Selective Enzymatic Removal of Protecting Groups from Phosphopeptides: Chemoenzymatic Synthesis of a Characteristic Phosphopeptide Fragment of the Raf-1 Kinase
Chemoenzymatic Synthesis of a Characteristic Phosphopeptide Fragment of the Raf-1 Kinase
摘要:
Base-labile biologically relevant phosphopeptides can advantageously be synthesized under very mild conditions (pH 7, 37 degrees C) by employing the heptyl (Hep) ester as enzyme-labile protecting group. This method was used in the construction of a characteristic, selectively phosphorylated hydroxyamino acid fragment of the Raf-l kinase, an important constituent of the Ras pathway of signal transduction. (C) 1997 Elsevier Science Ltd.