這個基因編碼四個核編碼亞單位之一，包括琥珀酸脫氫酶，也被稱為線粒體復合物ii，一個三羧酸循環和線粒體有氧呼吸鏈的關鍵酶復合物。編碼的蛋白質是兩個完整的膜蛋白之一，它們將復合物的其他亞單位（形成催化核心）固定在線粒體內膜上。這個基因在不同染色體上有幾個相關的假基因。這個基因的突變與副神經節瘤有關。另外，已經描述了剪接轉錄變體。[由RefSeq提供，2013年5月]
This gene encodes one of four nuclear-encoded subunits that comprise succinate dehydrogenase, also known as mitochondrial complex II, a key enzyme complex of the tricarboxylic acid cycle and aerobic respiratory chains of mitochondria. The encoded protein is one of two integral membrane proteins that anchor other subunits of the complex, which form the catalytic core, to the inner mitochondrial membrane. There are several related pseudogenes for this gene on different chromosomes. Mutations in this gene have been associated with paragangliomas. Alternatively spliced transcript variants have been described. [provided by RefSeq, May 2013]