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  • 1
    Electronic Resource
    Electronic Resource
    Physical map of chloroplast DNA of aerial yam, Dioscorea bulbifera L. (1989)
    Springer
    Theoretical and applied genetics 78 (1989), S. 1-10 
    Details
    ISSN: 1432-2242
    Keywords: Aerial yam ; Dioscorea bulbifera L. ; Chloroplast DNA ; Physical map ; Clone bank
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A physical map of chloroplast DNA (ctDNA) of aerial yam, Dioscorea bulbifera L. was constructed using three restriction endonucleases, PstI, SalI, and SmaI. In addition, a clone bank of the BamHI-digested fragments were generated, and the locations of most BamHI fragments on the map were also determined. The ctDNA of D. bulbifera was found to be a circular molecule with a total size of ca. 152 kb involving two inverted repeats of ca. 25.5 kb, and small and large single copy regions of ca. 18.5 and 83.4 kb, respectively. The genes for the large subunit of the ribulose 1,5-bisphosphate carboxylase (rbcL) and the ATP-synthase subunits β and ɛ (atpB/atpE) were mapped.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00299745
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  • 2
    Electronic Resource
    Electronic Resource
    Intraspecific variation of chloroplast DNA in Dioscorea bulbifera L. (1991)
    Springer
    Theoretical and applied genetics 81 (1991), S. 461-470 
    Details
    ISSN: 1432-2242
    Keywords: Dioscorea bulbifera L. ; Chloroplast DNA ; RFLP analysis ; Southern hybridization ; Phylogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Restriction fragment length polymorphism (RFLP) analysis of chloroplast (ct) DNAs from 15 accessions of Dioscorea bulbifera collected from Africa and Asia was carried out using the Southern hybridization technique. Eight cloned ctDNA fragments of D. bulbifera and D. opposita, which cover 80% of the total chloroplast genome, were used as the probes to detect variation in ctDNA digested with nine restriction endonucleases. Ten variable sites, located in the large and small single-copy regions, were disclosed among the 15 accessions, of which six showed base substitution and four carried length mutation. Positions of the latter mutations were determined on the physical map of ctDNA. Based on these results, chloroplast genomes of the 15 accessions could be classified into nine types. Their phylogenetic relationships are assumed to be as follows: (1) African and Asian chloroplast genomes diverged from each other at the earliest point in time; (2) E-type chloroplast genome, occurring in the south-east edge of the Asian continent, appears to be the most ancient among all the Asian chloroplast genomes; and (3) four chloroplast genomes, found in Asian insular regions, are probably derived independently from the E-type genome. The discrepancy between the taxonomic relationship and the proposed chloroplast genome phylogeny of the present materials is noted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00219435
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  • 3
    Electronic Resource
    Electronic Resource
    Origin and phylogeny of Guinea yams as revealed by RFLP analysis of chloroplast DNA and nuclear ribosomal DNA (1992)
    Springer
    Theoretical and applied genetics 83 (1992), S. 743-751 
    Details
    ISSN: 1432-2242
    Keywords: Guinea yams ; Dioscorea ; Chloroplast DNA ; Nuclear ribosomal DNA ; Phylogeny
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The origin and phylogeny of the Guinea yams, consisting of the white yam (Dioscorea rotundata Poir.) and the yellow yam (D. cayenensis Lamk.), has been investigated. Fourteen cultivars of Guinea yams were sampled with 12 accessions from seven wild yam species. A total of 26 accessions were surveyed for restriction fragment length polymorphisms (RFLP) in chloroplast DNA (cpDNA) and nuclear ribosomal DNA (rDNA) using seven restriction endonucleases and various heterologous probes. Chloroplast DNA probes covering 80% of the total chloroplast genome revealed nine restriction site changes and one length mutation among the cpDNAs of Guinea yams and their wild relatives. The estimated numbers of nucleotide substitutions per site (d) among these cpDNAs were very low (0.0005–0.0027), indicating a rather recent divergence of this group. On the basis of these ten mutations, five chloroplast genome types (A-E) were recognized. It was revealed that two cultivated species (D. rotundata and D. cayenensis) display