Table 2.

Conus ermineus conotoxin distribution by MALDI-TOF mass spectrometry. X indicates the presence of a particular mass in specific specimens. Known C. ermineus conotoxin biomarkers are indicated. O = hydroxyproline. [O⁸] and [O²²] indicate hydroxylation at the residue indicated in the bracket. αA-EIVA[P^5,7,13] has the same sequence as αA-EIVA; however, its Pro residues at positions 5, 7 and 13 are not hydroxylated.

Conotoxin	m/z	Specimen 1	Specimen 2	Specimen 3	Specimen 4	Specimen 5	Specimen 6	Specimen 7	Specimen 8
	1014			X			X
	1028				X
	1099				X
	1115				X
	1430	X							X
	1449						X
	1581						X
	1590						X
	1605	X					X
EIIC	1644	X	X	X	X	X	X	X	X
	1663	X					X
	1695						X		X
	1711							X
	1726							X
EIIB	1740	X	X	X	X	X	X	X	X
EIIB[O²]	1756	X	X	X	X	X	X	X	X
	1757	X					X		X
EIIB[O^2,8]	1772	X	X	X	X	X	X	X	X
	1773	X
EIB	1775	X	X	X	X	X	X	X	X
	1776		X
EIB[O⁸]	1791	X	X	X	X	X	X	X	X
	1795				X	X
	1806						X		X
	1824						X
	1858				X
	1928			X				X
EIC	1942	X	X	X	X	X	X	X	X
	1949						X
	1959			X				X
	1966							X
	1974						X
	2047							X
	2062			X
	2078			X				X
EI	2092	X	X	X	X	X	X	X
	2109			X				X
	2626			X				X
	2645			X				X
	2738							X
EVIIA	2764	X	X	X	X	X	X	X
EVII[O²²]	2780	X	X	X	X	X	X	X	X
	3024							X
	3035							X
	3040							X
	3049							X
αA-EIVA[P^5,7,13]	3065							X
	3070							X
	3081			X				X
	3086							X
αA-EIVA	3095
αA-EIVB	3099			X				X
	3101			X				X
	3114							X
δ-EVIA	3288
EIIIA	3511	X	X	X			X	X
	3528	X		X	X		X	X	X
	3545							X	X
	3560		X				X		X
	3577							X
	3592							X