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. Author manuscript; available in PMC: 2013 Apr 8.
Published in final edited form as: Peptides. 2010 Nov 30;32(2):306–316. doi: 10.1016/j.peptides.2010.11.014

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[P5,7,13] 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[O2,8] 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[P5,7,13] 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