The Oxus cobra contains what kind of ions for their venom to be active?
Ribonuclease V1 Ribonuclease V1 (RNase V1) is a ribonuclease enzyme found in the venom of the Caspian cobra ("Naja oxiana"). It cleaves double-stranded RNA in a non-sequence-specific manner, usually requiring a substrate of at least six stacked nucleotides. Like many ribonucleases, the enzyme requires the presence of magnesium ions for activity.
Bufotenidine Bufotenidine, also known as 5-hydroxy-"N","N","N"-trimethyltryptammonium (5-HTQ), is a toxin related to bufotenin, serotonin, and other tryptamines which is found in the venom of a variety of toads. It acts as a selective 5-HT receptor agonist, and has been used in scientific research to study the function of the 5-HT receptor, though this use has been limited by the fact that, as a quaternary amine, it is unable to readily cross the blood-brain-barrier.