A 70 yo man comes to doctor with fatigue and upper abdominal pain. Also reports recent loss ofappetitea nd occasional vomiting. Family history is positive for gastric adenocarcinom and infiltrating lobular carcinioma fo the breast. 1. The mutated gene responsible for these conditions encodes a component of what structure?

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1. A 70 yo man comes to doctor with fatigue and upper abdominal pain. Also reports recent loss ofappetitea nd occasional vomiting. Family history is positive for gastric adenocarcinom and infiltrating lobular carcinioma fo the breast. 1. The mutated gene responsible for these conditions encodes a component of what structure?