[hkuspace_graduate]

Hi, I m studying the effect of pH on redox reactions in the biosystem. I am wondering whether low pH would affect the redox equilibrium, if H+ is not directly involved in a chemical equation of a bioprocess? Coz i m interested in whether pH changes would affect the redox-regulated biomolecules.

Thx in advance.

[Borek]

Depends on the reaction. Even if H⁺ are not directly involved, concentration of active species may be pH dependent (think in terms of weak acids and bases).

[Yggdrasil]

pH may also affect the activity of the enzymes involved in the redox reactions.