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  • Mutation  (4)
  • Genes, Protozoan  (3)
  • American Association for the Advancement of Science (AAAS)  (7)
  • Springer Nature
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  • 1
    Publication Date: 2001-04-28
    Description: Slit is secreted by cells at the midline of the central nervous system, where it binds to Roundabout (Robo) receptors and functions as a potent repellent. We found that migrating mesodermal cells in vivo respond to Slit as both an attractant and a repellent and that Robo receptors are required for both functions. Mesoderm cells expressing Robo receptors initially migrate away from Slit at the midline. A few hours after migration, these same cells change their behavior and require Robo to extend toward Slit-expressing muscle attachment sites. Thus, Slit functions as a chemoattractant to provide specificity for muscle patterning.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kramer, S G -- Kidd, T -- Simpson, J H -- Goodman, C S -- NS18366/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2001 Apr 27;292(5517):737-40.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Molecular and Cell Biology, 519 Life Sciences Addition, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11326102" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Body Patterning ; Cell Fusion ; Cell Movement ; Drosophila/embryology/genetics ; *Drosophila Proteins ; Embryo, Nonmammalian/cytology/metabolism ; Epidermis/embryology/metabolism ; Mesoderm/*cytology/metabolism ; Microscopy, Confocal ; Muscles/*cytology/embryology/metabolism ; Mutation ; Nerve Tissue Proteins/genetics/*metabolism ; Receptors, Immunologic/genetics/*metabolism ; Signal Transduction ; Stem Cells/metabolism/physiology
    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
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2002-04-16
    Description: Multiple environmental and endogenous inputs regulate when plants flower. The molecular genetic dissection of flowering time control in Arabidopsis has identified an integrated network of pathways that quantitatively control the timing of this developmental switch. This framework provides the basis to understand the evolution of different reproductive strategies and how floral pathways interact through seasonal progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simpson, Gordon G -- Dean, Caroline -- New York, N.Y. -- Science. 2002 Apr 12;296(5566):285-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Developmental Biology, John Innes Centre, Norwich, NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11951029" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/genetics/growth & development/*physiology ; Arabidopsis Proteins/genetics/*metabolism ; Circadian Rhythm ; DNA-Binding Proteins/genetics/physiology ; *Gene Expression Regulation, Plant ; Genes, Plant ; Gibberellins/metabolism ; Meristem/physiology ; Mutation ; Photoperiod ; Plant Structures/physiology ; Seasons ; Temperature ; Time Factors ; Transcription Factors/genetics/physiology
    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: 1998-04-16
    Description: The lymphokine interleukin-2 (IL-2) is responsible for autocrine cell cycle progression and regulation of immune responses. Uncontrolled secretion of IL-2 results in adverse reactions ranging from anergy, to aberrant T cell activation, to autoimmunity. With the use of fluorescent in situ hybridization and single-cell polymerase chain reaction in cells with different IL-2 alleles, IL-2 expression in mature thymocytes and T cells was found to be tightly controlled by monoallelic expression. Because IL-2 is encoded at a nonimprinted autosomal locus, this result represents an unusual regulatory mode for controlling the precise expression of a single gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hollander, G A -- Zuklys, S -- Morel, C -- Mizoguchi, E -- Mobisson, K -- Simpson, S -- Terhorst, C -- Wishart, W -- Golan, D E -- Bhan, A K -- Burakoff, S J -- P01 CA39542-09/CA/NCI NIH HHS/ -- R01 AI17258-18/AI/NIAID NIH HHS/ -- R01 DK47677/DK/NIDDK NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1998 Mar 27;279(5359):2118-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pediatric Immunology, Department of Research and Children's Hospital, Basel University Medical School, 4031 Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9516115" target="_blank"〉PubMed〈/a〉
