The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Pair-rule protein that regulates embryonic segmentation and adult bristle patterning. Transcriptional repressor of genes that require a bHLH protein for their transcription (e.g. the Fushi tarazu gene).