GPNA (monohydrate)

GPNA is a substrate for γ-glutamyl transpeptidase. GPNA has also been shown to be an inhibitor of glutamine uptake - solute-linked carrier family A1 member 5 (SLC1A5). Cellular uptake of L-glutamine (regulated by SLC1A5) is a rate-limiting step that activates mTOR and is, thus, an interesting cancer chemotherapy target.