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Liao and colleagues (2018) showed it's significantly more stable than ascorbic acid while still being effective

When they reach a critically short length, the cell can no longer divide a state called replicative senescence, also known as the Hayflick limit

The first reported lipididation was the addition of palmitate to cysteine 77 (Willert et al., 2003)

To illustrate this strategy dihydroxylation of the orthoester 92 (derived from L-pyroglutamic acid [97]) was performed to afford a single diastereoisomer 93 since the bulky orthoester residue allows the osmylation to occur from the opposite side (less hindered face)

Hence, the Keap1/Nrf2/xCT signaling pathway, a master regulator of cysteine metabolism, is frequently mutated in cancers and can be activated by oncogenic drivers such as KRas and PI3K, underscoring its critical role in tumorigenesis (127)