Claims of dramatic short-term transformations are often exaggerated by marketing
Most lyophilized peptides remain viable for one to two years at four degrees, though some researchers report longer timeframes for robust sequences
It is created by the liver and is used for several bodily functions
Epitalon Preparation Prof Khavinson (Saint Petersburg, Russia) kindly provided the tested peptide Epitalon, which was dissolved in water at a stock concentration of 100 g/mL, then further diluted to prepare the three concentrations for testing (20, 40, and 60 ng/mL)
However, if you think you know which proteins might be interacting with your protein of interest, perhaps based on their size and biological context, then you could do a Western blot using antibodies against the proteins you think they are