Redox regulation

Redox regulation is one of system that regulates enzyme activities. In this system, thioredoxin (Trx) activates or deactivates its target enzymes by transferring electron (e-). In this game, orange- or pink-colored enzymes are activated by Trx, while gray-colored enzymes are deactivated by Trx. When the electron hits orange- or pink-colored enzymes, you earn points. But, when electron hits gray-colored enzymes, you lost points.