Phospholipase Cγ activates Ras on the Golgi apparatus by means of RasGRP1

  title={Phospholipase Cγ activates Ras on the Golgi apparatus by means of RasGRP1},
  author={Trever G Bivona and Ignac{\'i}o P{\'e}rez de Castro and Ian Ahearn and Theresa M. Grana and Vi K. Chiu and Peter J. Lockyer and Peter J. Cullen and Angel Pellicer and Adrienne D. Cox and Mark R Philips},
Ras proteins regulate cellular growth and differentiation, and are mutated in 30% of cancers. We have shown recently that Ras is activated on and transmits signals from the Golgi apparatus as well as the plasma membrane but the mechanism of compartmentalized signalling was not determined. Here we show that, in response to Src-dependent activation of phospholipase Cγ1, the Ras guanine nucleotide exchange factor RasGRP1 translocated to the Golgi where it activated Ras. Whereas Ca2+ positively… CONTINUE READING


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