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  • glycoprotein  (3)
  • DSC  (2)
  • Ras-binding domain  (2)
  • Springer  (7)
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  • Springer  (7)
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  • 1
    Electronic Resource
    Electronic Resource
    Glycosylation of glycoprotein 55 encoded by the anaemia-inducing strain of Friend spleen focus-forming virus (1994)
    Springer
    Glycoconjugate journal 11 (1994), S. 133-139 
    Details
    ISSN: 1573-4986
    Keywords: Friend spleen focus-forming virus ; glycoprotein ; oligosaccharide processing ; SFFV
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Normal rat kidney cells, non-productively infected with the anaemia-inducing variant of Friend spleen focus-forming virus (F-SFFVA), were metabolically labelled with [2-3H]mannose. The primary translation product of the viral envelope gene (env), representing a glycoprotein with an apparent molecularM r of 55 000 (gp55), was isolated from cell lysates by immunoaffinity chromatography and purified by preparative SDS/PAGE. Radiolabelled oligosaccharides, released from tryptic glycopeptides by treatment with endo-β-N-acetylglucosaminidase H, were characterized chromatographically, by enzymic digestion and by acetolysis. The results revealed that F-SFFVA gp55 obtained from this source carried predominantly oligomannose type sugar chains with five to nine mannoses. As a characteristic feature, glycans with seven to nine mannoses contained, in part, an additional glucose residue. Although the amount of glucosylated species found was higher in F-SFFVA gp55 (about 25% of total endo-H-sensitive oligosaccharides) than in gp55 of the corresponding polycythaemia-inducing variant (F-SFFVP, 16.3%), the overall glycosylation pattern of the F-SFFVA env product closely resembled that of F-SFFVP gp55 [Strubeet al. (1988)J Biol Chem 263:3762–71]. Hence, our results demonstrate that the different intracellular processing and transport of the primary F-SFFVA env product cannot be attributed to aberrant trimming of its oligomannose type glycans.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00731153
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  • 2
    Electronic Resource
    Electronic Resource
    Host-cell-specific glycosylation of HIV-2 envelope glycoprotein (1997)
    Springer
    Glycoconjugate journal 14 (1997), S. 785-793 
    Details
    ISSN: 1573-4986
    Keywords: glycoprotein ; glycosylation ; gp120 ; HIV ; MALDI-TOF-MS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Neutral complex-type N-glycans of the envelope glycoprotein 120 of HIV-2, propagated in different host cells, display cell-type specific variations. In order to identify typical structural elements, glycans were analysed by gel filtration, by enzymic sequencing and, in part, by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. The characteristic substituents of di- tri- and tetraantennary carbohydrate units thus observed include N-acetyllactosamine repeats, bisecting N-acetylglucosamine and fucose linked to the chitobiose core as well as to N-acetyllactosamine antennae. Each glycoprotein preparation displayed a characteristic set of glycoforms. Abbreviations: endo H, endo-β-N-acetylglucosaminidase H; E-PHA, Phaseolus vulgaris agglutinin E4; GlcNAcOH, N-acetyl-glucosaminitol; gp120/HUT78(MOLT4/Mφ/PBL/U937), external envelope glycoprotein 120 of HIV-2, strain D194, propagated in HUT78 (MOLT4, Mφ, PBL, U937) cells; gu, glucose units; HPAEC, high-pH anion-exchange chromatography; MALDI-TOF-MS, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry; Mφ, human monocytes/macrophages; PBL, human peripheral blood lymphocytes; PNGase F, peptide-N4-(N-acetyl-β-glucosaminyl)asparagine amidase F
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018577619036
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  • 3
    Electronic Resource
    Electronic Resource
    The limit of detection in differential scanning calorimetry (1992)
    Springer
    Journal of thermal analysis and calorimetry 38 (1992), S. 277-287 
    Details
    ISSN: 1572-8943
    Keywords: DSC ; limit of detection ; polymorphic transitions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Anhand von sehr kleinen Signalen von spontanen polymorphen übergängen bei CsCl, K2Cr2O7 und Na2SO4 wird ein Verfahren zur Bestimmung der Nachweisgrenze von DSC-Geräten beschrieben. Es wird gezeigt, wie derartige Signale gut aufgelöst in DSC-Diagrammen von Pulverproben erhalten werden können. Um sie vom Rauschen der Basislinie zu unterscheiden, sollten sie eine Höhe von mindestens dem Doppelten der Basislinienbreite aufweisen. Für das angewendete Gerät beträgt die entsprechende geringste Wärmemenge, d.h. die Nachweisgrenze 0.1 mJ.
