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  • 1
    Monograph available for loan
    Monograph available for loan
    Cambridge : British Antarctic Survey
    Call number: AWI A4-94-0031
    Type of Medium: Monograph available for loan
    Pages: 70 S. : graph. Darst.
    ISBN: 0856651540
    Branch Library: AWI Library
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  • 2
    Publication Date: 2013-04-11
    Description: Journal of Medicinal Chemistry DOI: 10.1021/jm301585z
    Topics: Chemistry and Pharmacology
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  • 3
    Publication Date: 2012-02-29
    Description: Imprinted gene expression associated with Prader–Willi syndrome (PWS) and Angelman syndrome (AS) is controlled by two imprinting centers (ICs), the PWS-IC and the AS-IC. The PWS-IC operates in cis to activate transcription of genes that are expressed exclusively from the paternal allele. We have created a conditional allele of the PWS-IC to investigate its developmental activity. Deletion of the paternal PWS-IC in the embryo before implantation abolishes expression of the paternal-only genes in the neonatal brain. Surprisingly, deletion of the PWS-IC in early brain progenitors does not affect the subsequent imprinted status of PWS/AS genes in the newborn brain. These results indicate that the PWS-IC functions to protect the paternal epigenotype at the epiblast stage of development but is dispensable thereafter.
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 4
    Publication Date: 2019
    Description: 〈p〉Ammonia-oxidizing archaea (AOA) dominate microbial communities throughout oxic subseafloor sediment deposited over millions of years in the North Atlantic Ocean. Rates of nitrification correlated with the abundance of these dominant AOA populations, whose metabolism is characterized by ammonia oxidation, mixotrophic utilization of organic nitrogen, deamination, and the energetically efficient chemolithoautotrophic hydroxypropionate/hydroxybutyrate carbon fixation cycle. These AOA thus have the potential to couple mixotrophic and chemolithoautotrophic metabolism via mixotrophic deamination of organic nitrogen, followed by oxidation of the regenerated ammonia for additional energy to fuel carbon fixation. This metabolic feature likely reduces energy loss and improves AOA fitness under energy-starved, oxic conditions, thereby allowing them to outcompete other taxa for millions of years.〈/p〉
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 5
    Publication Date: 2011-07-06
    Description: Author(s): G. G. Scapellato, S. Boninelli, E. Napolitani, E. Bruno, A. J. Smith, S. Mirabella, M. Mastromatteo, D. De Salvador, R. Gwilliam, C. Spinella, A. Carnera, and F. Priolo The effect of O implantation in crystalline Ge on the density of native point defects has been investigated through transmission electron microscopy and B diffusion experiments. Annealing at 650 °C following O implants produces a band of defects (∼5–10 nm), compatible with GeO 2 nanoclusters (NCs). A... [Phys. Rev. B 84, 024104] Published Tue Jul 05, 2011
    Keywords: Structure, structural phase transitions, mechanical properties, defects
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
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  • 6
    Publication Date: 2014-09-12
    Description: Bird flocks are characteristic of environments worldwide, and there is a rich literature investigating the purported costs and benefits for attendant species. Few studies, however, have investigated the potential sources of individual variation in flocking behavior. We hypothesized that flocking propensity would vary among individuals as a function of intrinsic, environmental, and social characteristics, as well as flock-joining opportunities as a function of home range size and number of flocks present. We tracked wedge-billed woodcreepers ( Glyphorynchus spirurus ) using radiotelemetry from January–February, 2011 and January–March, 2012 at Tiputini Biodiversity Station in eastern Ecuador. Individual home ranges overlapped a mean of 2.6 (0.2 standard error [SE]) individuals by a mean of 44% (0.09 SE) per overlapping individual. Flocking propensity was 32% in 2011 and 20% in 2012, with considerable individual variation (2–35%). Expected flocking propensity was 45% based on average home range size and number of flocks in the study area; assuming that dominant individuals excluded subordinates in areas of home range overlap reduced the predicted value to 35%. Individual flocking propensity was positively correlated with body condition, frequency of aggressive behavior, and probability of joining a flock given presence, and negatively correlated with number of overlapping conspecifics. Our results suggest that woodcreepers compete for access to flocks within areas of home range overlap, which results in limited opportunities for some individuals to join flocks. The costs and benefits of group behavior may, therefore, vary among individuals within a species.
