Cooperation with Other Enzymes

Targets of laccase catalysis are often embedded in, entangled with, or shielded by heterogeneous substances inert to laccase action. Other enzymes may be required to transform or degrade those substances to expose the targets for laccase. For instance, a mixture of cellulase, hemicellulase, and laccase may be used to syn-ergistically degrade lignocellulosic biomass. Laccase may also be used to support the catalysis of other enzymes for in situ cosubstrate generation, cofactor recycling, or inhibitor elimination. For instance, a laccase-catalyzed phenol ^ (semi-quinone quinone oxidation could recycle the reduced quinone which is used to generate active Fenton reagents (oxy radicals), in collaboration with aryl alcohol oxidase or other enzymes [7, 187]. Laccase could also be applied to oxidize Mn2+ to Mn3+, whose interaction with O2 could then (via O-) generate H2O2 for feeding Mn-peroxidase [177]. A laccase subsystem may even serve as the final electron acceptor for flavoenzymes (see Section

Heal Yourself With Qi Gong

Heal Yourself With Qi Gong

Qigong also spelled Ch'i Kung is a potent system of healing and energy medicine from China. It's the art and science of utilizing breathing methods, gentle movement, and meditation to clean, fortify, and circulate the life energy qi.

Get My Free Ebook

Post a comment