Journal
JOURNAL OF BACTERIOLOGY
Volume 193, Issue 8, Pages 2046-2052Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.01422-10
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Funding
- Royal Society, New Zealand
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The C-terminal domain of subunit epsilon of the bacterial FoF1 ATP synthase is reported to be an intrinsic inhibitor of ATP synthesis/hydrolysis activity in vitro, preventing wasteful hydrolysis of ATP under low-energy conditions. Mutants defective in this regulatory domain exhibited no significant difference in growth rate, molar growth yield, membrane potential, or intracellular ATP concentration under a wide range of growth conditions and stressors compared to wild-type cells, suggesting this inhibitory domain is dispensable for growth and survival of Escherichia coli.
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