Table 1.

Observed and predicted ion masses of GST-Src-SH2, GST-Src-SH2 + cortactin C112 and GST-Src-SH2 + cortactin C246 tryptic peptides

GST-Src SH2						GST-Src SH2 + C112 Peptide (HCSQV)						GST-Src SH2 + C246 Peptide (CALG)
Ion	Exp. Da	Obs. Da	Ion	Exp. Da	Obs. Da	Ion	Exp. da	Obs. Da	Ion	Exp. Da	Obs. Da	Ion	Exp. Da	Obs. Da	Ion	Exp. Da	Obs. Da
b1	57.02	----	y1	146.11	147.11	b1	57.02	----	y1	146.11	----	b1	57.02	----	y1	146.11	147.11
b2	128.06	129.07	y2	217.14	218.15	b2	128.06	129.07	y2	217.14	218.15	b2	128.06	129.07	y2	217.14	218.15
b3	291.12	292.13	y3	331.19	332.19	b3	291.12	292.13	y3	331.19	332.19	b3	291.12	292.13	y3	331.19	332.19
b4	394.13	395.14	y4	446.21	447.22	b4	965.36	965.36*	y4	446.21	447.22	b4	755.29	755.28*	y4	446.21	447.21
b5	507.22	508.22	y5	593.28	594.29	b5	1078.45	1078.44*	y5	593.28	594.29	b5	868.37	868.36*	y5	593.28	594.28
b6	594.25	----	y6	708.31	709.32	b6	1165.47	1165.48*	y6	708.31	709.32	b6	955.40	955.38*	y6	708.31	709.31
b7	693.32	694.32	y7	795.34	796.35	b7	1264.55	1264.55*	y7	795.34	796.35	b7	1054.47	1054.46*	y7	795.34	796.34
b8	780.35	781.36	y8	894.41	895.42	b8	1351.58	1351.58*	y8	894.41	895.42	b8	1141.50	1141.50*	y8	894.41	895.40
b9	895.38	----	y9	981.44	982.45	b9	1466.61	1466.60*	y9	981.44	982.45	b9	1256.53	1256.51*	y9	981.44	982.44
b10	1042.44	1043.45	y10	1094.52	1095.53	b10	1613.67	1613.67*	y10	1094.52	1095.53	b10	1403.60	1403.58*	y10	1094.52	1095.52
b11	1157.47	1158.48	y11	1197.53	1198.54	b11	1728.70	1728.70*	y11	1768.76	1768.76*	b11	1518.62	1518.63*	y11	1558.69	1558.68*
b12	1271.51	1272.52	y12	1360.60	1361.60	b12	1842.74	----	y12	1931.83	1931.83*	b12	1632.67	1632.66*	y12	1721.75	----
b13	1342.55	1343.56	y13	1431.63	1432.64	b13	1913.78	1913.78*	y13	2002.86	----	b13	1703.71	1703.70*	y13	1792.79	----
b14	1470.65	----	y14	1488.66	----	b14	2041.88	----	y14	2059.89	----	b14	1831.80	----	y14	1849.81	----

Non-bold numerals indicate expected ion masses; bold numerals indicate observed ion masses; the asterisks indicate the peptide modified masses.