    Notes: Abstract A procedure is described to determine the limit of detection of DSC instruments by using tiny signals from spontaneous polymorphic transitions of CsCl, K2Cr2O7 and Na2SO4. It is shown how such signals can be found well-resolved in DSC diagrams of powder samples. To distinguish them from the baseline noise they should exhibit a height at least twice that of the baseline width. For the instrument employed the corresponding smallest amount of heat, i.e., the limit of detection, was found to be 0.1 mJ.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01915492
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  • 4
    Electronic Resource
    Electronic Resource
    Thermoanalytische Charakterisierung Strahlengehärteter Polymerfilme (1998)
    Springer
    Journal of thermal analysis and calorimetry 52 (1998), S. 145-155 
    Details
    ISSN: 1572-8943
    Keywords: acrylates ; DMA ; DSC ; epoxides ; radiation curing ; structure-property relationship ; TG ; thermal analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Thermo-oxidative and thermo-mechanical stabilities of radiation-cured acrylates and epoxides were examined by TG, DMA and DSC. The polymeric trifunctional acrylates PETIA, TMPTA and THEIC displayed the highest temperatures of onset of degradation. The high crosslinking density of the films resulted in an almost temperature-independent complex E-modulus, as measured by DMA. With increasing degree of ethoxylation or propoxylation of the monomers, decreases in thermal stability and strength were found. For difunctional polymeric acrylates and epoxides, the glass transition temperature was measured. The average degree of curing of UV-cured epoxy films can be determined from the temperature of the maximum in the loss modulus (E″max.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010122525663
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  • 5
    Electronic Resource
    Electronic Resource
    Letter to the Editor: Sequence-specific resonance assignment of the Ras-binding domain of AF6 (2000)
    Springer
    Journal of biomolecular NMR 18 (2000), S. 73-74 
    Details
    ISSN: 1573-5001
    Keywords: AF6 ; NMR assignment ; Ras-binding domain
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008373529242
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  • 6
    Electronic Resource
    Electronic Resource
    Letter to the Editor: Sequential NMR assignment of the RAS-binding domain of Byr2 (2000)
    Springer
    Journal of biomolecular NMR 16 (2000), S. 355-356 
    Details
    ISSN: 1573-5001
    Keywords: Byr2 ; Ras-binding domain ; sequential assignment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008335420475
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  • 7
    Electronic Resource
    Electronic Resource
    Glycosylation of the thrombin-like serine protease ancrod fromAgkistrodon rhodostoma venom. Oligosaccharide substitution pattern at eachN-glycosylation site (1993)
    Springer
    Glycoconjugate journal 10 (1993), S. 240-246 
    Details
    ISSN: 1573-4986
    Keywords: glycoprotein ; glycopeptides ; N-linked oligosaccharides ; snake venom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract In a previous study, we determined the structures of the glycans present in ancrod, a thrombin-like serine protease from the venom of the Malayan pit viperAgkistrodon rhodostoma (Pfeifferet al. (1992)Eur J Biochem 205:961–78). In order to allocate the various carbohydrate chains to distinctN-glycosylation sites of the molecule, we have now isolated individual glycopeptides. Peptide moieties were identified after deglycosylation with peptide-N 4-(N-acetyl-β-glucosaminyl)asparagine amidase F by amino acid analysis and sequencing. Liberated oligosaccharides were assigned to the previously deduced carbohydrate structures by high performance liquid chromatography. Although only quantitative differences were observed, the results indicate that each glycosylation site of ancrod carries its characteristic oligosaccharide pattern. Furthermore, all potential sites were shown to be substituted by carbohydrates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00702206
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