It is an inhibitor of protein-kinases and cell membrane lytic factor from the venom of the Honeybee, Apis mellifera.

The NH2 terminal part of the molecule is predominantly hydrophobic and the C terminal part is hydrophilic and strongly basic.

It is an inhibitor of
- protein kinase C,
- Ca²⁺/calmodulin-dependent protein kinase II,
- myosin light chain kinase
- and Na+/K⁺-ATPase (synaptosomal membrane),
with an IC₅₀ of 1-4 µM.
It is also a cell membrane lytic factor.

Store preferably at -20 °C;

Solution for use: 100 μM. It can be then freezed and thawed.

For research use only — not intended for food, diagnostic or therapeutic use