Abstract
Allen, Emma G. (Downstate Medical Center, Brooklyn, N.Y.). Use of tetrazolium salts for electron transport studies in meningopneumonitis. I. Reduced nicotinamide adenine dinucleotide system. J. Bacteriol. 90:1505–1512. 1965.—Purified preparations of meningopneumonitis virus (MP) prepared from allantoic fluids of infected chick embryo reduce several tetrazolium salts in the presence of reduced nicotinamide adenine dinucleotide under both aerobic and anaerobic conditions. The pattern of reduction by MP differs from that seen in normal allantoic membrane homogenates, and is inhibited by several cations but not by KCN, atabrine, amytal, antimycin A, or 2,3-dimercaptopropanol (BAL). The reduction of cytochrome c by purified preparations of MP differs from its reduction of tetrazolium salts in that the cytochrome reaction is completely inhibited by BAL and partially inhibited by amytal, atabrine, and antimycin A. The cytochrome reductase of normal allantoic membrane preparations is completely inhibited by each of these compounds.
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