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Description
English: (A) Activation of protein kinase A of higher eucaryotes via cAMP. The freed C-subunits are phosphorylating various substrate proteins at specfic serine or threonine sites, respectively. Hereby ATP is converted to ADP. (B) One of the substrates of PKA is the phosphodiesterase PDE. After phosphorylation by PKA, the activated enzyme catalyzes the hydrolysis of cAMP to AMP. Hence the activity of PKA is reduced or terminated (feedback control)
Deutsch: (A): Aktivierung der Proteinkinase A höhere Eukaryoten. Genereller Aktivierungsmechanismus durch cAMP. Die freien C-Untereinheiten phosporylieren eine Reihe von Substraten an spezifischen Serin- bzw. Threoninresten unter Verbrauch von ATP. (B) Ein Substrat der PKA ist die Phosphodiesterase (PDE). Nach Phosphorylierung liegt diese in einem aktiven Zustand vor. Infolgedessen katalysiert die PDE die Hydroylse von cAMP zu AMP, so dass die Aktivität der PKA reduziert wird oder erlischt (feedback control).
Date (UTC)
Source File:Proteinkinase 1.svg, de:File:PKARII.png
Author Yikrazuul; chris

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Date/TimeThumbnailDimensionsUserComment
current12:57, 28 March 2010Thumbnail for version as of 12:57, 28 March 20101,020 × 827 (90 KB)YikrazuulFehler beseitigt und verbessert
00:48, 3 December 2009Thumbnail for version as of 00:48, 3 December 20091,052 × 744 (51 KB)Chrklmissing overlap
12:40, 2 December 2009Thumbnail for version as of 12:40, 2 December 20091,052 × 744 (51 KB)Chrkl{{Information |Description={{mld |de=Aktivierung und Aktivierbarkeit von Proteinkinase A: Genereller Aktivierungsmechanismus (A) und Autophosphorylierung (Inaktivierung) der katalytischen Untereinheiten in Gegenwart regulatorischer Untereinheiten vom RII-

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