1. Moro Gulf earthquake (1976)
2. Luzon earthquake (1990)
3. Casiguran earthquake (1968)
4. Mindoro earthquake (1994)
5. Bohol earthquake (2013)
The unique - tertiary structure of the enzyme is what makes it unique - this in combination with the receptors at the active site confer specificity.
True, this is because they are are poisonous and only Myuchelys Latisternum, the saw-shelled turtle can prey on them.