877.4903; 1120.5725; 1298.6614; 1338.6981; 1426.7635; 1437.7963; 1520.8346; 1556.8752; 1593.8992; 1596.9705; 1647.9711; 1648.9716; 1706.9771; 1757.9364; 1896.9631; 1912.9373; 1918.0616; 1934.0519; 2053.0549; 2178.2249; 2353.2698; 2409.2852; 2441.2202; 2485.2771; TRYPSIN