GAGE4 GI:4503883 G antigen 4 1 mswrgrstyy wprprryvqp pemigpmrpe qfsdevepat peegepatqr 50 51 qdpaaaqege degasagqgp kpeadsqeqg hpqtgceced gpdgqemdpp 100 101 npeevktpee gekqsqc