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SDHC(Succinate dehydrogenase cytochrome b560 subunit, mitochondrial) is also named as CYB560, SDH3 and belongs to the cytochrome b560 family. It is involved in complex II of the mitochondrial electron transport chain and is responsible for transferring electrons from succinate to ubiquinone (coenzyme Q). Defects in SDHC are the cause of paragangliomas type 3 (PGL3) and paraganglioma and gastric stromal sarcoma (PGGSS). It has a transit peptide of 29 amino acid and has 5 isoforms produced by alternative splicing.