the same chloroplast genome type, type A, as the three wild species D. praehensilis, D. liebrechtsiana and D. abyssinica. Chloroplast genome types B, C, D and E were found in D. minutiflora, D. burkilliana, D. smilacifolia and D. togoensis, respectively. Maximum parsimony analysis produced a hypothetical phylogeny of three primary lineages among cpDNAs of Guinea yams and their relatives: the genome type A lineage, the genome type B lineage and one lineage including genome types C, D and E. Using rDNA clones of rice and taro as probes, we detected ribosomal DNA variation, presumably at the intergenic spacer region, in Guinea yams and their wild relatives. The survey of rDNA together with that of cpDNA indicates that D. rotundata (white yam) was domesticated from either D. abyssinica, D. liebrechtsiana or D. praehensilis or their hybrid, and that D. cayenensis (yellow yam) is derived from hybridization between a male plant of either D. burkilliana, D. minutiflora or D. smilacifolia and a female plant of either D. rotundata, D. abyssinica, D. liebrechtsiana or D. praehensilis. We propose that the previous nomenclature of white yam should be retained, D. rotundata Poir. nomen nudum, and that yellow yam should be treated as a variety of D. rotundata, denoted as D. rotundata var. x ‘cayenensis’.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226693
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  • 4
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    Role of NADH shuttle system in glucose-induced activation of mitochondrial metabolism and insulin secretion (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-02-12
    Description: Glucose metabolism in glycolysis and in mitochondria is pivotal to glucose-induced insulin secretion from pancreatic beta cells. One or more factors derived from glycolysis other than pyruvate appear to be required for the generation of mitochondrial signals that lead to insulin secretion. The electrons of the glycolysis-derived reduced form of nicotinamide adenine dinucleotide (NADH) are transferred to mitochondria through the NADH shuttle system. By abolishing the NADH shuttle function, glucose-induced increases in NADH autofluorescence, mitochondrial membrane potential, and adenosine triphosphate content were reduced and glucose-induced insulin secretion was abrogated. The NADH shuttle evidently couples glycolysis with activation of mitochondrial energy metabolism to trigger insulin secretion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Eto, K -- Tsubamoto, Y -- Terauchi, Y -- Sugiyama, T -- Kishimoto, T -- Takahashi, N -- Yamauchi, N -- Kubota, N -- Murayama, S -- Aizawa, T -- Akanuma, Y -- Aizawa, S -- Kasai, H -- Yazaki, Y -- Kadowaki, T -- New York, N.Y. -- Science. 1999 Feb 12;283(5404):981-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan. Tokyo〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9974390" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Aminooxyacetic Acid/pharmacology ; Animals ; Aspartate Aminotransferases/antagonists & inhibitors ; Calcium/metabolism ; Citric Acid Cycle ; Enzyme Inhibitors/pharmacology ; Female ; Gene Targeting ; Glucose/metabolism/*pharmacology ; Glycerolphosphate Dehydrogenase/genetics/metabolism ; Glycolysis ; Insulin/*secretion ; Islets of Langerhans/metabolism/*secretion ; Male ; Membrane Potentials ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mitochondria/*metabolism ; Models, Biological ; Molecular Sequence Data ; NAD/*metabolism ; Pyruvic Acid/metabolism
    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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  • 5
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    Xid-like immunodeficiency in mice with disruption of the p85alpha subunit of phosphoinositide 3-kinase (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-01-15
