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  • Articles  (20)
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  • American Association for the Advancement of Science (AAAS)  (20)
  • Annual Reviews
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  • 1
    Publication Date: 2004-04-07
    Description: We have applied "whole-genome shotgun sequencing" to microbial populations collected en masse on tangential flow and impact filters from seawater samples collected from the Sargasso Sea near Bermuda. A total of 1.045 billion base pairs of nonredundant sequence was generated, annotated, and analyzed to elucidate the gene content, diversity, and relative abundance of the organisms within these environmental samples. These data are estimated to derive from at least 1800 genomic species based on sequence relatedness, including 148 previously unknown bacterial phylotypes. We have identified over 1.2 million previously unknown genes represented in these samples, including more than 782 new rhodopsin-like photoreceptors. Variation in species present and stoichiometry suggests substantial oceanic microbial diversity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Venter, J Craig -- Remington, Karin -- Heidelberg, John F -- Halpern, Aaron L -- Rusch, Doug -- Eisen, Jonathan A -- Wu, Dongying -- Paulsen, Ian -- Nelson, Karen E -- Nelson, William -- Fouts, Derrick E -- Levy, Samuel -- Knap, Anthony H -- Lomas, Michael W -- Nealson, Ken -- White, Owen -- Peterson, Jeremy -- Hoffman, Jeff -- Parsons, Rachel -- Baden-Tillson, Holly -- Pfannkoch, Cynthia -- Rogers, Yu-Hui -- Smith, Hamilton O -- New York, N.Y. -- Science. 2004 Apr 2;304(5667):66-74. Epub 2004 Mar 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Biological Energy Alternatives, 1901 Research Boulevard, Rockville, MD 20850, USA. jcventer@tcag.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15001713" target="_blank"〉PubMed〈/a〉
    Keywords: Archaea/*genetics ; Atlantic Ocean ; Bacteria/*genetics ; Bacteriophages/genetics ; Biodiversity ; Computational Biology ; Cyanobacteria/genetics/growth & development/metabolism ; *Ecosystem ; Eukaryotic Cells ; Genes, Archaeal ; Genes, Bacterial ; Genes, rRNA ; Genome, Archaeal ; *Genome, Bacterial ; *Genomics ; Molecular Sequence Data ; Photosynthesis ; Phylogeny ; Plasmids ; Rhodopsin/genetics ; Rhodopsins, Microbial ; Seawater/*microbiology ; *Sequence Analysis, DNA ; Water Microbiology
    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
    Publication Date: 2004-11-30
    Description: The widespread extinctions of large mammals at the end of the Pleistocene epoch have often been attributed to the depredations of humans; here we present genetic evidence that questions this assumption. We used ancient DNA and Bayesian techniques to reconstruct a detailed genetic history of bison throughout the late Pleistocene and Holocene epochs. Our analyses depict a large diverse population living throughout Beringia until around 37,000 years before the present, when the population's genetic diversity began to decline dramatically. The timing of this decline correlates with environmental changes associated with the onset of the last glacial cycle, whereas archaeological evidence does not support the presence of large populations of humans in Eastern Beringia until more than 15,000 years later.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shapiro, Beth -- Drummond, Alexei J -- Rambaut, Andrew -- Wilson, Michael C -- Matheus, Paul E -- Sher, Andrei V -- Pybus, Oliver G -- Gilbert, M Thomas P -- Barnes, Ian -- Binladen, Jonas -- Willerslev, Eske -- Hansen, Anders J -- Baryshnikov, Gennady F -- Burns, James A -- Davydov, Sergei -- Driver, Jonathan C -- Froese, Duane G -- Harington, C Richard -- Keddie, Grant -- Kosintsev, Pavel -- Kunz, Michael L -- Martin, Larry D -- Stephenson, Robert O -- Storer, John -- Tedford, Richard -- Zimov, Sergei -- Cooper, Alan -- New York, N.Y. -- Science. 2004 Nov 26;306(5701):1561-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Henry Wellcome Ancient Biomolecules Centre, Oxford University, South Parks Road, Oxford OX13PS, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15567864" target="_blank"〉PubMed〈/a〉
    Keywords: Alaska ; Animals ; Bayes Theorem ; *Bison/classification/genetics ; Canada ; China ; *Climate ; DNA, Mitochondrial/genetics ; Environment ; *Fossils ; Genetic Variation ; Genetics, Population ; Human Activities ; Humans ; North America ; 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
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  • 3
    Publication Date: 2004-07-27
