The Toxic Proteins of an Australian Jellyfish 'Chironex fleckeri',
DEFENCE STANDARDS LABS MARIBYRNONG (AUSTRALIA)
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There are at least two toxic proteins present in Chironex extracts. The larger, non-haemolytic, toxin appears to be more stable and may prove to be easier to isolate than the haemolysin, which rapidly loses activity under the mildest conditions. Since tentacle extracts also contain a dermatonecrotic agent which is antigenic, there is possibly a third toxic protein in the extracts, but dermatonecrosis has not been related to a specific protein fraction. The possibility that the active compounds are small molecules adsorbed strongly to proteins in the extracts cannot be totally excluded, but the present results make this very unlikely.