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Understanding selenium and glutathione as antiviral factors in COVID-19: does the viral M pro protease target host Selenoproteins and glutathione synthesis
Its protonated epsilon-amino group carries positive charge that affects solubility, chromatographic retention and interaction with polyanionic matrix components, and in a physiological setting the lysine face is implicated in ternary complex formation with serum albumin, which has its own high-affinity N-terminal copper site
Separate ex vivo and in vitro studies suggest that combining GHK-Cu with hyaluronic acid, especially lower-molecular-weight fractions at specific ratios, may further support collagen IV presence at the dermalepidermal junction
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