    Keywords: *Alleles ; Animals ; CD4-Positive T-Lymphocytes/cytology/*immunology ; Concanavalin A/pharmacology ; DNA Replication ; Female ; Flow Cytometry ; *Gene Expression Regulation ; Heterozygote ; In Situ Hybridization, Fluorescence ; Interleukin-2/biosynthesis/*genetics ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred C57BL ; Muridae ; Mutation ; Polymerase Chain Reaction ; S Phase ; Transcription, Genetic
    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: 2005-07-16
    Description: Whole-genome sequencing of the protozoan pathogen Trypanosoma cruzi revealed that the diploid genome contains a predicted 22,570 proteins encoded by genes, of which 12,570 represent allelic pairs. Over 50% of the genome consists of repeated sequences, such as retrotransposons and genes for large families of surface molecules, which include trans-sialidases, mucins, gp63s, and a large novel family (〉1300 copies) of mucin-associated surface protein (MASP) genes. Analyses of the T. cruzi, T. brucei, and Leishmania major (Tritryp) genomes imply differences from other eukaryotes in DNA repair and initiation of replication and reflect their unusual mitochondrial DNA. Although the Tritryp lack several classes of signaling molecules, their kinomes contain a large and diverse set of protein kinases and phosphatases; their size and diversity imply previously unknown interactions and regulatory processes, which may be targets for intervention.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉El-Sayed, Najib M -- Myler, Peter J -- Bartholomeu, Daniella C -- Nilsson, Daniel -- Aggarwal, Gautam -- Tran, Anh-Nhi -- Ghedin, Elodie -- Worthey, Elizabeth A -- Delcher, Arthur L -- Blandin, Gaelle -- Westenberger, Scott J -- Caler, Elisabet -- Cerqueira, Gustavo C -- Branche, Carole -- Haas, Brian -- Anupama, Atashi -- Arner, Erik -- Aslund, Lena -- Attipoe, Philip -- Bontempi, Esteban -- Bringaud, Frederic -- Burton, Peter -- Cadag, Eithon -- Campbell, David A -- Carrington, Mark -- Crabtree, Jonathan -- Darban, Hamid -- da Silveira, Jose Franco -- de Jong, Pieter -- Edwards, Kimberly -- Englund, Paul T -- Fazelina, Gholam -- Feldblyum, Tamara -- Ferella, Marcela -- Frasch, Alberto Carlos -- Gull, Keith -- Horn, David -- Hou, Lihua -- Huang, Yiting -- Kindlund, Ellen -- Klingbeil, Michele -- Kluge, Sindy -- Koo, Hean -- Lacerda, Daniela -- Levin, Mariano J -- Lorenzi, Hernan -- Louie, Tin -- Machado, Carlos Renato -- McCulloch, Richard -- McKenna, Alan -- Mizuno, Yumi -- Mottram, Jeremy C -- Nelson, Siri -- Ochaya, Stephen -- Osoegawa, Kazutoyo -- Pai, Grace -- Parsons, Marilyn -- Pentony, Martin -- Pettersson, Ulf -- Pop, Mihai -- Ramirez, Jose Luis -- Rinta, Joel -- Robertson, Laura -- Salzberg, Steven L -- Sanchez, Daniel O -- Seyler, Amber -- Sharma, Reuben -- Shetty, Jyoti -- Simpson, Anjana J -- Sisk, Ellen -- Tammi, Martti T -- Tarleton, Rick -- Teixeira, Santuza -- Van Aken, Susan -- Vogt, Christy -- Ward, Pauline N -- Wickstead, Bill -- Wortman, Jennifer -- White, Owen -- Fraser, Claire M -- Stuart, Kenneth D -- Andersson, Bjorn -- AI045039/AI/NIAID NIH HHS/ -- AI45038/AI/NIAID NIH HHS/ -- AI45061/AI/NIAID NIH HHS/ -- R01 AI031077/AI/NIAID NIH HHS/ -- R01 AI031077-11/AI/NIAID NIH HHS/ -- U01 AI045038/AI/NIAID NIH HHS/ -- U01 AI045039/AI/NIAID NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2005 Jul 15;309(5733):409-15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Parasite Genomics, Institute for Genomic Research, Rockville, MD 20850, USA. nelsayed@tigr.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16020725" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chagas Disease/drug therapy/parasitology ; DNA Repair ; DNA Replication ; DNA, Mitochondrial/genetics ; DNA, Protozoan/genetics ; Genes, Protozoan ; *Genome, Protozoan ; Humans ; Meiosis ; Membrane Proteins/chemistry/genetics/physiology ; Multigene Family ; Protozoan Proteins/chemistry/*genetics/physiology ; Recombination, Genetic ; Repetitive Sequences, Nucleic Acid ; Retroelements ; *Sequence Analysis, DNA ; Signal Transduction ; Telomere/genetics ; Trypanocidal Agents/pharmacology/therapeutic use ; Trypanosoma cruzi/chemistry/*genetics/physiology
