Recombinant Escherichia coli Periplasmic serine endoprotease DegP(degP)

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 -20C/-80C. The shelf life of lyophilized form is 12 months at -20C/-80C.

DegP acts as a chaperone at low tperatures but switches to a peptidase (heat shock protein) at higher tperatures. It degrades transiently denatured and unfolded proteins which accumulate in the periplasm following heat shock or other stress conditions. DegP is efficient with Val-Xaa and Ile-Xaa peptide bonds, suggesting a preference for beta-branched side chain amino acids. Only unfolded proteins devoid of disulfide bonds appear capable of being cleaved, thereby preventing non-specific proteolysis of folded proteins. Its proteolytic activity is essential for the survival of cells at elevated tperatures. It can degrade IciA, ada, casein, globin and PapA. DegP shares specificity with DegQ. DegP is also involved in the biogenesis of partially folded outer-mbrane proteins (OMP).

Repeated freezing and thawing is not recommended. Store working aliquots at 4C for up to one week.

Cell inner membrane, Peripheral membrane protein, Cytoplasmic side

Full Length of Mature Protein

Tris-based buffer, 50% glycerol