FMN, Ubiquinone, and Heme

FMN, ubiquinone, and heme are all important cofactors in cellular metabolism.

• What is FMN? FMN is a flavin derivative that can accept or donate electrons. It is a cofactor for many enzymes involved in cellular metabolism, including NADH dehydrogenase.
• What is ubiquinone? Ubiquinone is a lipid-soluble coenzyme that can also transfer electrons. It is a component of the electron transport chain, where it helps to shuttle electrons from one carrier to another.
• What is heme? Heme is a prosthetic group that contains iron and is essential for oxygen transport and electron transport. It is found in hemoglobin, myoglobin, and cytochromes.