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The substitution at position 2 is the functionally important one: it blocks cleavage by dipeptidyl peptidase-4, the protease that degrades native GRF within minutes
Background and Discovery Once upon a time in the groovy 1970s, a group of curious scientists was on a mission to unravel the mysteries of the brain
Glutathione is a tripeptide with a reactive thiol (-SH) group and a hydrophilic nature (high polarity)
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