What are the best storage conditions for birA?
The birA enzyme arrives frozen. If you are not going to use it immediately, then store it at -80°C. Once the enzyme has been thawed, it should then be stored at 4°C. We do not recommend repeatedly re-freezing the enzyme as there is a 5-10% loss of activity during each freeze/thaw cycle. At 4°C the enzyme is stable for several months. For long-term storage, the enzyme can be safely re-frozen by dropping into liquid nitrogen before storing at -80°C.
