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  • 1
    Electronic Resource
    Electronic Resource
    Protein and other compositional differences of the extracellular material from slimy and non-slimy colonies of non-mucoid Pseudomonas aeruginosa (1991)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 81 (1991), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract: The composition of extracellular material produced by non-mucoid strains of Pseudomonas aeruginosa differed when grown on surfaces that either did or did not induce the formation of slime under conditions where the medium was identical. The nature of the changes in protein composition indicated that protein expression differed in the course of growth on the two surfaces, and hence that there were physiological consequences associated with growth under conditions which do or do not lead to slime formation. The compositional differences also included elevated levels in extracellular material from the slimy colonies of two virulence factors, protease and rhamnolipids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1991.tb04768.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Development of a method to assess binding of astaxanthin to Atlantic salmon Salmo salar L. muscle proteins (2005)
    Oxford, UK : Blackwell Science Ltd
    Aquaculture research 36 (2005), S. 0 
    Details
    ISSN: 1365-2109
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Several methods were examined to characterize the binding between astaxanthin and salmon muscle protein(s) in order to provide tools for evaluation of the role of muscle proteins on astaxanthin retention in Atlantic salmon Salmo salar L. flesh. The methods included gel filtration chromatography, displacement of a hydrophobic probe and ultrafiltration. With gel filtration chromatography, aggregation of astaxanthin under the experimental conditions was a major problem for the separation of bound astaxanthin from free astaxanthin because the apparent molecular weight of aggregated astaxanthin or astaxanthin micelles was in the range of protein–astaxanthin complexes. Displacement of the fluorescent probe 8-anilino-1-naphthalenesulphonate (ANS) was not effective as astaxanthin quenched the fluorophore so that displacement could not be observed. An ultrafiltration method was developed using 200-mM sodium cholate for dispersion of astaxanthin aggregates. This allowed unbound astaxanthin to be separated from bound astaxanthin using a 30-kDa filter. After salmon muscle proteins were solubilized in different fractions by sequential extraction using low ionic strength solutions, the astaxanthin binding of different fractions was assessed using the ultrafiltration method. The significant difference (P〈0.05) observed in the astaxanthin binding of the various fractions suggests an application of this assay to detect differences in affinity of proteins for astaxanthin. The results also suggest that proteins other than actomyosin or actin can bind astaxanthin in Atlantic salmon flesh. This method can be used for the identification of astaxanthin-binding proteins in salmon flesh and other tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2109.2004.01205.x
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  • 3
    Electronic Resource
    Electronic Resource
    Electro-immunoblotting characterization ofPseudo-nitzschia multiseries andP. pungens antigens recognized by antibodies directed against whole cells (1996)
    Springer
    Journal of applied phycology 8 (1996), S. 51-58 
    Details
    ISSN: 1573-5176
    Keywords: Amnesic shellfish poison ; domoic acid ; Pseudo-nitzschia multiseries ; Pseudo-nitzschia pungens ; polyclonal antibody ; Western blot
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Separate polyclonal antibodies have previously been developed against the domoic-acid-producingPseudonitzschia multiseries (=Pseudo-nitzschia pungens f.multiseries) and the non-toxicP. pungens (=P. pungens f.pungens). These antibodies bind to the surface of the diatoms as shown by immunofluorescence studies. Here we examine the molecular nature of the antigens by Western blotting (electro-immunoblotting) analysis. The major antigens for both polyclonal antibodies migrated as high molecular-weight diffuse bands, mostly remaining in the stacking gel, using an SDS-PAGE system. The antibodies prepared againstP. multiseries strongly labelled the high molecular-weight antigens of allP. multiseries strains tested and showed little reactivity towardsP. pungens extracts on Western blots.P. pungens antibodies strongly labelled high molecular-weightP. pungens antigens and faintly labelled a fewP. multiseries antigens. The selectivity of the antibodies for their respective species correlates with the results of the immunofluorescence experiments, suggesting that the antigens examined in this study are responsible for the selective labelling in immunofluorescence studies. The electrophoretic mobility and the antibody labelling of antigens were not altered by proteolytic digestion of cell pellets. However, disruption of carbohydrates in the pellets by treatment with periodic acid resulted in loss of the antigen. These data suggest that the major antigens of toxicP. multiseries and non-toxicP. pungens are high molecular-weight (°〉100kDa) polysaccharides located on the surface of these diatoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02186222
