(1) succinate@mitochondrial matrix+ubiquinone@mitochondrial inner membrane - FAD:SDHA:SDHB:SDHC:SDHD:cardiolipin:heme b:phosphatidylethanolamine@mitochondrial inner membrane -> fumarate@mitochondrial matrix+ubiquinol@mitochondrial inner membrane
(2) FAD:SDHA@mitochondrial inner membrane+SDHB@mitochondrial inner membrane+SDHC@mitochondrial inner membrane+SDHD@mitochondrial inner membrane - SDHAF1@mitochondrial inner membrane -> FAD:SDHA:SDHB:SDHC:SDHD:cardiolipin:heme b:phosphatidylethanolamine@mitochondrial inner membrane
synonym complex II synonym 1.3.5.1 synonym fumarate reductase