    Description: Mice with a targeted gene disruption of p85alpha, a regulatory subunit of phosphoinositide 3-kinase, had impaired B cell development at the pro-B cell stage, reduced numbers of mature B cells and peritoneal CD5+ Ly-1 B cells, reduced B cell proliferative responses, and no T cell-independent antibody production. These phenotypes are nearly identical to those of Btk-/- or xid (X-linked immunodeficiency) mice. These results provide evidence that p85alpha is functionally linked to the Btk pathway in antigen receptor-mediated signal transduction and is pivotal in B cell development and functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Suzuki, H -- Terauchi, Y -- Fujiwara, M -- Aizawa, S -- Yazaki, Y -- Kadowaki, T -- Koyasu, S -- New York, N.Y. -- Science. 1999 Jan 15;283(5400):390-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9888854" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Formation ; Antigens, CD5/analysis ; Antigens, Ly/analysis ; Antigens, T-Independent/immunology ; B-Lymphocyte Subsets/cytology/immunology ; B-Lymphocytes/cytology/*immunology ; Bone Marrow/immunology ; Cell Survival ; Gene Targeting ; Genetic Linkage ; Immunologic Deficiency Syndromes/*enzymology/genetics/immunology ; Lymphocyte Count ; Lymphoid Tissue/immunology ; Mice ; Mutation ; Phenotype ; Phosphatidylinositol 3-Kinases/genetics/*metabolism ; Protein-Tyrosine Kinases/genetics/metabolism ; Signal Transduction ; T-Lymphocytes/immunology ; X Chromosome
    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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  • 6
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    Distinct FGFs promote differentiation of excitatory and inhibitory synapses (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-05-28
    Description: The differential formation of excitatory (glutamate-mediated) and inhibitory (GABA-mediated) synapses is a critical step for the proper functioning of the brain. An imbalance in these synapses may lead to various neurological disorders such as autism, schizophrenia, Tourette's syndrome and epilepsy. Synapses are formed through communication between the appropriate synaptic partners. However, the molecular mechanisms that mediate the formation of specific synaptic types are not known. Here we show that two members of the fibroblast growth factor (FGF) family, FGF22 and FGF7, promote the organization of excitatory and inhibitory presynaptic terminals, respectively, as target-derived presynaptic organizers. FGF22 and FGF7 are expressed by CA3 pyramidal neurons in the hippocampus. The differentiation of excitatory or inhibitory nerve terminals on dendrites of CA3 pyramidal neurons is specifically impaired in mutants lacking FGF22 or FGF7. These presynaptic defects are rescued by postsynaptic expression of the appropriate FGF. FGF22-deficient mice are resistant to epileptic seizures, and FGF7-deficient mice are prone to them, as expected from the alterations in excitatory/inhibitory balance. Differential effects of FGF22 and FGF7 involve both their distinct synaptic localizations and their use of different signalling pathways. These results demonstrate that specific FGFs act as target-derived presynaptic organizers and help to organize specific presynaptic terminals in the mammalian brain.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4137042/" 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/PMC4137042/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Terauchi, Akiko -- Johnson-Venkatesh, Erin M -- Toth, Anna B -- Javed, Danish -- Sutton, Michael A -- Umemori, Hisashi -- R01 NS070005/NS/NINDS NIH HHS/ -- England -- Nature. 2010 Jun 10;465(7299):783-7. doi: 10.1038/nature09041. Epub 2010 May 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular and Behavioral Neuroscience Institute, University of Michigan Medical School, Ann Arbor, Michigan 48109-2200, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20505669" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Differentiation ; Cells, Cultured ; Dendrites/metabolism ; Disease Susceptibility ; Epilepsy/chemically induced/genetics/physiopathology ; Excitatory Postsynaptic Potentials/*physiology ; Fibroblast Growth Factor 7/deficiency/genetics/*metabolism ; Fibroblast Growth Factors/deficiency/genetics/*metabolism ; Gene Expression Profiling ; Glutamic Acid/metabolism ; Hippocampus/cytology/embryology/metabolism/pathology ; In Situ Hybridization ; Inhibitory Postsynaptic Potentials/*physiology ; Kindling, Neurologic ; Mice ; Mice, Knockout ; Miniature Postsynaptic Potentials/physiology ; Presynaptic Terminals/classification/metabolism/pathology/ultrastructure ; Pyramidal Cells/cytology/metabolism/pathology ; Receptors, Fibroblast Growth Factor/metabolism ; Seizures/chemically induced/genetics/radiotherapy ; Synapses/*classification/*metabolism/pathology/ultrastructure ; Synaptic Transmission ; Synaptic Vesicles/metabolism/pathology/ultrastructure ; gamma-Aminobutyric Acid/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 7
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    The Chlamydomonas genome reveals the evolution of key animal and plant functions (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-10-13
