TABLE 3.

Assignments of all iturin mass peaks obtained by MALDI-TOF mass spectrometry of whole cells of B. subtilis C-1, the culture filtrate, and the lipopeptide fraction^a

Mass peak (m/z)	Assignment
1070.6	C16 iturin, [M+H]+
1084.6	C17 iturin, [M+H]+
1098.6	C18 iturin, [M+H]+
1112.6	C19 iturin, [M+H]+
1092.6	C16 iturin, [M+Na]+
1106.6b	C17 iturin, [M+Na]+
1120.6b	C18 iturin, [M+Na]+
1134.6	C19 iturin, [M+Na]+
1108.6	C16 iturin, [M+K]+
1122.6b	C17 iturin, [M+K]+
1136.6b	C18 iturin, [M+K]+
1150.6	C19 iturin, [M+K]+

^aThe mass data represent monoisotopic mass numbers.

^bMass numbers of the main isoforms.