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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Plant Science 69 (1990), S. 111-122 
    ISSN: 0168-9452
    Keywords: 2D electrophoresis of proteins ; Helianthus annuus ; differential hybridization ; floral cDNA library
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-5028
    Keywords: Arabidopsis thaliana ; cDNA sequence ; Helianthus annuus ; immunolocalization ; RT-PCR ; zinc finger
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract LIM proteins are important eucaryotic developmental regulators characterized by the presence of one or several double zinc finger motifs, the LIM domains, which are protein-interacting domains. Using the cDNA of the previously described pollen LIM protein PLIM1 from sunflower as a hybridization probe we have isolated the coding sequence for a related protein from cDNA libraries from various sunflower organs. This protein, WLIM1, is 188 amino acids long and, like the pollen protein PLIM1, contains two LIM domains, separated by a 48 residue spacer region. The two sunflower proteins are structurally related to the animal LIM proteins CRP and MLP. A WLIM1 gene transcript was detected by RT-PCR in all vegetative and reproductive plant organs tested. Polyclonal antibodies raised against the bacterially expressed and affinity-purified protein recognize a polypeptide of ca. 50 kDa in these organs. Immunocytochemical studies detect the protein in many cell types in each of these organs where it is localized either to the cytoplasm, the nucleus, or both. The protein is often associated with plastids and smaller cellular structures or organelles. In late anaphase and early telophase of dividing cells from ovaries, stems and roots it accumulates in the phragmoplast, and may therefore also play a role in cytokinesis.
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  • 3
    ISSN: 1617-4623
    Keywords: Helianthus annuus ; DNA sequence ; Multicopy gene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We have isolated and sequenced an anther-specific gene from sunflower which encodes an 800-nucleotide transcript detectable in the peripheral anther cells. It contains an intron of 2615 bp, which separates the first exon (77 bp) coding for a putative signal peptide of 21 amino acids, from the second exon (563 bp) coding for a 100 amino acid polypeptide. The 5′ and 3′ untranslated regions comprise respectively 13 and 264 bp. The SF2 gene is present in the sunflower genome in several copies, all or most of which contain a closely related intron.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Molecular genetics and genomics 244 (1994), S. 312-317 
    ISSN: 1617-4623
    Keywords: Helianthus annuus ; cDNA ; Gene Signal peptide ; Conserved splice sites
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We describe here the nucleotide sequence of an anther-specific gene (sf18) from sunflower, encoding a proline- and glycine-rich polypeptide with a hydrophobic amino-terminus (signal peptide). The gene is split by a 211 by intron and is partially related to another anther-specific gene (sf2) from sunflower with which it shares important sequence stretches in the 5′ coding and upstream regions. We propose that the two genes have originated via exon shuffling, during which a copy of a DNA segment including the promoter region as well as a signal peptide coding sequence has been transferred into the upstream region of two different potential coding sequences, generating two novel genes which display the same specificity of expression and which both encode an extracellular protein. While the 5′ region of the intron is highly conserved as part of the transferred region and may play a role in the selection of the 5′ splice site, a common octanucleotide at the 3′ end of the intron of the two genes might be involved in 3′ splice site selection.
