of regulatory genes. A gene regulatory network that controls the specification of endoderm and mesoderm in the sea urchin embryo is summarized here. The network was derived from large-scale perturbation analyses, in combination with computational methodologies, genomic data, cis-regulatory analysis, and molecular embryology. The network contains over 40 genes at present, and each node can be directly verified at the DNA sequence level by cis-regulatory analysis. Its architecture reveals specific and general aspects of development, such as how given cells generate their ordained fates in the embryo and why the process moves inexorably forward in developmental time.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Davidson, Eric H -- Rast, Jonathan P -- Oliveri, Paola -- Ransick, Andrew -- Calestani, Cristina -- Yuh, Chiou-Hwa -- Minokawa, Takuya -- Amore, Gabriele -- Hinman, Veronica -- Arenas-Mena, Cesar -- Otim, Ochan -- Brown, C Titus -- Livi, Carolina B -- Lee, Pei Yun -- Revilla, Roger -- Rust, Alistair G -- Pan, Zheng jun -- Schilstra, Maria J -- Clarke, Peter J C -- Arnone, Maria I -- Rowen, Lee -- Cameron, R Andrew -- McClay, David R -- Hood, Leroy -- Bolouri, Hamid -- GM-61005/GM/NIGMS NIH HHS/ -- HD-37105/HD/NICHD NIH HHS/ -- RR-06591/RR/NCRR NIH HHS/ -- RR-15044/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 1;295(5560):1669-78.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA. davidson@caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11872831" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Lineage ; Computational Biology ; Embryonic Development ; Endoderm/cytology/*physiology ; Gene Expression Profiling ; *Gene Expression Regulation, Developmental ; Genes, Regulator ; *Genome ; Mesoderm/cytology/*physiology ; Models, Biological ; Models, Genetic ; Morphogenesis ; Regulatory Sequences, Nucleic Acid ; Sea Urchins/*embryology/*genetics ; Stem Cells/physiology ; Systems Theory
    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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    Ordered phosphorylation governs oscillation of a three-protein circadian clock (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-10-06
    Description: The simple circadian oscillator found in cyanobacteria can be reconstituted in vitro using three proteins-KaiA, KaiB, and KaiC. The total phosphorylation level of KaiC oscillates with a circadian period, but the mechanism underlying its sustained oscillation remains unclear. We have shown that four forms of KaiC differing in their phosphorylation state appear in an ordered pattern arising from the intrinsic autokinase and autophosphatase rates of KaiC and their modulation by KaiA. Kinetic and biochemical data indicate that one of these phosphoforms inhibits the activity of KaiA through interaction with KaiB, providing the crucial feedback that sustains oscillation. A mathematical model constrained by experimental data quantitatively reproduces the circadian period and the distinctive dynamics of the four phosphoforms.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2427396/" 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/PMC2427396/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rust, Michael J -- Markson, Joseph S -- Lane, William S -- Fisher, Daniel S -- O'Shea, Erin K -- New York, N.Y. -- Science. 2007 Nov 2;318(5851):809-12. Epub 2007 Oct 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Faculty of Arts and Sciences Center for Systems Biology, Departments of Molecular and Cellular Biology and of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17916691" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*physiology ; Biological Clocks/*physiology ; Circadian Rhythm/*physiology ; Circadian Rhythm Signaling Peptides and Proteins ; Models, Biological ; Phosphorylation ; Synechococcus/*physiology
    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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  • 3
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    A great-appendage arthropod with a radial mouth from the Lower Devonian Hunsruck Slate, Germany (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-02-07
    Description: Great-appendage arthropods, characterized by a highly modified anterior limb, were previously unknown after the Middle Cambrian. One fossil from the Lower Devonian Hunsruck Slate, Germany, extends the stratigraphic range of these arthropods by approximately 100 million years. Schinderhannes bartelsi shows an unusual combination of anomalocaridid and euarthropod characters, including a highly specialized swimming appendage. A cladistic analysis indicates that the new taxon is basal to crown-group euarthropods and that the great-appendage arthropods are paraphyletic. This new fossil shows that features of the anomalocaridids, including the multisegmented raptorial appendage and circular plated mouth, persisted long after the initial radiation of the euarthropods.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuhl, Gabriele -- Briggs, Derek E G -- Rust, Jes -- New York, N.Y. -- Science. 2009 Feb 6;323(5915):771-3. doi: 10.1126/science.1166586.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Palaeontology, Steinmann Institute, University of Bonn, Nussallee 8, 53115 Bonn, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19197061" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arthropods/*anatomy & histology/*classification ; Extremities/anatomy & histology ; *Fossils ; Germany ; Mouth/anatomy & histology ; Phylogeny
    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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