    Description: Adherence by Helicobacter pylori increases the risk of gastric disease. Here, we report that more than 95% of strains that bind fucosylated blood group antigen bind A, B, and O antigens (generalists), whereas 60% of adherent South American Amerindian strains bind blood group O antigens best (specialists). This specialization coincides with the unique predominance of blood group O in these Amerindians. Strains differed about 1500-fold in binding affinities, and diversifying selection was evident in babA sequences. We propose that cycles of selection for increased and decreased bacterial adherence contribute to babA diversity and that these cycles have led to gradual replacement of generalist binding by specialist binding in blood group O-dominant human populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aspholm-Hurtig, Marina -- Dailide, Giedrius -- Lahmann, Martina -- Kalia, Awdhesh -- Ilver, Dag -- Roche, Niamh -- Vikstrom, Susanne -- Sjostrom, Rolf -- Linden, Sara -- Backstrom, Anna -- Lundberg, Carina -- Arnqvist, Anna -- Mahdavi, Jafar -- Nilsson, Ulf J -- Velapatino, Billie -- Gilman, Robert H -- Gerhard, Markus -- Alarcon, Teresa -- Lopez-Brea, Manuel -- Nakazawa, Teruko -- Fox, James G -- Correa, Pelayo -- Dominguez-Bello, Maria Gloria -- Perez-Perez, Guillermo I -- Blaser, Martin J -- Normark, Staffan -- Carlstedt, Ingemar -- Oscarson, Stefan -- Teneberg, Susann -- Berg, Douglas E -- Boren, Thomas -- P30 DK52574/DK/NIDDK NIH HHS/ -- R01 AI38166/AI/NIAID NIH HHS/ -- R01 DK53727/DK/NIDDK NIH HHS/ -- R01 DK63041/DK/NIDDK NIH HHS/ -- R03 AI49161/AI/NIAID NIH HHS/ -- R0IGM62370/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2004 Jul 23;305(5683):519-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Odontology, section of Oral Microbiology, Umea University, SE-901 87 Umea, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15273394" target="_blank"〉PubMed〈/a〉
    Keywords: ABO Blood-Group System/*metabolism ; Adaptation, Biological ; Adhesins, Bacterial/chemistry/*genetics/immunology/*metabolism ; Alleles ; *Bacterial Adhesion ; Base Sequence ; Binding Sites ; Evolution, Molecular ; Fucose/metabolism ; Gastric Mucosa/microbiology ; Helicobacter Infections/microbiology ; Helicobacter pylori/genetics/immunology/*physiology ; Humans ; Indians, South American ; Lewis Blood-Group System/metabolism ; Molecular Sequence Data ; Mutation ; Peru ; Phenotype ; Phylogeny ; Protein Binding ; Selection, Genetic ; Transformation, Bacterial
    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: 2004-12-18
    Description: The shift to self-pollination is one of the most prevalent evolutionary transitions in flowering plants. In the selfing plant Arabidopsis thaliana, pseudogenes at the SCR and SRK self-incompatibility loci are believed to underlie the evolution of self-fertilization. Positive directional selection has driven the evolutionary fixation of pseudogene alleles of SCR, leading to substantially reduced nucleotide variation. Coalescent simulations indicate that this adaptive event may have occurred very recently and is possibly associated with the post-Pleistocene expansion of A. thaliana from glacial refugia. This suggests that ancillary morphological innovations associated with self-pollination can evolve rapidly after the inactivation of the self-incompatibility response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shimizu, Kentaro K -- Cork, Jennifer M -- Caicedo, Ana L -- Mays, Charlotte A -- Moore, Richard C -- Olsen, Kenneth M -- Ruzsa, Stephanie -- Coop, Graham -- Bustamante, Carlos D -- Awadalla, Philip -- Purugganan, Michael D -- New York, N.Y. -- Science. 2004 Dec 17;306(5704):2081-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, North Carolina State University, Box 7614, Raleigh, NC 27695, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15604405" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Arabidopsis/*genetics/*physiology ; Biological Evolution ; Chromosome Mapping ; Climate ; DNA, Intergenic ; *Genes, Plant ; Genetic Variation ; Genome, Plant ; Geography ; Haplotypes ; Likelihood Functions ; Molecular Sequence Data ; Open Reading Frames ; Phylogeny ; Plant Proteins ; Pollen ; Polymorphism, Genetic ; Polymorphism, Single Nucleotide ; Protein Kinases/*genetics/physiology ; *Pseudogenes ; Recombination, Genetic ; *Selection, Genetic ; 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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  • 5
    Publication Date: 2004-01-13
