Keyword Analysis & Research: epsilonproteobacteria bacterium


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Frequently Asked Questions

What is the difference between Escherichia coli and Epsilonproteobacteria?

Escherichia coli, a member of Gammaproteobacteria, is perhaps the most studied bacterium. Deltaproteobacteria make up a small group able to reduce sulfate or elemental sulfur. Some are scavengers and form myxospores, with multicellular fruiting bodies. Epsilonproteobacteria make up the smallest group of Proteobacteria.

How do Epsilonproteobacteria meet their energy needs?

The Epsilonproteobacteria found at deep-sea hydrothermal vents characteristically exhibit chemolithotrophy, meeting their energy needs by oxidizing reduced sulfur, formate, or hydrogen coupled to the reduction of nitrate or oxygen.

What is the electron acceptor substrate of Epsilonproteobacteria?

Epsilonproteobacterial cells usually grow at the expense of microaerobic or anaerobic respiration and many species use hydrogen, formate or reduced sulphur compounds, such as sulphide or thiosulfate as electron donor substrates. Nitrate is a prominent electron acceptor in Epsilonproteobacteria and is initially reduced to nitrite by Nap.

What is the smallest class of Proteobacteria?

The smallest class of Proteobacteria is Epsilonproteobacteria, which are gram-negative microaerophilic bacteria (meaning they only require small amounts of oxygen in their environment). Two clinically relevant genera of Epsilonproteobacteria are Campylobacter and Helicobacter, both of which include human pathogens.


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