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- _5 value "Together, the results suggest that 14-3-3 binds both PKC-zeta (at phospho-Ser-186) and Raf-1 in a ternary complex. Phosphorylation of 14-3-3beta by PKC-zeta negatively regulated their physical association. 14-3-3beta with its putative PKC-zeta phosphorylation sites mutated enhanced co-precipitation between PKC-zeta and Raf-1, suggesting that phosphorylation of 14-3-3 by PKC-zeta weakens the complex in vivo. We conclude that 14-3-3 facilitates coupling of PKC-zeta to Raf-1 in an isotype-specific and phosphorylation-dependent manner. We suggest that 14-3-3 is a transient mediator of Raf-1 phosphorylation and activation by PKC-zeta." provenance.
- _5 wasQuotedFrom 10620507 provenance.