Venom A-Z U is for U-theraphotoxin

Venom A-Z U is for U-theraphotoxin – literally ‘Unknown Theraphotoxin’, peptides with unspecified activity that are found within the venom of theraphosids.  There are thousands of examples of these across the entire spectrum of tarantula species, and they continue to be investigated, representing a veritable scientific treasure trove of potential new useful compounds which have yet to be classified or described.  An example of a U-theraphotoxin can be found in the venom of Lasiodora parahybana (Salmon Pink Birdeater), that contains a theraphotoxin that is toxic to mice but not to invertebrates.