Zusammenfassung
Die Beschreibung der Struktur sowie der physiologischen Funktion von Metallzentren in Enzymen oder Proteinen hat in der bioanorganischen Chemie immer einen breiten Raum eingenommen. Zwischen der allgemein feststellbaren Häufigkeit eines Elements im Organismus (vgl. Kap. 2.1) und der spezifischen Funktion, z.B. in einem Enzym, stehen jedoch komplexe, weil notwendigerweise selektive und kontrollierte Mechanismen für Aufnahme, Transport, Speicherung und gezielte Übergabe des Elements, etwa an das dafür vorgesehene Apoprotein, unter zeitlich und räumlich genau definierten physiologischen Bedingungen. Auf diesen schwer zugänglichen Aspekt der Zeit- und Ortsabhängigkeit bioanorganischer Reaktionen im konkreten Organismus hat vor allem Williams in mehreren Artikeln hingewiesen.
“Despite their fundamental role in processes of signaling, homeostasis, and cytotoxicity little detailed information is available on the mechanisms whereby metal ions enter eukaryotic cells. Exceptions include the uptake of Fe... and the permeation of Ca2+ through Ca channels.”
D.M. Templeton J. Biot Chem. 265 (1990) 21764
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© 2004 B. G. Teubner Verlag / GWV Fachverlage GmbH, Wiesbaden
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Kaim, W., Schwederski, B. (2004). Aufnahme, Transport und Speicherung eines essentiellen Elements: Das Beispiel Eisen. In: Bioanorganische Chemie. Teubner Studienbücher Chemie. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-92714-9_8
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