Peroxiredoxin 6 (Prdx6) is a widely expressed enzyme essential for various biological functions and shows differences in peroxidase activity between humans and rats despite a minor variation in their amino acid sequences.
The study found that this activity difference may be due to structural changes in the human variant, which enhances its flexibility and dynamics, particularly in its active site.
These findings suggest that specific alterations in Prdx6 could influence its regulatory mechanisms and efficiency related to the thioredoxin fold, indicating the potential for cis-acting regulatory sequences.