Energy metabolism ofBdellovibrio bacteriovorus

✍ Scribed by D. Gadkari; H. Stolp

• Book ID: 104770015
• Publisher: Springer
• Year: 1976
• Tongue: English
• Weight: 637 KB
• Volume: 108
• Category: Article
• ISSN: 0302-8933
• DOI: 10.1007/bf00425102

✦ Synopsis

The P/O ratio of Bdellovibrio bacteriovorus, strain Ball09 Sa, was evaluated by two different methods based on the determination of energy-rieh phosphate bonds and either NADH oxidation or oxygen-uptake. P/O values calculated on the basis of N A D H oxidation were up to 6, which has to be regarded as being overestimated. P/O values calculated from energy-rich phosphate bonds and oxygen uptake were around 2. The P/O values determined for Escherichia coli B were similar. The loss of phosphorylation efficiency at one site is discussed.

The ATP pool turnover rate of Bdellovibrio was 8/rain during endogenous respiration and 24/min during substrate respiration. The corresponding values in Escherichia coli B were 3/min and 38/min.