    Description: A phylogenetic analysis of 1125 global human mitochondrial DNA (mtDNA) sequences permitted positioning of all nucleotide substitutions according to their order of occurrence. The relative frequency and amino acid conservation of internal branch replacement mutations was found to increase from tropical Africa to temperate Europe and arctic northeastern Siberia. Particularly highly conserved amino acid substitutions were found at the roots of multiple mtDNA lineages from higher latitudes. These same lineages correlate with increased propensity for energy deficiency diseases as well as longevity. Thus, specific mtDNA replacement mutations permitted our ancestors to adapt to more northern climates, and these same variants are influencing our health today.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ruiz-Pesini, Eduardo -- Mishmar, Dan -- Brandon, Martin -- Procaccio, Vincent -- Wallace, Douglas C -- AG13154/AG/NIA NIH HHS/ -- HL64017/HL/NHLBI NIH HHS/ -- NS21328/NS/NINDS NIH HHS/ -- NS37167/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2004 Jan 9;303(5655):223-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular and Mitochondrial Medicine and Genetics, University of California, Irvine, CA 92697-3940, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14716012" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptation, Physiological ; Africa ; Arctic Regions ; Asia ; *Climate ; Cold Climate ; Conserved Sequence ; Continental Population Groups/genetics ; DNA, Mitochondrial/*genetics ; Emigration and Immigration ; Energy Metabolism ; Europe ; Genetic Predisposition to Disease ; *Genetic Variation ; Haplotypes ; Humans ; Longevity ; Metabolic Diseases/genetics ; Mitochondria/metabolism ; Mutation ; Neurodegenerative Diseases/genetics ; Phenotype ; Phylogeny ; *Selection, Genetic ; Siberia
    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
    Publication Date: 2004-11-20
    Description: We describe a partial skeleton with facial cranium of Pierolapithecus catalaunicus gen. et sp. nov., a new Middle Miocene (12.5 to 13 million years ago) ape from Barranc de Can Vila 1 (Barcelona, Spain). It is the first known individual of this age that combines well-preserved cranial, dental, and postcranial material. The thorax, lumbar region, and wrist provide evidence of modern ape-like orthograde body design, and the facial morphology includes the basic derived great ape features. The new skeleton reveals that early great apes retained primitive monkeylike characters associated with a derived body structure that permits upright postures of the trunk. Pierolapithecus, hence, does not fit the theoretical model that predicts that all characters shared by extant great apes were present in their last common ancestor, but instead points to a large amount of homoplasy in ape evolution. The overall pattern suggests that Pierolapithecus is probably close to the last common ancestor of great apes and humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moya-Sola, Salvador -- Kohler, Meike -- Alba, David M -- Casanovas-Vilar, Isaac -- Galindo, Jordi -- New York, N.Y. -- Science. 2004 Nov 19;306(5700):1339-44.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Paleontologia M. Crusafont, Escola Industrial 23, Sabadell, Barcelona 08201, Spain. moyass@diba.es〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15550663" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Face/anatomy & histology ; Facial Bones/anatomy & histology ; *Fossils ; *Hominidae/anatomy & histology/classification ; Locomotion ; Phylogeny ; Posture ; Ribs/anatomy & histology ; Skeleton ; Skull/anatomy & histology ; Spain ; Spine/anatomy & histology ; Thorax/anatomy & histology ; Wrist/anatomy & histology
    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
    Publication Date: 2004-12-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keeling, Patrick J -- Archibald, John M -- Fast, Naomi M -- Palmer, Jeffrey D -- New York, N.Y. -- Science. 2004 Dec 24;306(5705):2191; author reply 2191.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Botany, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada. pkeeling@interchange.ubc.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15618503" target="_blank"〉PubMed〈/a〉
    Keywords: Biodiversity ; *Biological Evolution ; Chlorophyta/genetics/physiology ; *Eukaryota/genetics/physiology ; Gene Transfer, Horizontal ; Phylogeny ; *Phytoplankton/genetics ; Plastids/genetics/physiology ; Rhodophyta/genetics/physiology ; Symbiosis
    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
    Publication Date: 2004-06-05