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  • 4
    Electronic Resource
    Electronic Resource
    A silver stain protocol for proteins yielding high resolution and transparent background in sodium dodecyl sulfate-polyacrylamide gels (1995)
    Weinheim : Wiley-Blackwell
    Electrophoresis 16 (1995), S. 948-951 
    Details
    ISSN: 0173-0835
    Keywords: Silver staining ; Protein ; Sodium dodecyl sulfate-polyacryl-amide gel electrophoresis ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: A simple, sensitive silver staining method for sodium dodecyl sulfate polyacrylamide gel electrophoresis has been developed which yields high resolution of proteins with a transparent background. The method includes the incorporation of a water wash after a short fixation step in ethanol/acetic acid and prior to glutaraldehyde cross-linking, which appears to be necessary for the high resolution staining of protein bands and the low background staining.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elps.11501601159
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  • 5
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    Subglacial Geology and Geomorphology of the Pensacola‐Pole Basin, East Antarctica (2019)
    Wiley
    In:  EPIC3Geochemistry Geophysics Geosystems, Wiley, 20, ISSN: 1525-2027
    Details
    Publication Date: 2020-07-02
    Description: The East Antarctic Ice Sheet (EAIS) is underlain by a series of low‐lying subglacial sedimentary basins. The extent, geology, and basal topography of these sedimentary basins are important boundary conditions governing the dynamics of the overlying ice sheet. This is particularly pertinent for basins close to the grounding line wherein the EAIS is grounded below sea level and therefore potentially vulnerable to rapid retreat. Here we analyze newly acquired airborne geophysical data over the Pensacola‐Pole Basin (PPB), a previously unexplored sector of the EAIS. Using a combination of gravity and magnetic and ice‐penetrating radar data, we present the first detailed subglacial sedimentary basin model for the PPB. Radar data reveal that the PPB is defined by a topographic depression situated ~500 m below sea level. Gravity and magnetic depth‐to‐source modeling indicate that the southern part of the basin is underlain by a sedimentary succession 2–3 km thick. This is interpreted as an equivalent of the Beacon Supergroup and associated Ferrar dolerites that are exposed along the margin of East Antarctica. However, we find that similar rocks appear to be largely absent from the northern part of the basin, close to the present‐day grounding line. In addition, the eastern margin of the basin is characterized by a major geological boundary and a system of overdeepened subglacial troughs. We suggest that these characteristics of the basin may reflect the behavior of past ice sheets and/or exert an influence on the present‐day dynamics of the overlying EAIS.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 6
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    AntArchitecture: an international project to use Antarctic englacial layering to interrogate stability of the Antarctic Ice Sheets (2019)
    In:  EPIC3IGS Symposium Five Decades of Radioglaciology, Stanford, California, USA, 2019-07-08-2019-07-12
    Details
    Publication Date: 2019-08-12
    Description: ‘AntArchitecture’ is a new Action Group of the Scientific Committee for Antarctic Research that aims for the first time to determine the stability of the Antarctic ice sheets over past glacial cycles directly from the internal architecture of the ice. Internal architecture describes the 3D internal structure of the ice imaged by multiple radarâ-sounding surveys undertaken across Antarctica over the last five decades. AntArchitecture aspires to bring together the key datasets on Antarctic Ice Sheet internal layering from the principal institutions and scientists who have been responsible for acquiring, processing and storing them over the last four decades. Key activities include coordinating data-transfer and data-lodging exercises between institutions/countries that will allow datasets acquired by different radar systems to be combined for pan-ontinental analysis, and the development of an optimized processing flow for analysis of past data and advice on where future data acquisition needs to be targeted. An expanded outline of AntArchitecture and its timeline of activities can be accessed here: https://www.scar.org/science/antarchitecture/about/ This presentation provides a status report of activities and achievement of AntArchitecture to July 2019.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 7
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    Antarctic ice rises and rumples: Their properties and significance for ice-sheet dynamics and evolution (2015)
