IndraLab
Statements
rlimsp
"Because tyrosine phosphorylation of Akt by Src was recently shown to be important in both the activation of Akt and its biological function (Chen ; Choudhury ; Bouchard ), we hypothesized that Src-mediated tyrosine phosphorylation of Akt was critical for its effects on migration."
"We also showed that phosphorylation of Tyr-315 in Akt induced by Src or EGF is dependent on the integrity of this proline-rich motif. Furthermore, the Akt mutant lacking this proline motif fails to block the transcription activity of Forkhead in 293 cells and poorly stimulates the proliferation of Madin-Darby canine kidney cells. Taken together, our data suggest that the interaction between the SH3 domain of Src family kinases and the proline-rich motif in the C-terminal regulatory region of Akt is required for tyrosine phosphorylation of Akt and its subsequent activation."
"Regulation of Akt/PKB Activation by Tyrosine PhosphorylationAs shown in Fig. 2 d, while mutation of Tyr340 has little effect on either tyrosine phosphorylation or kinase activity of Akt induced by Src527F, substitution of Tyr315 or Tyr326 with a phenylalanine, respectively, dramatically reduces both the tyrosine phosphorylation and kinase activity of Akt. The combination of these two mutations abolishes Src-induced tyrosine phosphorylation of Akt as well as its kinase activity."
"Regulation of Akt/PKB Activation by Tyrosine PhosphorylationAs shown in Fig. 2 d, while mutation of Tyr340 has little effect on either tyrosine phosphorylation or kinase activity of Akt induced by Src527F, substitution of Tyr315 or Tyr326 with a phenylalanine, respectively, dramatically reduces both the tyrosine phosphorylation and kinase activity of Akt. The combination of these two mutations abolishes Src-induced tyrosine phosphorylation of Akt as well as its kinase activity."
reach
"As phosphorylation of Syk and Src is known to increase phosphorylation of IjBa and AKT (Lee et al. 2009; Byeon et al. 2012 ), we investigated the levels of p-Syk and p-Src by immunoblotting at 2, 3, and 5 min after treatment with Tf-EE.We found that Tf-EE only suppressed levels of p-Src at 3 and 5 min after LPS treatment (Figure 3(B) )."
rlimsp
"Our data indicated that while Akt activity modulation correlated with changes in the Ser9/21 of GSK-3, changes in cSrc activity modulation using specific constitutively active and catalytically inactive mutants correlated with changes in the phosphorylation of Y216GSK-3 and Ser33/37/Thr41βcatenin, a known substrate of GSK-3, thus indicating that Src is responsible for Y216GSK-3 phosphorylation and its activation (Figure 4A and B)."