    Description: Ten phosphatized specimens of a small (〈180 micrometers) animal displaying clear bilaterian features have been recovered from the Doushantuo Formation, China, dating from 40 to 55 million years before the Cambrian. Seen in sections, this animal (Vernanimalcula guizhouena gen. et sp. nov.) had paired coeloms extending the length of the gut; paired external pits that could be sense organs; bilateral, anterior-posterior organization; a ventrally directed anterior mouth with thick walled pharynx; and a triploblastic structure. The structural complexity is that of an adult rather than a larval form. These fossils provide the first evidence confirming the phylogenetic inference that Bilateria arose well before the Cambrian.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Jun-Yuan -- Bottjer, David J -- Oliveri, Paola -- Dornbos, Stephen Q -- Gao, Feng -- Ruffins, Seth -- Chi, Huimei -- Li, Chia-Wei -- Davidson, Eric H -- New York, N.Y. -- Science. 2004 Jul 9;305(5681):218-22. Epub 2004 Jun 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Nanjing Institute of Geology and Paleontology, Nanjing 210008, China. chenjunyuan@163.net〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15178752" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; China ; Digestive System/anatomy & histology ; Endoderm ; *Fossils ; *Invertebrates/anatomy & histology/classification ; Mesoderm ; Phylogeny ; Time
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    Electronic ISSN: 1095-9203
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  • 9
    Publication Date: 2004-05-08
    Description: Over 99% of modern animals are members of the evolutionary lineage Bilateria. The evolutionary success of Bilateria is credited partly to the origin of bilateral symmetry. Although animals of the phylum Cnidaria are not within the Bilateria, some representatives, such as the sea anemone Nematostella vectensis, exhibit bilateral symmetry. We show that Nematostella uses homologous genes to achieve bilateral symmetry: Multiple Hox genes are expressed in a staggered fashion along its primary body axis, and the transforming growth factor-beta gene decapentaplegic (dpp) is expressed in an asymmetric fashion about its secondary body axis. These data suggest that bilateral symmetry arose before the evolutionary split of Cnidaria and Bilateria.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Finnerty, John R -- Pang, Kevin -- Burton, Pat -- Paulson, Dave -- Martindale, Mark Q -- New York, N.Y. -- Science. 2004 May 28;304(5675):1335-7. Epub 2004 May 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Boston University, 5 Cummington Street, Boston, MA 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15131263" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Body Patterning ; Endoderm/physiology ; Gene Duplication ; Gene Expression Profiling ; *Gene Expression Regulation, Developmental ; Genes ; *Genes, Homeobox ; In Situ Hybridization ; Larva/genetics/growth & development ; Molecular Sequence Data ; Phylogeny ; Sea Anemones/*anatomy & histology/embryology/*genetics/growth & development
    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
    Publication Date: 2004-05-25
    Description: We used molecular markers to study genetic relationships in a diverse collection of 85 domestic dog breeds. Differences among breeds accounted for approximately 30% of genetic variation. Microsatellite genotypes were used to correctly assign 99% of individual dogs to breeds. Phylogenetic analysis separated several breeds with ancient origins from the remaining breeds with modern European origins. We identified four genetic clusters, which predominantly contained breeds with similar geographic origin, morphology, or role in human activities. These results provide a genetic classification of dog breeds and will aid studies of the genetics of phenotypic breed differences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parker, Heidi G -- Kim, Lisa V -- Sutter, Nathan B -- Carlson, Scott -- Lorentzen, Travis D -- Malek, Tiffany B -- Johnson, Gary S -- DeFrance, Hawkins B -- Ostrander, Elaine A -- Kruglyak, Leonid -- K05 CA90754/CA/NCI NIH HHS/ -- T32 HG00035/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2004 May 21;304(5674):1160-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Human Biology, Fred Hutchinson Cancer Research Center, Post Office Box 19024, 1100 Fairview Avenue North, D4-100, Seattle, WA 98109-1024, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15155949" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; Bayes Theorem ; Biological Evolution ; *Breeding ; Computational Biology ; Dog Diseases/genetics ; Dogs/classification/*genetics ; *Genetic Variation ; *Genome ; Genotype ; *Microsatellite Repeats ; Phenotype ; Phylogeny ; Polymorphism, Single Nucleotide ; Sequence Analysis, DNA ; Software
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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