    In:  EPIC3Earth-Science Reviews, 150, pp. 724-745, ISSN: 00128252
    Details
    Publication Date: 2017-06-15
    Repository Name: EPIC Alfred Wegener Institut
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  • 8
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    Lake Vostok (2011)
    Springer, Dordrecht, The Netherlands
    In:  EPIC3Encyclopedia of Snow, Ice and Glaciers, Encyclopedia of Snow, Ice and Glaciers, Springer, Dordrecht, The Netherlands, pp. 687-690, ISSN: 1388-4360
    Details
    Publication Date: 2014-04-15
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
    Format: application/pdf
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  • 9
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    Antarctic Bedmap data: Findable, Accessible, Interoperable, and Reusable (FAIR) sharing of 60 years of ice bed, surface, and thickness data (2024)
    Egu-Copernicus
    Details
    Publication Date: 2024-01-11
    Description: One of the key components of this research has been the mapping of Antarctic bed topography and ice thickness parameters that are crucial for modelling ice flow and hence for predicting future ice loss and the ensuing sea level rise. Supported by the Scientific Committee on Antarctic Research (SCAR), the Bedmap3 Action Group aims not only to produce new gridded maps of ice thickness and bed topography for the international scientific community, but also to standardize and make available all the geophysical survey data points used in producing the Bedmap gridded products. Here, we document the survey data used in the latest iteration, Bedmap3, incorporating and adding to all of the datasets previously used for Bedmap1 and Bedmap2, including ice bed, surface and thickness point data from all Antarctic geophysical campaigns since the 1950s. More specifically, we describe the processes used to standardize and make these and future surveys and gridded datasets accessible under the Findable, Accessible, Interoperable, and Reusable (FAIR) data principles. With the goals of making the gridding process reproducible and allowing scientists to re-use the data freely for their own analysis, we introduce the new SCAR Bedmap Data Portal (https://bedmap.scar.org, last access: 1 March 2023) created to provide unprecedented open access to these important datasets through a web-map interface. We believe that this data release will be a valuable asset to Antarctic research and will greatly extend the life cycle of the data held within it. Data are available from the UK Polar Data Centre: https://data.bas.ac.uk (last access: 5 May 2023​​​​​​​). See the Data availability section for the complete list of datasets.
    Description: Published
    Description: 2695–2710
    Description: OSA2: Evoluzione climatica: effetti e loro mitigazione
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 10
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    Antarctic Bedmap data: Findable, Accessible, Interoperable, and Reusable (FAIR) sharing of 60 years of ice bed, surface, and thickness data (2023)
    Copernicus Publications
    In:  EPIC3Earth System Science Data, Copernicus Publications, 15(7), pp. 2695-2710, ISSN: 1866-3508
    Details
    Publication Date: 2024-01-18
    Description: One of the key components of this research has been the mapping of Antarctic bed topography and ice thickness parameters that are crucial for modelling ice flow and hence for predicting future ice loss and the ensuing sea level rise. Supported by the Scientific Committee on Antarctic Research (SCAR), the Bedmap3 Action Group aims not only to produce new gridded maps of ice thickness and bed topography for the international scientific community, but also to standardize and make available all the geophysical survey data points used in producing the Bedmap gridded products. Here, we document the survey data used in the latest iteration, Bedmap3, incorporating and adding to all of the datasets previously used for Bedmap1 and Bedmap2, including ice bed, surface and thickness point data from all Antarctic geophysical campaigns since the 1950s. More specifically, we describe the processes used to standardize and make these and future surveys and gridded datasets accessible under the Findable, Accessible, Interoperable, and Reusable (FAIR) data principles. With the goals of making the gridding process reproducible and allowing scientists to re-use the data freely for their own analysis, we introduce the new SCAR Bedmap Data Portal (https://bedmap.scar.org, last access: 1 March 2023) created to provide unprecedented open access to these important datasets through a web-map interface. We believe that this data release will be a valuable asset to Antarctic research and will greatly extend the life cycle of the data held within it. Data are available from the UK Polar Data Centre: https://data.bas.ac.uk (last access: 5 May 2023). See the Data availability section for the complete list of datasets.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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