    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: 2005-08-27
    Description: The malaria parasite, Plasmodium falciparum, exploits multiple ligand-receptor interactions, called invasion pathways, to invade the host erythrocyte. Strains of P. falciparum vary in their dependency on sialated red cell receptors for invasion. We show that switching from sialic acid-dependent to -independent invasion is reversible and depends on parasite ligand use. Expression of P. falciparum reticulocyte-binding like homolog 4 (PfRh4) correlates with sialic acid-independent invasion, and PfRh4 is essential for switching invasion pathways. Differential activation of PfRh4 represents a previously unknown mechanism to switch invasion pathways and provides P. falciparum with exquisite adaptability in the face of erythrocyte receptor polymorphisms and host immune responses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stubbs, Janine -- Simpson, Ken M -- Triglia, Tony -- Plouffe, David -- Tonkin, Christopher J -- Duraisingh, Manoj T -- Maier, Alexander G -- Winzeler, Elizabeth A -- Cowman, Alan F -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2005 Aug 26;309(5739):1384-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Walter and Eliza Hall Institute of Medical Research, Melbourne, Victoria 3050, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16123303" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; Erythrocytes/*parasitology ; Gene Expression Profiling ; Gene Silencing ; Genes, Protozoan ; Humans ; Ligands ; Membrane Proteins/analysis/genetics/*physiology ; Neuraminidase/pharmacology ; Oligonucleotide Array Sequence Analysis ; Plasmodium falciparum/genetics/growth & development/metabolism/*pathogenicity ; Polymerase Chain Reaction ; Protozoan Proteins/analysis/genetics/*physiology ; Recombinant Fusion Proteins/metabolism ; Sialic Acids/metabolism ; Transcription, Genetic
    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: 2005-07-16
    Description: African trypanosomes cause human sleeping sickness and livestock trypanosomiasis in sub-Saharan Africa. We present the sequence and analysis of the 11 megabase-sized chromosomes of Trypanosoma brucei. The 26-megabase genome contains 9068 predicted genes, including approximately 900 pseudogenes and approximately 1700 T. brucei-specific genes. Large subtelomeric arrays contain an archive of 806 variant surface glycoprotein (VSG) genes used by the parasite to evade the mammalian immune system. Most VSG genes are pseudogenes, which may be used to generate expressed mosaic genes by ectopic recombination. Comparisons of the cytoskeleton and endocytic trafficking systems with those of humans and other eukaryotic organisms reveal major differences. A comparison of metabolic pathways encoded by the genomes of T. brucei, T. cruzi, and Leishmania major reveals the least overall metabolic capability in T. brucei and the greatest in L. major. Horizontal transfer of genes of bacterial origin has contributed to some of the metabolic differences in these parasites, and a number of novel potential drug targets have been identified.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berriman, Matthew -- Ghedin, Elodie -- Hertz-Fowler, Christiane -- Blandin, Gaelle -- Renauld, Hubert -- Bartholomeu, Daniella C -- Lennard, Nicola J -- Caler, Elisabet -- Hamlin, Nancy E -- Haas, Brian -- Bohme, Ulrike -- Hannick, Linda -- Aslett, Martin A -- Shallom, Joshua -- Marcello, Lucio -- Hou, Lihua -- Wickstead, Bill -- Alsmark, U Cecilia M -- Arrowsmith, Claire -- Atkin, Rebecca J -- Barron, Andrew J -- Bringaud, Frederic -- Brooks, Karen -- Carrington, Mark -- Cherevach, Inna -- Chillingworth, Tracey-Jane -- Churcher, Carol -- Clark, Louise N -- Corton, Craig H -- Cronin, Ann -- Davies, Rob M -- Doggett, Jonathon -- Djikeng, Appolinaire -- Feldblyum, Tamara -- Field, Mark C -- Fraser, Audrey -- Goodhead, Ian -- Hance, Zahra -- Harper, David -- Harris, Barbara R -- Hauser, Heidi -- Hostetler, Jessica -- Ivens, Al -- Jagels, Kay -- Johnson, David -- Johnson, Justin -- Jones, Kristine -- Kerhornou, Arnaud X -- Koo, Hean -- Larke, Natasha -- Landfear, Scott -- Larkin, Christopher -- Leech, Vanessa -- Line, Alexandra -- Lord, Angela -- Macleod, Annette -- Mooney, Paul J -- Moule, Sharon -- Martin, David M A -- Morgan, Gareth W -- Mungall, Karen -- Norbertczak, Halina -- Ormond, Doug -- Pai, Grace -- Peacock, Chris S -- Peterson, Jeremy -- Quail, Michael A -- Rabbinowitsch, Ester -- Rajandream, Marie-Adele -- Reitter, Chris -- Salzberg, Steven L -- Sanders, Mandy -- Schobel, Seth -- Sharp, Sarah -- Simmonds, Mark -- Simpson, Anjana J -- Tallon, Luke -- Turner, C Michael R -- Tait, Andrew -- Tivey, Adrian R -- Van Aken, Susan -- Walker, Danielle -- Wanless, David -- Wang, Shiliang -- White, Brian -- White, Owen -- Whitehead, Sally -- Woodward, John -- Wortman, Jennifer -- Adams, Mark D -- Embley, T Martin -- Gull, Keith -- Ullu, Elisabetta -- Barry, J David -- Fairlamb, Alan H -- Opperdoes, Fred -- Barrell, Barclay G -- Donelson, John E -- Hall, Neil -- Fraser, Claire M -- Melville, Sara E -- El-Sayed, Najib M -- AI43062/AI/NIAID NIH HHS/ -- R01 AI043062/AI/NIAID NIH HHS/ -- U01 AI043062/AI/NIAID NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2005 Jul 15;309(5733):416-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1SA, UK. mb4@sanger.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16020726" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids/metabolism ; Animals ; Antigenic Variation ; Antigens, Protozoan/chemistry/genetics/immunology ; Carbohydrate Metabolism ; Chromosomes/genetics ; Cytoskeleton/chemistry/genetics/physiology ; Ergosterol/biosynthesis ; Genes, Protozoan ; *Genome, Protozoan ; Glutathione/*analogs & derivatives/metabolism ; Glycosylphosphatidylinositols/biosynthesis ; Humans ; Lipid Metabolism ; Molecular Sequence Data ; Protein Transport ; Protozoan Proteins/chemistry/*genetics/metabolism ; Pseudogenes ; Purines/metabolism ; Pyrimidines/biosynthesis ; Recombination, Genetic ; *Sequence Analysis, DNA ; Spermidine/*analogs & derivatives/metabolism ; Trypanosoma brucei brucei/chemistry/*genetics/immunology/metabolism ; Trypanosomiasis, African/parasitology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 7
    Publication Date: 2013-08-21
    Description: Lignin is a major component of plant secondary cell walls. Here we describe caffeoyl shikimate esterase (CSE) as an enzyme central to the lignin biosynthetic pathway. Arabidopsis thaliana cse mutants deposit less lignin than do wild-type plants, and the remaining lignin is enriched in p-hydroxyphenyl units. Phenolic metabolite profiling identified accumulation of the lignin pathway intermediate caffeoyl shikimate in cse mutants as compared to caffeoyl shikimate levels in the wild type, suggesting caffeoyl shikimate as a substrate for CSE. Accordingly, recombinant CSE hydrolyzed caffeoyl shikimate into caffeate. Associated with the changes in lignin, the conversion of cellulose to glucose in cse mutants increased up to fourfold as compared to that in the wild type upon saccharification without pretreatment. Collectively, these data necessitate the revision of currently accepted models of the lignin biosynthetic pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vanholme, Ruben -- Cesarino, Igor -- Rataj, Katarzyna -- Xiao, Yuguo -- Sundin, Lisa -- Goeminne, Geert -- Kim, Hoon -- Cross, Joanna -- Morreel, Kris -- Araujo, Pedro -- Welsh, Lydia -- Haustraete, Jurgen -- McClellan, Christopher -- Vanholme, Bartel -- Ralph, John -- Simpson, Gordon G -- Halpin, Claire -- Boerjan, Wout -- BB/G016232/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2013 Sep 6;341(6150):1103-6. doi: 10.1126/science.1241602. Epub 2013 Aug 15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Systems Biology, VIB (Flanders Institute for Biotechnology), Technologiepark 927, B-9052 Ghent, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23950498" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/*enzymology/genetics ; Arabidopsis Proteins/*chemistry/genetics ; Carboxylic Ester Hydrolases/*chemistry/genetics ; Glucose/chemistry ; Lignin/*biosynthesis ; Metabolic Networks and Pathways ; Mutation ; Shikimic Acid/chemistry ; Substrate Specificity
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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