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  • 5
    Publication Date: 2010-03-17
    Description: The freshwater cnidarian Hydra was first described in 1702 and has been the object of study for 300 years. Experimental studies of Hydra between 1736 and 1744 culminated in the discovery of asexual reproduction of an animal by budding, the first description of regeneration in an animal, and successful transplantation of tissue between animals. Today, Hydra is an important model for studies of axial patterning, stem cell biology and regeneration. Here we report the genome of Hydra magnipapillata and compare it to the genomes of the anthozoan Nematostella vectensis and other animals. The Hydra genome has been shaped by bursts of transposable element expansion, horizontal gene transfer, trans-splicing, and simplification of gene structure and gene content that parallel simplification of the Hydra life cycle. We also report the sequence of the genome of a novel bacterium stably associated with H. magnipapillata. Comparisons of the Hydra genome to the genomes of other animals shed light on the evolution of epithelia, contractile tissues, developmentally regulated transcription factors, the Spemann-Mangold organizer, pluripotency genes and the neuromuscular junction.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4479502/" 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/PMC4479502/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chapman, Jarrod A -- Kirkness, Ewen F -- Simakov, Oleg -- Hampson, Steven E -- Mitros, Therese -- Weinmaier, Thomas -- Rattei, Thomas -- Balasubramanian, Prakash G -- Borman, Jon -- Busam, Dana -- Disbennett, Kathryn -- Pfannkoch, Cynthia -- Sumin, Nadezhda -- Sutton, Granger G -- Viswanathan, Lakshmi Devi -- Walenz, Brian -- Goodstein, David M -- Hellsten, Uffe -- Kawashima, Takeshi -- Prochnik, Simon E -- Putnam, Nicholas H -- Shu, Shengquiang -- Blumberg, Bruce -- Dana, Catherine E -- Gee, Lydia -- Kibler, Dennis F -- Law, Lee -- Lindgens, Dirk -- Martinez, Daniel E -- Peng, Jisong -- Wigge, Philip A -- Bertulat, Bianca -- Guder, Corina -- Nakamura, Yukio -- Ozbek, Suat -- Watanabe, Hiroshi -- Khalturin, Konstantin -- Hemmrich, Georg -- Franke, Andre -- Augustin, Rene -- Fraune, Sebastian -- Hayakawa, Eisuke -- Hayakawa, Shiho -- Hirose, Mamiko -- Hwang, Jung Shan -- Ikeo, Kazuho -- Nishimiya-Fujisawa, Chiemi -- Ogura, Atshushi -- Takahashi, Toshio -- Steinmetz, Patrick R H -- Zhang, Xiaoming -- Aufschnaiter, Roland -- Eder, Marie-Kristin -- Gorny, Anne-Kathrin -- Salvenmoser, Willi -- Heimberg, Alysha M -- Wheeler, Benjamin M -- Peterson, Kevin J -- Bottger, Angelika -- Tischler, Patrick -- Wolf, Alexander -- Gojobori, Takashi -- Remington, Karin A -- Strausberg, Robert L -- Venter, J Craig -- Technau, Ulrich -- Hobmayer, Bert -- Bosch, Thomas C G -- Holstein, Thomas W -- Fujisawa, Toshitaka -- Bode, Hans R -- David, Charles N -- Rokhsar, Daniel S -- Steele, Robert E -- P 21108/Austrian Science Fund FWF/Austria -- R24 RR015088/RR/NCRR NIH HHS/ -- England -- Nature. 2010 Mar 25;464(7288):592-6. doi: 10.1038/nature08830. Epub 2010 Mar 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉US Department of Energy Joint Genome Institute, Walnut Creek, California 94598, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20228792" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anthozoa/genetics ; Comamonadaceae/genetics ; DNA Transposable Elements/genetics ; Gene Transfer, Horizontal/genetics ; Genome/*genetics ; Genome, Bacterial/genetics ; Hydra/*genetics/microbiology/ultrastructure ; Molecular Sequence Data ; Neuromuscular Junction/ultrastructure
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2013-01-05
    Description: Microtubule-stabilizing agents (MSAs) are efficacious chemotherapeutic drugs widely used for the treatment of cancer. Despite the importance of MSAs for medical applications and basic research, their molecular mechanisms of action on tubulin and microtubules remain elusive. We determined high-resolution crystal structures of alphabeta-tubulin in complex with two unrelated MSAs, zampanolide and epothilone A. Both compounds were bound to the taxane pocket of beta-tubulin and used their respective side chains to induce structuring of the M-loop into a short helix. Because the M-loop establishes lateral tubulin contacts in microtubules, these findings explain how taxane-site MSAs promote microtubule assembly and stability. Further, our results offer fundamental structural insights into the control mechanisms of microtubule dynamics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Prota, Andrea E -- Bargsten, Katja -- Zurwerra, Didier -- Field, Jessica J -- Diaz, Jose Fernando -- Altmann, Karl-Heinz -- Steinmetz, Michel O -- New York, N.Y. -- Science. 2013 Feb 1;339(6119):587-90. doi: 10.1126/science.1230582. Epub 2013 Jan 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biomolecular Research, Paul Scherrer Institut, Villigen PSI, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23287720" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antineoplastic Agents/*chemistry/pharmacology ; Binding Sites ; Bridged Compounds/chemistry/pharmacology ; Cattle ; Chickens ; Crystallography, X-Ray ; Epothilones/*chemistry/pharmacology ; Macrolides/*chemistry/pharmacology ; Microtubules/*drug effects ; Protein Structure, Secondary ; Taxoids/chemistry/pharmacology ; Tubulin/*chemistry ; Tubulin Modulators/*chemistry/pharmacology
