Taxa

Alphaproteobacteria

Class

Citation Formats

General Reference

Nature Atlas. "Alphaproteobacteria." Accessed September 8, 2026. https://nature.interactiveatlas.org/taxa/class-alphaproteobacteria.

APA Style

Nature Atlas. (n.d.). Alphaproteobacteria. Retrieved September 8, 2026, from https://nature.interactiveatlas.org/taxa/class-alphaproteobacteria

BibTeX

@misc{natureatlas-alphaproteobacteria,
  author = {Nature Atlas},
  title = {Alphaproteobacteria},
  year = {2026},
  url = {https://nature.interactiveatlas.org/taxa/class-alphaproteobacteria},
  note = {Accessed September 8, 2026}
}

Alphaproteobacteria, also called alpha-proteobacteria or, in older literature, alpha-purple bacteria, is a class of bacteria within the phylum Pseudomonadota. Its members are genetically related but ecologically and physiologically diverse, and most are Gram-negative, though some parasitic members show variable gram staining.

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