Table 2. Unique peptides of each myosin isoform identified from three porcine muscles

Myosin isoform	Sequences	Residues	Observed	Mr (expt)	Mr (calc)	Ion scorea)
Myosin-1	AGLLGLLEEMRDEK	771-784	787.82	1573.63	1573.81	56
	DLEEATLQHEATAATLR	1181-1197	935.38	1868.75	1868.99	94
	TLEDQLSELKTKEEEQQR	1255-1272	736.16	2205.46	2204.35	63
	QLDEKDTLVSQLSR	1294-1307	817.33	1632.64	1631.78	93
	LQNEVEDLMIDVER	1425-1438	852.39	1702.76	1702.88	67
Myosin-2	GQTVEQVTNAVGALAK	417-432	793.95	1585.88	1585.76	88
	NALAHALQSSR	1331-1341	584.76	1167.50	1167.28	67
	QAEEAEEQSNTNLSK	1885-1899	839.66	1677.30	1677.68	79
Myosin-4	TLAFLFAER	619-627	534.84	1067.66	1067.24	51
	TEELEEEIEAER	1117-1128	739.45	1476.88	1476.50	71
	TLEDQLSEVK		581.65	1161.28	1161.26	53
	LINELSAQK	1271-1279	509.07	1016.13	1015.16	62
	VRELENEVENEQKR	1821-1834	592.03	1773.07	1771.88	50
	LQDLVDKLQSK	1866-1876	644.84	1287.66	1286.47	70
Myosin-7	GTLEDQIIQANPALEAFGNAK	214-234	1101.15	2200.28	2200.40	95
	LLSNLFANYAGADTPVEK	616-633	962.46	1922.91	1923.13	103
	LQDLVDKLQLK	1864-1874	657.84	1313.66	1312.55	46