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  • 1
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    Circadian control of chloroplast transcription by a nuclear-encoded timing signal (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-03-16
    Description: Circadian timekeeping in plants increases photosynthesis and productivity. There are circadian oscillations in the abundance of many chloroplast-encoded transcripts, but it is not known how the circadian clock regulates chloroplast transcription or the photosynthetic apparatus. We show that, in Arabidopsis, nuclear-encoded SIGMA FACTOR5 (SIG5) controls circadian rhythms of transcription of several chloroplast genes, revealing one pathway by which the nuclear-encoded circadian oscillator controls rhythms of chloroplast gene expression. We also show that SIG5 mediates the circadian gating of light input to a chloroplast-encoded gene. We have identified an evolutionarily conserved mechanism that communicates circadian timing information between organelles with distinct genetic systems and have established a new level of integration between eukaryotic circadian clocks and organelles of endosymbiotic origin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Noordally, Zeenat B -- Ishii, Kenyu -- Atkins, Kelly A -- Wetherill, Sarah J -- Kusakina, Jelena -- Walton, Eleanor J -- Kato, Maiko -- Azuma, Miyuki -- Tanaka, Kan -- Hanaoka, Mitsumasa -- Dodd, Antony N -- BB/I005811/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2013 Mar 15;339(6125):1316-9. doi: 10.1126/science.1230397.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉SynthSys, University of Edinburgh, Edinburgh, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23493713" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Arabidopsis/*genetics/*physiology ; Arabidopsis Proteins/genetics/*metabolism ; Cell Nucleus/metabolism ; Chloroplasts/*genetics ; *Circadian Rhythm ; *Gene Expression Regulation, Plant ; Photosystem II Protein Complex/metabolism ; Sigma Factor/genetics/*metabolism ; Transcription, Genetic
    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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    Convergent transcriptional specializations in the brains of humans and song-learning birds (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-12-17
    Description: Song-learning birds and humans share independently evolved similarities in brain pathways for vocal learning that are essential for song and speech and are not found in most other species. Comparisons of brain transcriptomes of song-learning birds and humans relative to vocal nonlearners identified convergent gene expression specializations in specific song and speech brain regions of avian vocal learners and humans. The strongest shared profiles relate bird motor and striatal song-learning nuclei, respectively, with human laryngeal motor cortex and parts of the striatum that control speech production and learning. Most of the associated genes function in motor control and brain connectivity. Thus, convergent behavior and neural connectivity for a complex trait are associated with convergent specialized expression of multiple genes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4385736/" 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/PMC4385736/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pfenning, Andreas R -- Hara, Erina -- Whitney, Osceola -- Rivas, Miriam V -- Wang, Rui -- Roulhac, Petra L -- Howard, Jason T -- Wirthlin, Morgan -- Lovell, Peter V -- Ganapathy, Ganeshkumar -- Mouncastle, Jacquelyn -- Moseley, M Arthur -- Thompson, J Will -- Soderblom, Erik J -- Iriki, Atsushi -- Kato, Masaki -- Gilbert, M Thomas P -- Zhang, Guojie -- Bakken, Trygve -- Bongaarts, Angie -- Bernard, Amy -- Lein, Ed -- Mello, Claudio V -- Hartemink, Alexander J -- Jarvis, Erich D -- DP1 OD000448/OD/NIH HHS/ -- R01 DC007218/DC/NIDCD NIH HHS/ -- R01DC007218/DC/NIDCD NIH HHS/ -- R21 DC007478/DC/NIDCD NIH HHS/ -- R24 GM092842/GM/NIGMS NIH HHS/ -- R24GM092842/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2014 Dec 12;346(6215):1256846. doi: 10.1126/science.1256846.