idw – Informationsdienst Wissenschaft
Nachrichten, Termine, Experten
Nachrichten, Termine, Experten
Graphik einer Nierenzelle mit Wasserkanälen (Aquaporin-2, AQP2) in der Zelle (linke Abbildung) und mit Aquaporin-2 in der Plasmamembran (rechte Abbildung, oben). Die Wasserkanäle werden zum Beispiel bei Durst durch das Hormon AVP über eine Signalkaskade aus dem Zellinneren in die Plasmamembran verlagert. Überschüssiges Wasser leitet die Zelle über andere Wasserkanäle (AQP3 und 4, Abbildung rechts, rechte Seite der Zelle) in den Blutkreislauf und das Gewebe ab.
(Graphik: Enno Klußmann/ Copyright: MDC)
(1629 KB, 6627 x 3998 pixels)
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