    Print ISSN: 1045-2249
    Electronic ISSN: 1465-7279
    Topics: Biology
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  • 7
    Publication Date: 2002-07-20
    Description: Class IA phosphoinositide 3-kinases (PI3Ks) are a family of p85/p110 heterodimeric lipid kinases that generate second messenger signals downstream of tyrosine kinases, thereby controlling cell metabolism, growth, proliferation, differentiation, motility, and survival. Mammals express three class IA catalytic subunits: p110alpha, p110beta, and p110delta. It is unclear to what extent these p110 isoforms have overlapping or distinct biological roles. Mice expressing a catalytically inactive form of p110delta (p110delta(D910A)) were generated by gene targeting. Antigen receptor signaling in B and T cells was impaired and immune responses in vivo were attenuated in p110delta mutant mice. They also developed inflammatory bowel disease. These results reveal a selective role for p110delta in immunity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Okkenhaug, Klaus -- Bilancio, Antonio -- Farjot, Geraldine -- Priddle, Helen -- Sancho, Sara -- Peskett, Emma -- Pearce, Wayne -- Meek, Stephen E -- Salpekar, Ashreena -- Waterfield, Michael D -- Smith, Andrew J H -- Vanhaesebroeck, Bart -- New York, N.Y. -- Science. 2002 Aug 9;297(5583):1031-4. Epub 2002 Jul 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ludwig Institute for Cancer Research, 91 Riding House Street, London W1W 7BS, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12130661" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/immunology ; B-Lymphocytes/enzymology/*immunology ; Bone Marrow Cells/cytology ; Catalytic Domain ; Cell Differentiation ; Cell Division ; Female ; Gene Targeting ; Hematopoietic Stem Cells/cytology ; Immunoglobulins/blood ; Inflammatory Bowel Diseases/immunology/pathology ; Interleukin-2/biosynthesis ; Intestinal Mucosa/pathology ; Lymph Nodes/cytology/pathology ; Lymphocyte Activation ; Male ; Mice ; Mice, Inbred C57BL ; Phosphatidylinositol 3-Kinases/genetics/*metabolism ; Point Mutation ; *Protein-Serine-Threonine Kinases ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-akt ; Receptors, Antigen, B-Cell/*metabolism ; Receptors, Antigen, T-Cell/*metabolism ; Signal Transduction ; Spleen/cytology/pathology ; T-Lymphocytes/enzymology/*immunology ; Thymus Gland/cytology
    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: 2001-11-24
    Description: Because there is a theoretical possibility that the British national sheep flock is infected with bovine spongiform encephalopathy (BSE), we examined the extent of a putative epidemic. An age cohort analysis based on numbers of infected cattle, dose responses of cattle and sheep to BSE, levels of exposure to infected feed, and number of BSE-susceptible sheep in the United Kingdom showed that at the putative epidemic peak in 1990, the number of cases of BSE-infected sheep would have ranged from fewer than 10 to about 1500. The model predicts that fewer than 20 clinical cases of BSE in sheep would be expected in 2001 if maternal transmission occurred at a rate of 10%. Although there are large uncertainties in the parameter estimates, all indications are that current prevalence is low; however, a simple model of flock-to-flock BSE transmission shows that horizontal transmission, if it has occurred, could eventually cause a large epidemic.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kao, R R -- Gravenor, M B -- Baylis, M -- Bostock, C J -- Chihota, C M -- Evans, J C -- Goldmann, W -- Smith, A J A -- McLean, A R -- New York, N.Y. -- Science. 2002 Jan 11;295(5553):332-5. Epub 2001 Nov 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK. rowland.kao@zoo.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11719694" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; *Animal Feed ; Animal Husbandry ; Animals ; Cattle ; Cohort Studies ; Disease Outbreaks/*veterinary ; Disease Transmission, Infectious ; Eating ; Encephalopathy, Bovine Spongiform/*epidemiology/*transmission ; Female ; Genetic Predisposition to Disease ; Genotype ; Glutamine/genetics ; Great Britain/epidemiology ; Infectious Disease Transmission, Vertical ; Logistic Models ; Models, Biological ; Models, Statistical ; Prevalence ; Prions/chemistry/genetics ; Probability ; Scrapie/epidemiology/transmission ; Sheep/genetics ; Sheep Diseases/*epidemiology/transmission ; Time Factors
    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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  • 9
    Publication Date: 2008-11-07
