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Biochem/physiol Actions

In bacteria, pyrroloquinoline quinone (PQQ) is used as a redox cycling cofactor. It acts as a cofactor (prosthetic group) for enzyme-catalyzed redox reactions of glucose and methanol dehydrogenase(s). PQQ is used in liposomes to establish a simple homogeneous assay for the detection of membrane permeabilization by antimicrobial peptides and synthetic copolymers. In bovine plasma amine oxidase, methoxatin may acts as the cofactor.

General description

Methoxatin/pyrroloquinoline quinone (PQQ) is mostly seen in plants, few bacteria and single cell eukaryotes, like yeast. It is mainly obtained from methylotrophic bacteria. PQQ may also present in the tissues of mammals.