Plant Protochlorophyllide Oxidoreductases A and B: CATALYTIC EFFICIENCY AND INITIAL REACTION STEPS.

The enzyme protochlorophyllide oxidoreductase (POR, EC 1.3.1.

Arginine residues within the DNA binding domain of STAT3 promote intracellular shuttling and phosphorylation of STAT3.

Acetylation-dependent inactivation of STAT1 can be mimicked by the exchange of its lysine residues K410 and K413 to glutamine residues. STAT3 harbors non-acetylatable arginine moieties at the corresponding sites R414 and R417. It is unclear whether the mutation of these sites to glutamine residues antagonizes STAT3 activation.

Identification of a 16-nucleotide sequence that mediates post-transcriptional regulation of rat CYP2E1 by insulin.

Insulin directly down-regulates the gene expression of the rat CYP2E1 by altering its mRNA stability (De Waziers, I., Garlatti, M., Bouguet, J.