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Review
. 1992 Sep;50(9):263-7.
doi: 10.1111/j.1753-4887.1992.tb01343.x.

The pyrroloquinoline quinone (PQQ) coenzymes: a case of mistaken identity

E D Harris  1
Affiliations
Review

The pyrroloquinoline quinone (PQQ) coenzymes: a case of mistaken identity

E D Harris. Nutr Rev. 1992 Sep.

Abstract

Recent evidence has failed to support the claim for a pyrroloquinoline quinone (PQQ) cofactor in mammalian enzymes previously reported to have PQQ. The validity of the original analysis now has been questioned, and a second cofactor, topa quinone, has been identified in at least one enzyme.

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