Edwards D L, Kwiecinski F, Horstmann J
J Bacteriol. 1973 Apr;114(1):164-8. doi: 10.1128/jb.114.1.164-168.1973.
A method is described that permits the isolation of mutants that are defective in mitochondrial respiration. The techniques of inositol-less death and overlay with 2,3,5-triphenyl-2H-tetrazolium chloride are utilized to select for mutant colonies. Colonies that survive inositol-less death and fail to reduce the tetrazolium dye are then tested polarographically for cyanide-sensitive respiration. A preliminary characterization of three mutants obtained by this method is presented. The mutants have been characterized by their cyanide-sensitive respiration rate, growth rate, the state III respiration rate of isolated mitochondria, inhibition of the respiration of isolated mitochondria by cyanide and antimycin A, and cytochrome spectra. All of the mutants described differ from the parent strain in some of these aspects.
本文描述了一种可分离线粒体呼吸缺陷型突变体的方法。利用无肌醇死亡技术和用2,3,5-三苯基-2H-四氮唑氯化物覆盖的方法来筛选突变菌落。然后对在无肌醇死亡中存活且不能还原四氮唑染料的菌落进行极谱法检测其对氰化物敏感的呼吸作用。本文给出了通过该方法获得的三个突变体的初步特征。这些突变体通过其对氰化物敏感的呼吸速率、生长速率、分离线粒体的状态III呼吸速率、氰化物和抗霉素A对分离线粒体呼吸的抑制作用以及细胞色素光谱进行了表征。所描述的所有突变体在这些方面中的某些方面与亲本菌株不同。