The Oxus cobra contains what kind of ions for their venom to be active?
Caspian cobra The Caspian cobra ("Naja oxiana"), also called the Central Asian cobra, Oxus cobra or Russian cobra, a member of the family Elapidae found in Central Asia.
Calciseptine Calciseptine (CaS) is a natural neurotoxin isolated from the black mamba "Dendroaspis p. polylepis" venom. This toxin consists of 60 amino acids with four disulfide bonds. Calciseptine specifically blocks L-type calcium channels, but not other voltage-dependent Ca channels such as N-type and T-type channels.