    Description: DNA sequence information underpins genetic research, enabling discoveries of important biological or medical benefit. Sequencing projects have traditionally used long (400-800 base pair) reads, but the existence of reference sequences for the human and many other genomes makes it possible to develop new, fast approaches to re-sequencing, whereby shorter reads are compared to a reference to identify intraspecies genetic variation. Here we report an approach that generates several billion bases of accurate nucleotide sequence per experiment at low cost. Single molecules of DNA are attached to a flat surface, amplified in situ and used as templates for synthetic sequencing with fluorescent reversible terminator deoxyribonucleotides. Images of the surface are analysed to generate high-quality sequence. We demonstrate application of this approach to human genome sequencing on flow-sorted X chromosomes and then scale the approach to determine the genome sequence of a male Yoruba from Ibadan, Nigeria. We build an accurate consensus sequence from 〉30x average depth of paired 35-base reads. We characterize four million single-nucleotide polymorphisms and four hundred thousand structural variants, many of which were previously unknown. Our approach is effective for accurate, rapid and economical whole-genome re-sequencing and many other biomedical applications.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2581791/" 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/PMC2581791/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bentley, David R -- Balasubramanian, Shankar -- Swerdlow, Harold P -- Smith, Geoffrey P -- Milton, John -- Brown, Clive G -- Hall, Kevin P -- Evers, Dirk J -- Barnes, Colin L -- Bignell, Helen R -- Boutell, Jonathan M -- Bryant, Jason -- Carter, Richard J -- Keira Cheetham, R -- Cox, Anthony J -- Ellis, Darren J -- Flatbush, Michael R -- Gormley, Niall A -- Humphray, Sean J -- Irving, Leslie J -- Karbelashvili, Mirian S -- Kirk, Scott M -- Li, Heng -- Liu, Xiaohai -- Maisinger, Klaus S -- Murray, Lisa J -- Obradovic, Bojan -- Ost, Tobias -- Parkinson, Michael L -- Pratt, Mark R -- Rasolonjatovo, Isabelle M J -- Reed, Mark T -- Rigatti, Roberto -- Rodighiero, Chiara -- Ross, Mark T -- Sabot, Andrea -- Sankar, Subramanian V -- Scally, Aylwyn -- Schroth, Gary P -- Smith, Mark E -- Smith, Vincent P -- Spiridou, Anastassia -- Torrance, Peta E -- Tzonev, Svilen S -- Vermaas, Eric H -- Walter, Klaudia -- Wu, Xiaolin -- Zhang, Lu -- Alam, Mohammed D -- Anastasi, Carole -- Aniebo, Ify C -- Bailey, David M D -- Bancarz, Iain R -- Banerjee, Saibal -- Barbour, Selena G -- Baybayan, Primo A -- Benoit, Vincent A -- Benson, Kevin F -- Bevis, Claire -- Black, Phillip J -- Boodhun, Asha -- Brennan, Joe S -- Bridgham, John A -- Brown, Rob C -- Brown, Andrew A -- Buermann, Dale H -- Bundu, Abass A -- Burrows, James C -- Carter, Nigel P -- Castillo, Nestor -- Chiara E Catenazzi, Maria -- Chang, Simon -- Neil Cooley, R -- Crake, Natasha R -- Dada, Olubunmi O -- Diakoumakos, Konstantinos D -- Dominguez-Fernandez, Belen -- Earnshaw, David J -- Egbujor, Ugonna C -- Elmore, David W -- Etchin, Sergey S -- Ewan, Mark R -- Fedurco, Milan -- Fraser, Louise J -- Fuentes Fajardo, Karin V -- Scott Furey, W -- George, David -- Gietzen, Kimberley J -- Goddard, Colin P -- Golda, George S -- Granieri, Philip A -- Green, David E -- Gustafson, David L -- Hansen, Nancy F -- Harnish, Kevin -- Haudenschild, Christian D -- Heyer, Narinder I -- Hims, Matthew M -- Ho, Johnny T -- Horgan, Adrian M -- Hoschler, Katya -- Hurwitz, Steve -- Ivanov, Denis V -- Johnson, Maria Q -- James, Terena -- Huw Jones, T A -- Kang, Gyoung-Dong -- Kerelska, Tzvetana H -- Kersey, Alan D -- Khrebtukova, Irina -- Kindwall, Alex P -- Kingsbury, Zoya -- Kokko-Gonzales, Paula I -- Kumar, Anil -- Laurent, Marc A -- Lawley, Cynthia T -- Lee, Sarah E -- Lee, Xavier -- Liao, Arnold K -- Loch, Jennifer A -- Lok, Mitch -- Luo, Shujun -- Mammen, Radhika M -- Martin, John W -- McCauley, Patrick G -- McNitt, Paul -- Mehta, Parul -- Moon, Keith W -- Mullens, Joe W -- Newington, Taksina -- Ning, Zemin -- Ling Ng, Bee -- Novo, Sonia M -- O'Neill, Michael J -- Osborne, Mark A -- Osnowski, Andrew -- Ostadan, Omead -- Paraschos, Lambros L -- Pickering, Lea -- Pike, Andrew C -- Pike, Alger C -- Chris Pinkard, D -- Pliskin, Daniel P -- Podhasky, Joe -- Quijano, Victor J -- Raczy, Come -- Rae, Vicki H -- Rawlings, Stephen R -- Chiva Rodriguez, Ana -- Roe, Phyllida M -- Rogers, John -- Rogert Bacigalupo, Maria C -- Romanov, Nikolai -- Romieu, Anthony -- Roth, Rithy K -- Rourke, Natalie J -- Ruediger, Silke T -- Rusman, Eli -- Sanches-Kuiper, Raquel M -- Schenker, Martin R -- Seoane, Josefina M -- Shaw, Richard