Gram Negative Bacteria
HUGE group that includes a wide variety of pathogens, such as Escherichia, Salmonella, Vibrio, Helicobacter, and many other notable genera.
Others are free-living, and include many of the bacteria responsible for nitrogen fixation.
Group defined primarily in terms of ribosomal RNA (rRNA) sequences.
Named for the Greek god Proteus, who could change his shape, because of the great diversity of forms found in this group.
Divided into five sections, referred to by the Greek letters alpha through epsilon, again based on rRNA sequences.
the list of Proteobacteria:
- Neisseria gonorrhoeae
- Escherichia coli
- Salmonella pullorum
- Vibrio cholerae
- Haemophilus influenzae