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  • 1
    Monograph available for loan
    Monograph available for loan
    Using the ecosystem approach to implement the convention on biological diversity : key issues and case studies (2003)
    Gland [u.a.] : IUCN
    Details Availability
    Call number: PIKB 160-07-0151
    Type of Medium: Monograph available for loan
    Pages: II, 118 S. , 1 Beil. , 24 cm
    ISBN: 2831707420
    Series Statement: Ecosystem management series 2
    Branch Library: PIK Library
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  • 2
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    An adaptable multiple power source for mass spectrometry and other scientific instruments (2015)
    American Institute of Physics (AIP)
    Details
    Publication Date: 2015-09-18
    Description: An Adaptable Multiple Power Source (AMPS) system has been designed and constructed. The AMPS system can provide up to 16 direct current (DC) (±400 V; 5 mA), 4 radio frequency (RF) (two 500 V PP sinusoidal signals each, 0.5-5 MHz) channels, 2 high voltage sources (±6 kV), and one ∼40 W, 250 °C temperature-regulated heater. The system is controlled by a microcontroller, capable of communicating with its front panel or a computer. It can assign not only pre-saved fixed DC and RF signals but also profiled DC voltages. The AMPS system is capable of driving many mass spectrometry components and ancillary devices and can be adapted to other instrumentation/engineering projects.
    Print ISSN: 0034-6748
    Electronic ISSN: 1089-7623
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Published by American Institute of Physics (AIP)
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  • 3
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    Estimating the Relationship between Food Prices and Food Consumption--Methods Matter (2016)
    Oxford University Press
    Details
    Publication Date: 2016-08-20
    Description: Concerns about the growing prevalence of obesity worldwide have led researchers and policy makers to investigate the potential health impact of fiscal policies such as taxes on unhealthy foods. A common instrument used to measure the relationship between food prices and food consumption is the price elasticity of demand. Using meta-regression analysis we assessed how differences in methodological approaches to estimating demand affected food price elasticities. Most methodological differences had a statistically significant impact on elasticity estimates, which stresses the importance of using meta-estimates or testing the sensitivity of simulation outcomes to a range of elasticity parameters before drawing policy conclusions.
    Keywords: D11 - Consumer Economics: Theory, H31 - Household, Q18 - Agricultural Policy ; Food Policy
    Print ISSN: 2040-5790
    Electronic ISSN: 2040-5804
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Published by Oxford University Press
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  • 4
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    Identification of a fourth mannose 6-phosphate binding site in the cation-independent mannose 6-phosphate receptor (2015)
    Oxford University Press
    Details
    Publication Date: 2015-04-28
    Description: The 300 kDa cation-independent mannose 6-phosphate receptor (CI-MPR) plays an essential role in lysosome biogenesis by targeting ~60 different phosphomannosyl-containing acid hydrolases to the lysosome. This type I membrane glycoprotein has a large extracellular region comprised of 15 homologous domains. Two mannose 6-phosphate (M6P) binding sites have been mapped to domains 3 and 9, whereas domain 5 binds preferentially to the phosphodiester, M6P- N -acetylglucosamine (GlcNAc). A structure-based sequence alignment predicts that the C-terminal domain 15 contains three out of the four conserved residues identified as essential for carbohydrate recognition by domains 3, 5 and 9 of the CI-MPR, but lacks two cysteine residues that are predicted to form a disulfide bond. To determine whether domain 15 of the CI-MPR has lectin activity and to probe its carbohydrate-binding specificity, truncated forms of the CI-MPR were tested for binding to acid hydrolases with defined N -glycans in surface plasmon resonance analyses, and used to interrogate a phosphorylated glycan microarray. The results show that a construct encoding domains 14–15 binds both M6P and M6P-GlcNAc with similar affinity ( K d = 13 and 17 μM, respectively). Site-directed mutagenesis studies demonstrate the essential role of the conserved Tyr residue in domain 15 for phosphomannosyl binding. A structural model of domain 15 was generated that predicted an Arg residue to be in the binding pocket and mutagenesis studies confirmed its important role in carbohydrate binding. Together, these results show that the CI-MPR contains a fourth carbohydrate-recognition site capable of binding both phosphomonoesters and phosphodiesters.
    Print ISSN: 0959-6658
    Electronic ISSN: 1460-2423
    Topics: Biology , Medicine
    Published by Oxford University Press
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  • 5
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    Quinary structure and protein stability [Chemistry] (2015)
    National Academy of Sciences
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    Publication Date: 2015-02-11
    Description: Protein quinary interactions organize the cellular interior and its metabolism. Although the interactions stabilizing secondary, tertiary, and quaternary protein structure are well defined, details about the protein–matrix contacts that comprise quinary structure remain elusive. This gap exists because proteins function in the crowded cellular environment, but are traditionally studied in...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 6
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    The glycan-binding properties of the cation-independent mannose 6-phosphate receptor are evolutionary conserved in vertebrates (2012)
    Oxford University Press
    Details
    Publication Date: 2012-05-19
    Description: The 300-kDa cation-independent mannose 6-phosphate receptor (CI-MPR) plays an essential role in the biogenesis of lysosomes by delivering newly synthesized lysosomal enzymes from the trans Golgi network to the endosomal system. The CI-MPR is expressed in most eukaryotes, with Saccharomyces cerevisiae and Caenorhabditis elegans being notable exceptions. Although the repertoire of glycans recognized by the bovine receptor has been studied extensively, little is known concerning the ligand-binding properties of the CI-MPR from non-mammalian species. To assess the evolutionary conservation of the CI-MPR, surface plasmon resonance analyses using lysosomal enzymes with defined N -glycans were carried out to probe the glycan-binding specificity of the Danio rerio CI-MPR. The results demonstrate that the D. rerio CI-MPR harbors three glycan-binding sites that, like the bovine CI-MPR, map to domains 3, 5 and 9 of its 15-domain-containing extracytoplasmic region. Analyses on a phosphorylated glycan microarray further demonstrated the unique binding properties of each of the three sites and showed that, similar to the bovine CI-MPR, only domain 5 of the D. rerio CI-MPR is capable of recognizing Man-P-GlcNAc-containing glycans.
