SRM, ID (SRM, SPS1, SRML1, Spermidine synthase, Putrescine aminopropyltransferase)

May be stored at 4 degree C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degree C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.