This is useful. At least now I know more about how riboflavin feeds into one carbon and transulferation pathways. Why FAD is as important as NAD.

This may be a backend of why dysregulation of transulferation pathways speed up aging, and why certain transulferation gene variants have much longer lifespans.

It ties in metabolism of NO2 for Nucleotides, h2s for transulferation, and one carbon, and why they should be kept in balance.

Touches on epigenetic quality control.