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(6) classes of gram negative bacteria
alpha, beta, gamma, delta, epsilon proteobacteria
alphaproteobacteria
environmental microbes (not pathogenic), nitrogen fixers, purple non-sulfur phototrophs
Rickettsia
Pathogenic alphaproteobacteria, transmitted through bite of a bug
brucella
Pathogenic betaproteobacteria causes brucellosis
Neisseria
Pathogenic betaproteobacteria, Inhabits mucous membranes of mammals, Causes numerous diseases like gonnorea
Bordetella
- Pathogenic betaproteobacteria
- causes pertussis
what is the Largest and most diverse class of proteobacteria
gammaproteobacteria
Glycolytic facultative anaerobes
Largest group of gammaproteobacteria, Catabolize carbohydrates by glycolysis and the pentose phosphate pathway
Pseudomonads
Break down numerous organic compounds, notable for its polar flagella (causes urinary tract, ear, and lung infections)
Gram-Negative Deltaproteobacteria
Desulfovibrio, Bdellovibrio, Myxobacteria
Gram-Negative Epsilonproteobacteria
Important genera include: Campylobacter, Gastroenteritis, Helicobacter
Chlamydias
Grow intracellularly in mammals, birds, and some invertebrates
Chlamydia trachomatis
Most common sexually transmitted bacteria in theUnited States, Common cause of blindness in developing countries
Spirochetes
Motile bacteria that move in a corkscrew motion, Have diverse metabolism and habitats
Treponema pallidum
Syphilis, yews
Borrelia burgdorferi
Lyme disease
Bacteroids
Inhabit digestive tracts of humans and animals. good bacteria but some cause infection