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  • 1
    Digitale Medien
    Digitale Medien
    Kinetics of inhibition of alkaline phosphatase from green crab (Scylla serrata) by N-bromosuccinimide (1996)
    Springer
    The protein journal 15 (1996), S. 345-350 
    Details
    ISSN: 1573-4943
    Schlagwort(e): Alkaline phosphatase ; inhibition ; chemical modification ; N-bromosuccinimide
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The inactivation of alkaline phosphatase from green crab (Scylla serrata) by N-bromosuccinimide has been studied using the kinetic method of the substrate reaction during modification of enzyme activity previously described by Tsou [(1988),Adv. Enzymol. Related Areas Mol. Biol. 61, 381–436]. The results show that inactivation of the enzyme is a slow, reversible reaction. The microscopic rate constants for the reaction of the inactivator with free enzyme and the enzyme-substrate complex were determined. Comparison of these rate constants indicates that the presence of substrate offers marked protection of this enzyme against inactivation by N-bromosuccinimide. The above results suggest that the tryptophan residue is essential for activity and is situated at the active site of the enzyme.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01886860
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  • 2
    Digitale Medien
    Digitale Medien
    Intrinsic specificity of Ca2+-protein binding sites (1993)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 28 (1993), S. 1596-1601 
    Details
    ISSN: 0030-493X
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The gas-phase chemistry of anionic [M + Cat2+ - 3H]- complexes between Ca2+-specific peptides and the alkaline earth metal ions Mg2+, Ca2+ and Ba2+ is reported. The metal ion complexes were studied using fast atom bombardment, collision-induced decomposition (CID) and molecular mechanical calculations. The CID reactions and molecular mechanical calculations revealed that the Ca2+-peptide complexes are bound differently to the Mg2+- and Ba2+-peptide complexes and that the intrinsic (gas-phase) chemistry is reflected by known aqueousphase chemistry.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/oms.1210281235
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Oxygenation of diphenyl methanol catalyzed by a platinum complex of magnesium oxide-supported polytitazane (1996)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 7 (1996), S. 726-728 
    Details
    ISSN: 1042-7147
    Schlagwort(e): diphenyl methanol ; oxygenation ; polytitazane-platinum complex ; Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Magnesium oxide-supported polytitazane-platinum complex has been found to catalyze the oxygenation of diphenyl methanol with high yield and high selectivity at 140°C and 1 atm O2. The N/Pt molar ratio, temperature and solvent had great influence on the activity of the catalyst.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Oxidation of methanol catalyzed by silica-supported polystannazane-copper complex (1996)
    New York, NY : Wiley-Blackwell
    Polymers for Advanced Technologies 7 (1996), S. 73-75 
    Details
    ISSN: 1042-7147
    Schlagwort(e): oxidation ; methanol ; polymer-copper complex ; Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Silica-supported polystannazane-copper complex has been prepared and used as a catalyst for the oxidation of methanol. The results showed that the catalyst could catalyze the oxidation of methanol to formaldehyde at a high yield and selectivity at 30°C and under 1 atm mild conditions. The N/Cu mole ratio in the complex, temperature and the amount of NaOH additive had much influence on the catalytic activity. The complex was stable during the reaction and could be used repeatedly.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
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