Peptide 106.05 163.072 solution: 264.12 294.168 395.216 420.221 452.237 557.28 H RTG S 100 200 300 400 500 600 700 800 Mass / charge Peptide solution: 90.0555 RYGNA 320.172 377.194 424.183 491.237 580.284 100 200 300 400 500 600 700 800 Mass / charge Peptide 6 118.087 189.088 , ^ 255.146 solution: 375.167 _ 441.225 STWHV 512.226 542.273 629.305 100 200 300 400 500 600 700 800 Mass / charge