Scientists have discovered.

It’s an extremely interesting mechanism.’ Cells normally put methionines near important parts of a protein to safeguard those segments from being broken by reactive oxygen species. When the cell is definitely under stress, and the amount of ROS increases, the amount of methionine ‘errors’ is ramped up tenfold, allowing brand-new proteins to be even more resistant to attack. ‘Think about a boxing match,’ Pan said. ‘If you put methionine near energetic site, the reactive oxygen species has to get past it to access the energetic site residues for oxidization. You’ve put something right before it so a protein can take a hit. (more…)

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