    Description: Chlamydomonas reinhardtii is a unicellular green alga whose lineage diverged from land plants over 1 billion years ago. It is a model system for studying chloroplast-based photosynthesis, as well as the structure, assembly, and function of eukaryotic flagella (cilia), which were inherited from the common ancestor of plants and animals, but lost in land plants. We sequenced the approximately 120-megabase nuclear genome of Chlamydomonas and performed comparative phylogenomic analyses, identifying genes encoding uncharacterized proteins that are likely associated with the function and biogenesis of chloroplasts or eukaryotic flagella. Analyses of the Chlamydomonas genome advance our understanding of the ancestral eukaryotic cell, reveal previously unknown genes associated with photosynthetic and flagellar functions, and establish links between ciliopathy and the composition and function of flagella.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2875087/" 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/PMC2875087/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Merchant, Sabeeha S -- Prochnik, Simon E -- Vallon, Olivier -- Harris, Elizabeth H -- Karpowicz, Steven J -- Witman, George B -- Terry, Astrid -- Salamov, Asaf -- Fritz-Laylin, Lillian K -- Marechal-Drouard, Laurence -- Marshall, Wallace F -- Qu, Liang-Hu -- Nelson, David R -- Sanderfoot, Anton A -- Spalding, Martin H -- Kapitonov, Vladimir V -- Ren, Qinghu -- Ferris, Patrick -- Lindquist, Erika -- Shapiro, Harris -- Lucas, Susan M -- Grimwood, Jane -- Schmutz, Jeremy -- Cardol, Pierre -- Cerutti, Heriberto -- Chanfreau, Guillaume -- Chen, Chun-Long -- Cognat, Valerie -- Croft, Martin T -- Dent, Rachel -- Dutcher, Susan -- Fernandez, Emilio -- Fukuzawa, Hideya -- Gonzalez-Ballester, David -- Gonzalez-Halphen, Diego -- Hallmann, Armin -- Hanikenne, Marc -- Hippler, Michael -- Inwood, William -- Jabbari, Kamel -- Kalanon, Ming -- Kuras, Richard -- Lefebvre, Paul A -- Lemaire, Stephane D -- Lobanov, Alexey V -- Lohr, Martin -- Manuell, Andrea -- Meier, Iris -- Mets, Laurens -- Mittag, Maria -- Mittelmeier, Telsa -- Moroney, James V -- Moseley, Jeffrey -- Napoli, Carolyn -- Nedelcu, Aurora M -- Niyogi, Krishna -- Novoselov, Sergey V -- Paulsen, Ian T -- Pazour, Greg -- Purton, Saul -- Ral, Jean-Philippe -- Riano-Pachon, Diego Mauricio -- Riekhof, Wayne -- Rymarquis, Linda -- Schroda, Michael -- Stern, David -- Umen, James -- Willows, Robert -- Wilson, Nedra -- Zimmer, Sara Lana -- Allmer, Jens -- Balk, Janneke -- Bisova, Katerina -- Chen, Chong-Jian -- Elias, Marek -- Gendler, Karla -- Hauser, Charles -- Lamb, Mary Rose -- Ledford, Heidi -- Long, Joanne C -- Minagawa, Jun -- Page, M Dudley -- Pan, Junmin -- Pootakham, Wirulda -- Roje, Sanja -- Rose, Annkatrin -- Stahlberg, Eric -- Terauchi, Aimee M -- Yang, Pinfen -- Ball, Steven -- Bowler, Chris -- Dieckmann, Carol L -- Gladyshev, Vadim N -- Green, Pamela -- Jorgensen, Richard -- Mayfield, Stephen -- Mueller-Roeber, Bernd -- Rajamani, Sathish -- Sayre, Richard T -- Brokstein, Peter -- Dubchak, Inna -- Goodstein, David -- Hornick, Leila -- Huang, Y Wayne -- Jhaveri, Jinal -- Luo, Yigong -- Martinez, Diego -- Ngau, Wing Chi Abby -- Otillar, Bobby -- Poliakov, Alexander -- Porter, Aaron -- Szajkowski, Lukasz -- Werner, Gregory -- Zhou, Kemin -- Grigoriev, Igor V -- Rokhsar, Daniel S -- Grossman, Arthur R -- GM07185/GM/NIGMS NIH HHS/ -- GM42143/GM/NIGMS NIH HHS/ -- R01 GM032843/GM/NIGMS NIH HHS/ -- R01 GM042143/GM/NIGMS NIH HHS/ -- R01 GM042143-09/GM/NIGMS NIH HHS/ -- R01 GM060992/GM/NIGMS NIH HHS/ -- R01 GM062915-06/GM/NIGMS NIH HHS/ -- R37 GM030626/GM/NIGMS NIH HHS/ -- R37 GM042143/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 Oct 12;318(5848):245-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, University of California at Los Angeles, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17932292" target="_blank"〉PubMed〈/a〉
    Keywords: Algal Proteins/*genetics/*physiology ; Animals ; *Biological Evolution ; Chlamydomonas reinhardtii/*genetics/physiology ; Chloroplasts/metabolism ; Computational Biology ; DNA, Algal/genetics ; Flagella/metabolism ; Genes ; *Genome ; Genomics ; Membrane Transport Proteins/genetics/physiology ; Molecular Sequence Data ; Multigene Family ; Photosynthesis/genetics ; Phylogeny ; Plants/genetics ; Proteome ; Sequence Analysis, DNA
    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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