J -- Shiver, Mitch K -- Short, Steven W -- Sizto, Ning L -- Sluis, Johannes P -- Smith, Melanie A -- Ernest Sohna Sohna, Jean -- Spence, Eric J -- Stevens, Kim -- Sutton, Neil -- Szajkowski, Lukasz -- Tregidgo, Carolyn L -- Turcatti, Gerardo -- Vandevondele, Stephanie -- Verhovsky, Yuli -- Virk, Selene M -- Wakelin, Suzanne -- Walcott, Gregory C -- Wang, Jingwen -- Worsley, Graham J -- Yan, Juying -- Yau, Ling -- Zuerlein, Mike -- Rogers, Jane -- Mullikin, James C -- Hurles, Matthew E -- McCooke, Nick J -- West, John S -- Oaks, Frank L -- Lundberg, Peter L -- Klenerman, David -- Durbin, Richard -- Smith, Anthony J -- B05823/Biotechnology and Biological Sciences Research Council/United Kingdom -- G0701805/Medical Research Council/United Kingdom -- MOL04534/Biotechnology and Biological Sciences Research Council/United Kingdom -- Z01 HG200330-03/Intramural NIH HHS/ -- Biotechnology and Biological Sciences Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2008 Nov 6;456(7218):53-9. doi: 10.1038/nature07517.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Illumina Cambridge Ltd. (Formerly Solexa Ltd), Chesterford Research Park, Little Chesterford, Nr Saffron Walden, Essex CB10 1XL, UK. dbentley@illumina.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18987734" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosomes, Human, X/genetics ; Consensus Sequence/genetics ; Genome, Human/*genetics ; Genomics/economics/*methods ; Genotype ; Humans ; Male ; Nigeria ; Polymorphism, Single Nucleotide/genetics ; Sensitivity and Specificity ; Sequence Analysis, DNA/economics/*methods
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2008-05-02
    Description: Phosphoinositide 3-kinases (PI3Ks) signal downstream of multiple cell-surface receptor types. Class IA PI3K isoforms couple to tyrosine kinases and consist of a p110 catalytic subunit (p110alpha, p110beta or p110delta), constitutively bound to one of five distinct p85 regulatory subunits. PI3Ks have been implicated in angiogenesis, but little is known about potential selectivity among the PI3K isoforms and their mechanism of action in endothelial cells during angiogenesis in vivo. Here we show that only p110alpha activity is essential for vascular development. Ubiquitous or endothelial cell-specific inactivation of p110alpha led to embryonic lethality at mid-gestation because of severe defects in angiogenic sprouting and vascular remodelling. p110alpha exerts this critical endothelial cell-autonomous function by regulating endothelial cell migration through the small GTPase RhoA. p110alpha activity is particularly high in endothelial cells and preferentially induced by tyrosine kinase ligands (such as vascular endothelial growth factor (VEGF)-A). In contrast, p110beta in endothelial cells signals downstream of G-protein-coupled receptor (GPCR) ligands such as SDF-1alpha, whereas p110delta is expressed at low level and contributes only minimally to PI3K activity in endothelial cells. These results provide the first in vivo evidence for p110-isoform selectivity in endothelial PI3K signalling during angiogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Graupera, Mariona -- Guillermet-Guibert, Julie -- Foukas, Lazaros C -- Phng, Li-Kun -- Cain, Robert J -- Salpekar, Ashreena -- Pearce, Wayne -- Meek, Stephen -- Millan, Jaime -- Cutillas, Pedro R -- Smith, Andrew J H -- Ridley, Anne J -- Ruhrberg, Christiana -- Gerhardt, Holger -- Vanhaesebroeck, Bart -- BB/C505659/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/C505659/2/Biotechnology and Biological Sciences Research Council/United Kingdom -- G0601093/Medical Research Council/United Kingdom -- G0601093(79633)/Medical Research Council/United Kingdom -- G0700711/Medical Research Council/United Kingdom -- Cancer Research UK/United Kingdom -- England -- Nature. 2008 May 29;453(7195):662-6. doi: 10.1038/nature06892. Epub 2008 Apr 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Cell Signalling, Institute of Cancer, Queen Mary, University of London, Charterhouse Square, London EC1M 6BQ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18449193" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Movement ; Cells, Cultured ; Class I Phosphatidylinositol 3-Kinases ; Endothelial Cells/*cytology/*enzymology ; Female ; Humans ; Mice ; *Neovascularization, Physiologic ; Phosphatidylinositol 3-Kinases/genetics/*metabolism ; RNA Interference ; Rats ; Signal Transduction/drug effects ; Vascular Endothelial Growth Factor A/pharmacology ; Wounds and Injuries ; rho GTP-Binding Proteins/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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