    Print ISSN: 0959-6658
    Electronic ISSN: 1460-2423
    Topics: Biology , Medicine
    Published by Oxford University Press
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  • 7
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    Cross-platform comparison of glycan microarray formats (2014)
    Oxford University Press
    Details
    Publication Date: 2014-04-29
    Description: Carbohydrates participate in almost every aspect of biology from protein sorting to modulating cell differentiation and cell–cell interactions. To date, the majority of data gathered on glycan expression has been obtained via analysis with either anti-glycan antibodies or lectins. A detailed understanding of the specificities of these reagents is critical to the analysis of carbohydrates in biological systems. Glycan microarrays are increasingly used to determine the binding specificity of glycan-binding proteins (GBPs). In this study, six different glycan microarray platforms with different modes of glycan presentation were compared using five well-known lectins; concanavalin A, Helix pomatia agglutinin, Maackia amurensis lectin I, Sambucus nigra agglutinin and wheat germ agglutinin. A new method (universal threshold) was developed to facilitate systematic comparisons across distinct array platforms. The strongest binders of each lectin were identified using the universal threshold across all platforms while identification of weaker binders was influenced by platform-specific factors including presentation of determinants, array composition and self-reported thresholding methods. This work compiles a rich dataset for comparative analysis of glycan array platforms and has important implications for the implementation of microarrays in the characterization of GBPs.
    Print ISSN: 0959-6658
    Electronic ISSN: 1460-2423
    Topics: Biology , Medicine
    Published by Oxford University Press
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  • 8
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    GlycoPattern: a web platform for glycan array mining (2014)
    Oxford University Press
    Details
    Publication Date: 2014-11-26
    Description: : GlycoPattern is Web-based bioinformatics resource to support the analysis of glycan array data for the Consortium for Functional Glycomics. This resource includes algorithms and tools to discover structural motifs, a heatmap visualization to compare multiple experiments, hierarchical clustering of Glycan Binding Proteins with respect to their binding motifs and a structural search feature on the experimental data. Availability and implementation: GlycoPattern is freely available on the Web at http://glycopattern.emory.edu with all major browsers supported. Contact: sanjay.agravat@emory.edu
    Print ISSN: 1367-4803
    Electronic ISSN: 1460-2059
    Topics: Biology , Computer Science , Medicine
    Published by Oxford University Press
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  • 9
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    Primary sequence information from intact proteins by electrospray ionization tandem mass spectrometry (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-04-13
    Description: Tandem mass spectrometry has been used to obtain information related to portions of the primary sequence for an intact protein, bovine ribonuclease A. Multiply charged molecular ions, generated by electrospray ionization, were collisionally dissociated at low energies in a triple quadrupole mass spectrometer to yield singly and multiply charged fragment ions that can be assigned to the known sequence of the protein. Dissociation of the highly charged molecular ions resulted in pairs of complementary product ions. The higher order (gas-phase) protein structure affects the dissociation processes, as observed in comparisons of tandem mass spectra of the native and disulfide-reduced forms of ribonuclease A.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Loo, J A -- Edmonds, C G -- Smith, R D -- GM 42940/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Apr 13;248(4952):201-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Chemical Sciences Department, Pacific Northwest Laboratory, Richland, WA 99352.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2326633" target="_blank"〉PubMed〈/a〉
    Keywords: *Amino Acid Sequence ; Animals ; Cattle ; Disulfides ; Mass Spectrometry/methods ; Oxidation-Reduction ; *Proteins ; *Ribonuclease, Pancreatic
    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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  • 10
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    Computational approaches to define a human milk metaglycome (2016)
    Oxford University Press
    Details
    Publication Date: 2016-05-14
    Description: Motivation: The goal of deciphering the human glycome has been hindered by the lack of high-throughput sequencing methods for glycans. Although mass spectrometry (MS) is a key technology in glycan sequencing, MS alone provides limited information about the identification of monosaccharide constituents, their anomericity and their linkages. These features of individual, purified glycans can be partly identified using well-defined glycan-binding proteins, such as lectins and antibodies that recognize specific determinants within glycan structures. Results: We present a novel computational approach to automate the sequencing of glycans using metadata-assisted glycan sequencing, which combines MS analyses with glycan structural information from glycan microarray technology. Success in this approach was aided by the generation of a ‘virtual glycome’ to represent all potential glycan structures that might exist within a metaglycomes based on a set of biosynthetic assumptions using known structural information. We exploited this approach to deduce the structures of soluble glycans within the human milk glycome by matching predicted structures based on experimental data against the virtual glycome. This represents the first meta-glycome to be defined using this method and we provide a publically available web-based application to aid in sequencing milk glycans. Availability and implementation: http://glycomeseq.emory.edu Contact: sagravat@bidmc.harvard.edu Supplementary information: Supplementary data are available at Bioinformatics online.
    Print ISSN: 1367-4803
    Electronic ISSN: 1460-2059
    Topics: Biology , Computer Science , Medicine
    Published by Oxford University Press
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