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  • 1
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 12 (1973), S. 303-312 
    ISSN: 1432-0827
    Keywords: Bone ; Resorption ; Collagen ; Degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé De la poudre osseuse est décalcifiée et extraite à l'aide de l'E.D.T.A.0.5 M, puis d'un tampon de McIlvaine à pH 7.4. Trois fractions contenant de l'hydroxyproline ont été obtenues à partir de l'extrait de l'E.D.T.A., purifié par filtration sur gel. Ces 3 fractions sont considérées comme des produits de dégradation du collagène, étant donné leur analogie en composition en acides aminés. Le tampon de McIlvaine est fractionné par le sulfate d'ammonium. A partir de la fraction de saturation 0.3 M, après reconstitution avec l'ATP, un fragment de 700 Å de long est observé au microscope électronique. Une comparaison avec du collagène à segment espacé long semble indiquer que ce fragment est un produit de dégradation partielle de collagène et comprend environ un quart de la molécule collagénique de l'extrémité aminée terminale.
    Abstract: Zusammenfassung Knochenpulver wurde mit 0.5 M EDTA entkalkt und anschließen mit McIlvaine-Puffer bei pH 7,4 extrahiert. Aus dem durch Gel-Filtrations-Chromatographie gereinigten EDTA-Extrakt konnten 3 Hydroxyprolin enthaltende Fraktionen gewonnen werden. Diese wurden wegen ihrer kollagenähnlichen Aminosäurenstruktur für Abbauprodukte des Kollagens gehalten. Der McIlvaine-Puffer-Extrakt wurde mittels Ammoniumsulfat fraktioniert. Nach Rekonstitution mit ATP wurde aus der zu 0.3 gesättigten Fraktion ein Fragment in der Länge von 700 Å entnommen und unter dem Elektronenmikroskop geprüft. Vergleiche mit „segment-longspacing collagen” ließen vermuten, daß es sich bei diesem Fragment um teilweise abgebautes Kollagen handelte, das aus ungefähr einem Viertel des Kollagenmoleküls mit der endständigen Aminogruppe besteht.
    Notes: Abstract Bone powder was decalcified and extracted with 0.5 M EDTA and then with McIlvaine buffer at pH 7.4. From the EDTA extract, purified by gel filtration chromatography, three hydroxyproline-containing fractions were obtained which were considered to be degradation products of collagen because of their collagen-like amino-acid composition. The McIlvaine buffer extract was fractionated by ammonium sulfate. From the 0.3 saturation fraction, after reconstitution with ATP, a fragment 700 Å in length was observed with the electron microscope. Comparison with segment-long-spacing collagen suggested that this fragment was a partially-degraded product of collagen and consisted of approximately one quarter of the collagen molecule from the terminal-amino end.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Antonie van Leeuwenhoek 56 (1989), S. 263-271 
    ISSN: 1572-9699
    Keywords: Veillonella rodentium ; phage-receptor ; oligosaccharides ; glucosamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Veillonellophage N2 adsorbed to polysaccharides (PSs) on Veillonella rodentium ATCC 17743 cell wall, and the bacteriophage receptor contained only glucosamine. D(+)-glucosamine hydrochloride (Sigma) also adsorbed the veillonellophage N2. These results therefore indicate that the receptor to the veillonellophage N2 is cell wall PSs. The PSs of the host cells as receptor have been characterized. Glucosamine accounted for approximately 100% of the weight of the PSs. The PSs which were partially resolved by Sephadex G-75 chromatography comprised approximately four glucosamine units. Their primary structure was determined by 400 MHz n.m.r. spectroscopy. One- and two-dimensional 1H-nmr experiments showed the PS to be a branched polymer. Glucosamine linkage was detected in one of the branches.
    Type of Medium: Electronic Resource
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