SRC phosphorylates PTK2
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SRC phosphorylates PTK2 (FAK1) at tyrosine residues Y576 and Y577 in the activation loop of PTK2. Phosphorylation of PTK2 at Y576 and Y577 is required for the full catalytic activity of PTK2 (Calelb et al. 1995, Lietha et al. 2007) and is facilitated by MET-mediated phosphorylation of PTK2 at Y194. MET is able to phosphorylate PTK2 at Y576 and Y577 in vitro, in the absence of SRC (Chen et al. 2011).
SRC在PTK2(FAK1)的激活环中于酪氨酸残基Y576和Y577处进行磷酸化。PTK2在Y576和Y577处的磷酸化对于其催化活性的完全发挥至关重要(Calelb等,1995年,Lietha等,2007年),并且可通过MET介导的PTK2在Y194处的磷酸化过程得到促进。在体外实验中,MET能够在缺乏SRC的情况下对PTK2在Y576和Y577处进行磷酸化(Chen等,2011年)。
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