The membrane domain of complex I is not assembled in the stopper mutant E35 of Neurospora

被引:12
作者
Alves, PC [1 ]
Videira, A
机构
[1] Univ Porto, Inst Ciencias Biomed Abel Salazar, Inst Biol Mol & Celular, P-4100 Porto, Portugal
[2] Univ Porto, Unidade Multidisciplinar Invest Biomed, P-4100 Porto, Portugal
关键词
mitochondria; complex I; stopper mutants; Neurospora crassa;
D O I
10.1139/bcb-76-1-139
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The assembly of mitochondrial NADH : ubiquinone oxidoreductase (complex I) was studied in the E35 stopper mutant of Neurospora crassa at different times during growth in liquid media. Assembly of complex I as well as of its membrane domain is impaired in this strain throughout the growth period. Nevertheless, a structure that resembles the peripheral arm of the enzyme is still formed in the mitochondria of this mutant. The absence of the membrane domain of complex I in E35 can be attributed to the specific deletion of the mitochondrial ND2 and ND3 subunits of the enzyme.
引用
收藏
页码:139 / 143
页数:5
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