I was wondering if anybody could tell me if either one are present in the liver and if so could they please explain their functions. I was also wondering if copper would have an effect on the enzymes function. Thanks.
A quick search on medline and toxnet show that defects in Copper lead to oxidation problem in the liver. But it seems related to A problem with a CuZn dependant Superoxide dismutase (SOD), not with catalase or peroxidase.
SOD protects again oxidation by inacativating Superoxide ions which are a highly reactive oxygen species, but don not act on H2O2.