How do the two compare
The glutamate residue is linked through its side-chain carboxyl, giving a gamma-glutamyl bond rather than a standard alpha-peptide bond, which is why the molecule resists most intracellular peptidases and is cleaved chiefly by gamma-glutamyl transpeptidase at the cell surface
For others, it might take a few weeks of consistent injections before you notice a change if your symptoms are more complicated, such as numbness, exhaustion, or memory problems
Zhang Y, Li M, Wang Y, Han F, Shen K, Luo L, Li Y, Jia Y, Zhang J, Cai W, Wang K, Zhao M, Wang J, Gao X, Tian C, Guo B, Hu D
interventions 15
(2020) IGF1-Mediated Human Embryonic Stem Cell Self-Renewal Recapitulates the Embryonic Niche Nat Commun 11(1):764