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  • Polymer and Materials Science  (2)
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Materialart
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  • 1
    Digitale Medien
    Digitale Medien
    Deamination of protein lysyl ε-amino groups by peroxidase in vitro (1977)
    New York : Wiley-Blackwell
    Biopolymers 16 (1977), S. 1299-1306 
    Details
    ISSN: 0006-3525
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Peroxidase, catechol, and hydrogen peroxide were shown to react with proteins, causing a decrease in lysine detectable after acid hydrolysis. The loss of lysine did not occur in the presence of benzenesulfinic acid which suggested that the quinones formed by peroxidase had oxidized some lysyl residues to lysyl aldehyde that formed a cyclic ninhydrin negative Shiff's base. When peroxidase treated protein was oxidized with performic acid prior to hydrolysis a new ninhydrin positive compound was found, which was shown by cochromatography and mass spectroscopy to be α-aminoadipic acid. The α-aminoadipic acid recovered accounted for (20-40)% of the lysine lost.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/bip.1977.360160610
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  • 2
    Digitale Medien
    Digitale Medien
    Cross linking of proteins in vitro by peroxidase (1977)
    New York : Wiley-Blackwell
    Biopolymers 16 (1977), S. 1307-1318 
    Details
    ISSN: 0006-3525
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The enzyme peroxidase, a substrate (hydrogen donor), and hydrogen peroxide aggregated and polymerized soluble proteins included in the reaction mixture. Gel filtration and acrylamide disk gel electrophoresis revealed newly formed dimers, trimers, and higher protein polymers. Some of the protein polymers withstood the denaturing conditions of dodecyl sulfate disk gel electrophoresis; thus the formation of some covalent cross links was indicated. It is suggested that peroxidase catalyzes the oxidation of hydrogen donors to form free radicals or quinones, which subsequently interact with, cross link, and alter the soluble proteins.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/bip.1977.360160611
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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