TABLE 2.

Tandem mass spectrometry of BT1583

M/H+ b series	ΔM	Possible amino acid residue	M/H+ y series	ΔM	Possible amino acid residue	Compiled (N to C)
198.10		(CH3)2-Bmt (?)				(CH3)2-Bmt (?)
311.16	113.06	L/I	1386.73	113.12	L/I	L/I
425.21	114.05	O	1273.61	114.04	O	O
538.28	113.07	L/I	1159.57	113.05	L/I	L/I
637.32	99.04	V	1046.52	198.08	V+V	V
						V
864.42	227.10	V+K	848.44	128.07	K	K
963.46	99.04	V	720.37	99.04	V	V
1076.52	113.06	L/I	621.33			L/I
1204.58	128.06	K				K
1367.65	163.07	Y				Y
1480.81	113.16	L/I				L/I
1583.87	103.06	Val-CH2OH				Val-CH2OH