SDHB (Succinate dehydrogenase [ubinone] iron sulfide subunit, mitochondrial), also known as SDH, SDH1， Belonging to the succinate dehydrogenase/fumarate ester reductase iron sulfide protein family. The iron sulfur protein (IP) subunit of succinate dehydrogenase (SDH) participates in the II of mitochondrial electron transport chain II and is responsible for transferring electrons from succinate to ubinone (coenzyme Q).
