Cytochrome c oxidase subunit 2

细胞色素C氧化酶 cytochrome c oxidase

　　 亦称细胞色素氧化酶。在细胞呼吸中处于细胞色素系统的末端。此酶是把呼吸底物的电子经过细胞色素系统直接传递给分子态氧（即具有自动氧化作用）。 EC1． 9． 3． 1。通常用还原型细胞色素 c的氧催化氧化的作用来进行活性测定。凯林（ D． Keilin， 1930）在心肌提取物中首先发现此酶的活性。以前认为是靛酚氧化酶所催化，后来明确了靛酚反应是与细胞色素 c和细胞色素 c氧化酶二者都有关系。从那以后，凯林在心肌和酵母中发现与一氧化碳结合的一种细胞色素（细胞色素 a3 ），并认为

Preparation of Respiratory Chain Complexes from Saccharomyces cerevisiae Wild-Type and Mutant Mitochondria: Activity Measurement and Subunit Compositi

(ubiquinol cytochrome c oxido reductase or bc1 complex), IV (cytochrome c oxidase), and V (ATP synthase). These respiratory complexes are conserved from the yeast Saccharomyces cerevisiae to human with the exception of complex I, which is replaced

Identification of Mutations in mtDNA from Patients Suffering Mitochondrial Diseases

, all of which are subunits of the respiratory chain complexes. Of the 13 structural genes, 7 encode subunits of complex I (NADH-CoQ oxidoreductase), 1 encodes the cytochrome-b subunit of complex III (CoQ-cytochrome-c oxidoreductase), 3 encode subunits of complex IV