Hydrogenophilaceae

Hydrogenophilaceae is a family of bacteria within the order Hydrogenophilales, which is part of the class Gammaproteobacteria. These bacteria are known for their ability to oxidize hydrogen gas (H2) and use it as an energy source. They are typically found in environments rich in hydrogen, such as anaerobic digesters, sewage treatment plants, and certain types of soil. Hydrogenophilaceae are characterized by their Gram-negative cell walls and the presence of cytochrome c oxidase, an enzyme that facilitates the transfer of electrons from hydrogen to oxygen. This process is crucial for their energy metabolism and growth. The family includes several genera, with Hydrogenophaga being one of the most well-studied. These bacteria play a role in the biogeochemical cycling of hydrogen and contribute to the overall health of their respective ecosystems. Their study is important for understanding microbial processes in various environmental and industrial settings.