    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: 2014-03-29
    Description: We experience the visual world through a series of saccadic eye movements, each one shifting our gaze to bring objects of interest to the fovea for further processing. Although such movements lead to frequent and substantial displacements of the retinal image, these displacements go unnoticed. It is widely assumed that a primary mechanism underlying this apparent stability is an anticipatory shifting of visual receptive fields (RFs) from their presaccadic to their postsaccadic locations before movement onset. Evidence of this predictive 'remapping' of RFs has been particularly apparent within brain structures involved in gaze control. However, critically absent among that evidence are detailed measurements of visual RFs before movement onset. Here we show that during saccade preparation, rather than remap, RFs of neurons in a prefrontal gaze control area massively converge towards the saccadic target. We mapped the visual RFs of prefrontal neurons during stable fixation and immediately before the onset of eye movements, using multi-electrode recordings in monkeys. Following movements from an initial fixation point to a target, RFs remained stationary in retinocentric space. However, in the period immediately before movement onset, RFs shifted by as much as 18 degrees of visual angle, and converged towards the target location. This convergence resulted in a threefold increase in the proportion of RFs responding to stimuli near the target region. In addition, like in human observers, the population of prefrontal neurons grossly mislocalized presaccadic stimuli as being closer to the target. Our results show that RF shifts do not predict the retinal displacements due to saccades, but instead reflect the overriding perception of target space during eye movements.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4064801/" 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/PMC4064801/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zirnsak, Marc -- Steinmetz, Nicholas A -- Noudoost, Behrad -- Xu, Kitty Z -- Moore, Tirin -- EY014924/EY/NEI NIH HHS/ -- R01 EY014924/EY/NEI NIH HHS/ -- T32 MH020016/MH/NIMH NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Mar 27;507(7493):504-7. doi: 10.1038/nature13149.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Department of Neurobiology, Stanford University School of Medicine, Stanford, California 94305, USA [2] Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Neurobiology, Stanford University School of Medicine, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24670771" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Electrodes ; Fixation, Ocular/physiology ; Humans ; Macaca mulatta ; Male ; Models, Neurological ; Neurons/physiology ; Prefrontal Cortex/cytology/*physiology ; Retina/physiology ; Saccades/*physiology ; Visual Acuity/physiology ; Visual Fields/physiology ; Visual Perception/*physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2012-07-06
    Description: Striated muscles are present in bilaterian animals (for example, vertebrates, insects and annelids) and some non-bilaterian eumetazoans (that is, cnidarians and ctenophores). The considerable ultrastructural similarity of striated muscles between these animal groups is thought to reflect a common evolutionary origin. Here we show that a muscle protein core set, including a type II myosin heavy chain (MyHC) motor protein characteristic of striated muscles in vertebrates, was already present in unicellular organisms before the origin of multicellular animals. Furthermore, 'striated muscle' and 'non-muscle' myhc orthologues are expressed differentially in two sponges, compatible with a functional diversification before the origin of true muscles and the subsequent use of striated muscle MyHC in fast-contracting smooth and striated muscle. Cnidarians and ctenophores possess striated muscle myhc orthologues but lack crucial components of bilaterian striated muscles, such as genes that code for titin and the troponin complex, suggesting the convergent evolution of striated muscles. Consistently, jellyfish orthologues of a shared set of bilaterian Z-disc proteins are not associated with striated muscles, but are instead expressed elsewhere or ubiquitously. The independent evolution of eumetazoan striated muscles through the addition of new proteins to a pre-existing, ancestral contractile apparatus may serve as a model for the evolution of complex animal cell types.