See the Wolverine Stack guide for combined research-planning context
Overexpressed proteins were purified on a Ni-NTA column (Cytiva) with an elution buffer containing 50 mM NaH 2 PO 4 , 300 mM NaCl, and 300 mM imidazole
Topical serums Copper peptide serums are the most common format and the most likely to cause purging
Once you add bacteriostatic water, the clock starts ticking on a 28-30 day shelf life
Do not refreeze after reconstitution , crystallization during freezing/thawing can damage the peptide structure
Biochem J 196:363367 Shaheen SO, Rutterford CM, Lewis SJ, Ring SM, Holloway JW, Golding J, Henderson AJ (2015) Maternal selenium status in pregnancy, offspring glutathione peroxidase 4 genotype, and childhood asthma