| Description | Complex II [succinate dehydrogenase (succinate-ubiquinone oxidoreductase); SDH] is the only enzyme shared by both the electron transport chain and the tricarboxylic acid (TCA) cycle in mitochondria. SDH is a heterotetrameric protein complex, anchored to the inner mitochondrial membrane by two integral membrane proteins, SDH3 and SDH4. The SDH3/SDH4 dimer binds to subunit SDH2, which contains three iron-sulfur (Fe-S) clusters and is assembled with the catalytic subunit SDH1 []. These membrane proteins (SDH1-4) are structurally and evolutionarily related, and include three membrane-spanning helices each, forming a conserved six-helix bundle that binds a heme group [].This entry represents succinate dehydrogenase 4 (SDH4) from plants. | Name | Succinate dehydrogenase subunit 4, mitochondrial |
| Short Name | SDH4 | Type | Family |
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