Díaz Francisca, Barrientos Antoni, Fontanesi Flavia
University of Miami Miller School of Medicine, Miami, Florida, USA.
Curr Protoc Hum Genet. 2009 Oct;Chapter 19:Unit19.4. doi: 10.1002/0471142905.hg1904s63.
The oxidative phosphorylation (OXPHOS) system consists of five multimeric complexes embedded in the mitochondrial inner membrane. They work in concert to drive the aerobic synthesis of ATP. Mitochondrial and nuclear DNA mutations affecting the accumulation and function of these enzymes are the most common cause of mitochondrial diseases and have also been associated with neurodegeneration and aging. For this reason, several approaches for the assessment of the OXPHOS system enzymes have been progressively developed. Based on methods described elsewhere, the use of blue native gel electrophoresis (BNGE) techniques to routinely assess the OXPHOS system and screen for enzymatic defects in homogenates or mitochondrial preparations from tissues or cultured cells is described here.
氧化磷酸化(OXPHOS)系统由嵌入线粒体内膜的五种多聚体复合物组成。它们协同工作以驱动ATP的有氧合成。影响这些酶的积累和功能的线粒体和核DNA突变是线粒体疾病的最常见原因,并且也与神经退行性变和衰老有关。因此,已经逐步开发了几种评估OXPHOS系统酶的方法。基于其他地方描述的方法,本文描述了使用蓝色非变性凝胶电泳(BNGE)技术常规评估OXPHOS系统并筛选来自组织或培养细胞的匀浆或线粒体制剂中的酶缺陷。