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology, Howard Hughes Medical Institute, and Duke University Medical Center, Durham, NC 27710, USA. apfenning@csail.mit.edu amink@cs.duke.edu jarvis@neuro.duke.edu. ; Department of Neurobiology, Howard Hughes Medical Institute, and Duke University Medical Center, Durham, NC 27710, USA. ; Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, OR 97239, USA. ; Duke Proteomics and Metabolomics Core Facility, Center for Genomic and Computational Biology, Duke University Medical Center, Durham, NC 27710, USA. ; Laboratory for Symbolic Cognitive Development, Brain Science Institute, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. ; Centre for GeoGenetics, Natural History Museum of Denmark, University of Copenhagen, 1350 Copenhagen, Denmark. Trace and Environmental DNA Laboratory, Department of Environment and Agriculture, Curtin University, Perth, Western Australia 6102, Australia. ; China National GeneBank, BGI-Shenzhen, Shenzhen 518083, China. Centre for Social Evolution, Department of Biology, University of Copenhagen, DK-2100 Copenhagen, Denmark. ; Allen Institute for Brain Science, Seattle, WA 98103, USA. ; Department of Computer Science, Duke University, Durham, NC 27708, USA. apfenning@csail.mit.edu amink@cs.duke.edu jarvis@neuro.duke.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25504733" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Birds/genetics/physiology ; Brain/anatomy & histology/*physiology ; Brain Mapping ; Corpus Striatum/anatomy & histology/physiology ; Evolution, Molecular ; Finches/*genetics/*physiology ; *Gene Expression Regulation ; Humans ; *Learning ; Male ; Motor Cortex/anatomy & histology/physiology ; Neural Pathways ; Species Specificity ; *Speech ; Transcription, Genetic ; *Transcriptome ; *Vocalization, Animal
    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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    Poly-dipeptides encoded by the C9orf72 repeats bind nucleoli, impede RNA biogenesis, and kill cells (2014)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2014-08-02
    Description: Many RNA regulatory proteins controlling pre-messenger RNA splicing contain serine:arginine (SR) repeats. Here, we found that these SR domains bound hydrogel droplets composed of fibrous polymers of the low-complexity domain of heterogeneous ribonucleoprotein A2 (hnRNPA2). Hydrogel binding was reversed upon phosphorylation of the SR domain by CDC2-like kinases 1 and 2 (CLK1/2). Mutated variants of the SR domains changing serine to glycine (SR-to-GR variants) also bound to hnRNPA2 hydrogels but were not affected by CLK1/2. When expressed in mammalian cells, these variants bound nucleoli. The translation products of the sense and antisense transcripts of the expansion repeats associated with the C9orf72 gene altered in neurodegenerative disease encode GRn and PRn repeat polypeptides. Both peptides bound to hnRNPA2 hydrogels independent of CLK1/2 activity. When applied to cultured cells, both peptides entered cells, migrated to the nucleus, bound nucleoli, and poisoned RNA biogenesis, which caused cell death.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4459787/" 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/PMC4459787/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kwon, Ilmin -- Xiang, Siheng -- Kato, Masato -- Wu, Leeju -- Theodoropoulos, Pano -- Wang, Tao -- Kim, Jiwoong -- Yun, Jonghyun -- Xie, Yang -- McKnight, Steven L -- U01 GM107623/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2014 Sep 5;345(6201):1139-45. doi: 10.1126/science.1254917. Epub 2014 Jul 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9152, USA. ; Quantitative Biomedical Research Center, Department of Clinical Sciences, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9152, USA. ; Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9152, USA. steven.mcknight@utsouthwestern.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25081482" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amyotrophic Lateral Sclerosis/genetics/*metabolism/pathology ; Astrocytes/*metabolism/pathology ; Cell Death ; Cell Nucleolus/*metabolism ; Cells, Cultured ; Dipeptides/genetics/*metabolism/pharmacology ; Frontotemporal Dementia/genetics/*metabolism/pathology ; Glutamate Plasma Membrane Transport Proteins/genetics ; Heterogeneous-Nuclear Ribonucleoprotein Group A-B/*metabolism ; Humans ; Hydrogel ; Phosphorylation ; Protein Biosynthesis ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases/metabolism ; Protein-Tyrosine Kinases/metabolism ; Proteins/*genetics ; RNA, Antisense/antagonists & inhibitors/biosynthesis ; RNA, Messenger/antagonists & inhibitors/biosynthesis ; RNA, Ribosomal/antagonists & inhibitors/biosynthesis ; Repetitive Sequences, Amino Acid ; Transcription, Genetic
    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)
    Location Call Number Expected Availability
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