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| Index: > A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
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| Proteobacteria
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Escherichia coli | ||||
| Scientific classification | ||||
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| Orders | ||||
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Alpha Proteobacteria Caulobacterales Parvularcula les Rhizobiales - e.g. Rhizobium Rhodobacterales Rhodospirillales - e.g. Acetobacter Rickettsiales - e.g. Rickettsia Sphingomonadales Beta Proteobacteria Burkholderiales Hydrogenophilales Methylophilales Neisseriales - e.g. Neisseria Nitrosomonadales Rhodocyclales Procabacter iales Gamma Proteobacteria Acidithiobacillales Aeromonadales - e.g. Aeromonas Alteromonadales - e.g. Pseudoalteromonas Cardiobacteriales Chromatiales - purple sulfur bacteria Enterobacteriales - e.g. Escherichia Legionellales - e.g. Coxiella Methylococcales Oceanospirillales Pasteurellales Pseudomonadales - e.g. Pseudomonasaeruginosa P. fluorescens P. putida P. syringae etc. The bacterial genus Pseudomonas includes plant pathogenic bacteria such as P. syringae (various pathovars), the human pathogen P. aeruginosa the ubiquitous soil bacterium P. putida and some species that Thiotrichales - e.g. Thiomargarita Vibrionales - e.g. VibrioVibrio cholerae Vibrio fischeri Vibrio harveyi Vibrio vulnificus Vibrio parahaemolyticus Vibrio is a genus of bacteria, a member of the gamma group of the Proteobacteria, normally associated with diarrheal disease and other symptoms. Species include: Vibr Xanthomonadales - e.g. Stenotrophomonas Delta Proteobacteria Bdellovibrionales - e.g. BdellovibrioBdellovibrio Scientific classification Domain: Bacteria Phylum: Proteobacteria Class: Deltaproteobacteria Order: Bdellovibrionales Family: Bdellovibrionaceae Genus Bdellovibrio Species bacteriovorus ''starrii (now Bacteriovorax starrii stolpii (now Bacter Desulfobacterales Desulfovibrinoales Desulfurellales Desulfuromonadales MyxococcalesArchangiaceae Cystobacteraceae Myxoccaceae Polyangiaceae The myxobacteria are a group of bacteria that predominantly live in the soil. The myxobacteria have very large genomes, relative to other bacteria, e. 9-10 million nucleotides. Sorangium cellulosum - myxobacteria Syntrophobacterales Epsilon Proteobacteria CampylobacteralesCampylobacteraceae Helicobacteraceae The Campylobacterales are an order of proteobacteria, and comprise the majority of the epsilon subdivision. Genera Order Campylobacterales Family Campylobacteraceae Campylobacter Arcobacter Sulfurospirillum Thiovulvum - e.g. Helicobacter Nautiliales |
The Proteobacteria are a major group of bacteriaActinobacteria Aquificae Bacteroidetes/ Chlorobi Chlamydiae/ Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/ Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibac. They include 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. The group is defined mainly in terms of ribosomal RNA sequences, and is named for the Greek god Proteus, who could change his shape, because of the great diversity of forms found in it.
All proteobacteria are Gram-negative, with an outer membrane formed mainly of lipopolysaccharides. Many move about using flagella, but some rely on bacterial gliding. These include the myxobacteria, a unique group of bacteria that can aggregate to form multicellular fruiting bodies.
There is also a wide variety in the types of metabolism. Most proteobacteria are anaerobic, but there are many exceptions. The mitochondria that allow eukaryotic cells to conduct aerobic repiration are derived from proteobacteria, probably similar to rickettsias.
Nutrition is usually heterotrophic, but there are two groups that conduct photosynthesis, called purple bacteria. The purple sulfur bacteria use sulfur or hydrogen sulfide as an electron donor, and the purple non-sulfur bacteria use hydrogen. Because this role is not played by water, as it is among plants and cyanobacteria, no oxygen is produced.
The proteobacteria are divided into five sections, referred to by the Greek letters alpha through epsilon, again based on RNA sequences. Some may be paraphyletic. These are often treated as classes. The currently recognized orders are listed at right, together with some representative genera.
Bacteria Proteobacteria| Politics | Business | Finance |
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