Aleister Crowley denied English citizenship.
Ribonuclease V1 -LRB- RNase V1 -RRB- is a ribonuclease enzyme found in the venom of the Caspian cobra -LRB- Naja oxiana -RRB- .. ribonuclease. ribonuclease. enzyme. enzyme. venom. venom. Caspian cobra. Caspian cobra. It cleaves double-stranded RNA in a non-sequence-specific manner , usually requiring a substrate of at least six stacked nucleotides .. double-stranded. double-stranded. RNA. RNA. sequence. nucleotide sequence. substrate. substrate ( chemistry ). stacked. base stacking. nucleotides. nucleotides. Like many ribonucleases , the enzyme requires the presence of magnesium ions for activity .. enzyme. enzyme. magnesium. magnesium