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URN: urn:nbn:de:kobv:517-opus-16759
URL: http://opus.kobv.de/ubp/volltexte/2008/1675/
Peter, Martin G.
Products of in vitro oxidation of N-acetyldopamine as possible components in the sclerotization of insect cuticle
Kurzfassung in Englisch
[1-14C]-N-Acetyldopamine (NADA) was oxidized in the presence of methyl [3-3H]-β-alanate with mushroom tyrosinase. The complex mixture of reaction products was partly resolved by chromatographic procedures and analyzed by spectroscopic methods. Methyl-β-alanate is incorporated to only a small extent into oxidation products of NADA which inter alia are presumed to be oligomeric hydroxyquinones. After oxidation of [1-14C, 2-3H]-NADA with preparations from tanning Manduca sexta pupal cuticle, N-acetylnoradrenalin was identified as one of the products. Binding of radioactivity to melanin-like material was also observed. These results suggest that oxidation products different from those formulated usually for the crosslinkages between protein amino groups and N-acetyldopaquinone are deposited in darkly brown coloured insect cuticles during sclerotization.
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Freie Schlagwörter (Englisch): |
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N-acetyldopamine , sclerotization , tyrosinase; o-quinones , tanning agents |
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Institut: |
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Institut für Chemie |
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DDC-Sachgruppe: |
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Biowissenschaften, Biologie |
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Dokumentart: |
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c Postprint |
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Schriftenreihe: |
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Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, ISSN 1866-8372 |
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Bandnummer: |
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paper 041 |
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Quelle: |
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Insect Biochemistry. - ISSN 0965-1748. - 10 (1980), 2, p. 221 - 227 |
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Sprache: |
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Englisch |
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Erstellungsjahr: |
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1980 |
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Publikationsdatum: |
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14.03.2008 |
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Bemerkung: |
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first published in: Insect Biochemistry - 10 (1980), 2 p. 221 - 227
ISSN: 0965-1748 doi: 10.1016/0020-1790(80)90077-3 |
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Lizenz: |
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Keine Nutzungslizenz vergeben - es gilt das deutsche Urheberrecht
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