Don't know the answer but this article might help.
You can get a copy from sciencedirect or the local university.
Purification and molecular cloning of SE-cephalotoxin, a novel
proteinaceous toxin from the posterior salivary gland
of cuttlefish Sepia esculenta
Atsushi Ueda a, Hiroshi Nagai b, Masami Ishida b, Yuji Nagashima a, Kazuo Shiomi a,*
a Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Konan-4, Minato-ku, Tokyo 108-8477, Japan
b Department of Ocean Sciences, Tokyo University of Marine Science and Technology, Konan-4, Minato-ku, Tokyo 108-8477, Japan
Cephalopods contain toxins in their salivary glands, presumably to paralyze prey animals
such as crabs and bivalves. Proteinaceous toxins (called cephalotoxins) with crab lethality
have previously been purified from three species of octopodiform cephalopods (octopuses)
but their detailed properties and primary structures have remained unknown. In this
study, salivary glands of six species of decapodiform cephalopods were newly found to be
toxic; three species of cuttlefish were lethal only to crabs and three species of squid to both
mice and crabs. A proteinaceous toxin (named SE-cephalotoxin) in the salivary gland of
cuttlefish Sepia esculenta was soluble only in high-salt solvents.