
Origin, Properties and Introduction of Pyrroloquinoline Quinone
Origin of Pyrroloquinoline Quinone (PQQ) Pyrroloquinoline Quinone (PQQ) is a redox cofactor and a small, bioactive quinone compound. It was first discovered in 1979 in Escherichia coli by scientists looking into bacterial enzymes. PQQ was initially recognized as a cofactor…









