TABLE 1

Partial N-terminal sequences and molecular masses of the subunits of cannitoxin and taipoxin

Species
Toxin
Subunit
Molecular Mass
N-Terminal Sequence
Da
O. s. scutellatus Taipoxin α 13,750a NLLQF GFMIR CANRR SPPVW
O. s. canni Cannitoxin α 13,824 NLLQF GYMIR CANGR SRPVW*
O. s. scutellatus Taipoxin γ 18,354a SELPQ PSIDF EQFSN MIQCT IPCGS ECIAY
O. s. canni Cannitoxin γ 17,762 SEIPQ PSLDF EQFSN MIQCT IPPGE E* C* LAYb
O. s. scutellatus Taipoxin β1 13,457a NLVQF GKMIE CAIRN RRPAL DFMNY GCYCG KGGSG TPVDD
O. s. canni Cannitoxin β2 13,242 NLVQF GFMIE CAIRN RQPAL DFMNY GCYCG TVGRG TPVDD
O. s. canni
Cannitoxin
β1
13,276
NLVQF GKMIE

  • O. s. scutellatus, O. scutellatus scutellatus; O. s. canni, O. scutellatus canni.

  • ↵* Residue predicted on sequence homology.

  • ↵ a Data from Fohlman et al. (1976).

  • ↵ b Underlined letters indicate low level sequence (within signal to noise).