Proteobacteria are a major phylum of Gram-negative bacteria that includes a wide variety of pathogenic and non-pathogenic species. They are characterized by their diverse metabolic capabilities and roles in various environments.
5 Must Know Facts For Your Next Test
Proteobacteria are classified into six classes: Alphaproteobacteria, Betaproteobacteria, Gammaproteobacteria, Deltaproteobacteria, Epsilonproteobacteria, and Zetaproteobacteria.
Many Proteobacteria are capable of nitrogen fixation, which is crucial for converting atmospheric nitrogen into a form usable by plants.
Proteobacteria include notable pathogens such as Escherichia coli, Salmonella, and Helicobacter pylori.
They exhibit a wide range of metabolic diversity including phototrophy, lithotrophy, and heterotrophy.
Proteobacteria play vital roles in the human microbiome, particularly in the gut and respiratory tract.
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Related terms
Gram-Negative Bacteria: Bacteria that have a thin peptidoglycan layer and an outer membrane containing lipopolysaccharides.