Meanwhile, glutathione is highly concentrated in the liver and the gut, where it helps process toxins that might otherwise irritate the intestinal lining
As a peptide boronate, it reversibly forms tetrahedral adducts with Thr 1 residues in the catalytic 5 subunits with an extremely low dissociation rate, explaining its extraordinary potency: EC 50 of 0.6 nM for proteasome's chymotryptic activity
On the other hand, transcripts from these genes were down-regulated in two susceptible cultivars (compatible interaction)
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doi:10.1080/10715762.2019.1645955
"Nutritional Requirements of Pigs - Management and Nutrition"