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3398149/" 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/PMC3398149/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Steinmetz, Patrick R H -- Kraus, Johanna E M -- Larroux, Claire -- Hammel, Jorg U -- Amon-Hassenzahl, Annette -- Houliston, Evelyn -- Worheide, Gert -- Nickel, Michael -- Degnan, Bernard M -- Technau, Ulrich -- P 21108/Austrian Science Fund FWF/Austria -- England -- Nature. 2012 Jul 12;487(7406):231-4. doi: 10.1038/nature11180.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department for Molecular Evolution and Development, Centre for Organismal Systems Biology, University of Vienna, A-1090 Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22763458" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Cnidaria/*anatomy & histology/genetics/metabolism ; Gene Duplication ; Gene Expression Regulation ; Muscle, Striated/metabolism/*physiology ; Myosin Heavy Chains/genetics/metabolism ; Phylogeny
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 1996-08-16
    Description: Apolipoproteins are protein constituents of plasma lipid transport particles. Human apolipoprotein A-IV (apoA-IV) was expressed in the liver of C57BL/6 mice and mice deficient in apoE, both of which are prone to atherosclerosis, to investigate whether apoA-IV protects against this disease. In transgenic C57BL/6 mice on an atherogenic diet, the serum concentration of high density lipoprotein (HDL) cholesterol increased by 35 percent, whereas the concentration of endogenous apoA-I decreased by 29 percent, relative to those in transgenic mice on a normal diet. Expression of human apoA-IV in apoE-deficient mice on a normal diet resulted in an even more severe atherogenic lipoprotein profile, without affecting the concentration of HDL cholesterol, than that in nontransgenic apoE-deficient mice. However, transgenic mice of both backgrounds showed a substantial reduction in the size of atherosclerotic lesions. Thus, apoA-IV appears to protect against atherosclerosis by a mechanism that does not involve an increase in HDL cholesterol concentration.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Duverger, N -- Tremp, G -- Caillaud, J M -- Emmanuel, F -- Castro, G -- Fruchart, J C -- Steinmetz, A -- Denefle, P -- New York, N.Y. -- Science. 1996 Aug 16;273(5277):966-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rhone-Poulenc Rorer, Gencell Division, Atherosclerosis Department, Centre de Recherches de Vitry-Alfortville, 94403 Vitry sur Seine Cedex, France. G. C.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8688083" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apolipoprotein A-I/blood ; Apolipoproteins A/blood/*physiology ; Apolipoproteins E/blood/deficiency ; Arteriosclerosis/*prevention & control ; Cholesterol/blood ; Cholesterol, HDL/blood ; Diet, Atherogenic ; Female ; Humans ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic
    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: 2009-10-03
    Description: The ability of Anopheles gambiae mosquitoes to transmit Plasmodium parasites is highly variable between individuals. However, the genetic basis of this variability has remained unknown. We combined genome-wide mapping and reciprocal allele-specific RNA interference (rasRNAi) to identify the genomic locus that confers resistance to malaria parasites and demonstrated that polymorphisms in a single gene encoding the antiparasitic thioester-containing protein 1 (TEP1) explain a substantial part of the variability in parasite killing. The link between TEP1 alleles and resistance to malaria may offer new tools for controlling malaria transmission. The successful application of rasRNAi in Anopheles suggests that it could also be applied to other organisms where RNAi is feasible to dissect complex phenotypes to the level of individual quantitative trait alleles.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2959166/" 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/PMC2959166/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Blandin, Stephanie A -- Wang-Sattler, Rui -- Lamacchia, Marina -- Gagneur, Julien -- Lycett, Gareth -- Ning, Ye -- Levashina, Elena A -- Steinmetz, Lars M -- R01 GM068717/GM/NIGMS NIH HHS/ -- R01 GM068717-08/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2009 Oct 2;326(5949):147-50. doi: 10.1126/science.1175241.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19797663" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Animals ; Anopheles gambiae/*genetics/immunology/metabolism/*parasitology ; Chromosome Mapping ; *Genes, Insect ; Genome, Insect ; Immunity, Innate ; Insect Proteins/*genetics/*metabolism ; Insect Vectors/genetics/immunology/metabolism/parasitology ; Mice ; Models, Molecular ; Molecular Sequence Data ; Phenotype ; Plasmodium berghei/immunology/*physiology ; *Polymorphism, Genetic ; Quantitative Trait Loci ; RNA Interference
    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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