Proteobacteria
| Medical Definition: |
A phylum of bacteria consisting of the purple bacteria and their relatives which form a branch of the eubacterial tree. This group of predominantly gram-negative bacteria is classified based on homology of equivalent nucleotide sequences of 16S ribosomal RNA or by hybridization of ribosomal RNA or DNA with 16S and 23S ribosomal RNA. |
| Guide Notes: |
DF: PROTEOBACT |
Proteobacteria Categories.
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Alphaproteobacteria - A class in the phylum PROTEOBACTERIA comprised mostly of two major phenotypes: purple non-sulfur bacteria and aerobic bacteriochlorophyll-containing bacteria. |
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Betaproteobacteria - A class in the phylum PROTEOBACTERIA comprised of chemoheterotrophs and chemoautotrophs which derive nutrients from decomposition of organic material. |
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Deltaproteobacteria - A group of PROTEOBACTERIA represented by morphologically diverse, anaerobic sulfidogens. Some members of this group are considered bacterial predators, having bacteriolytic properties. |
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Epsilonproteobacteria - A group of proteobacteria consisting of chemoorganotrophs usually associated with the DIGESTIVE SYSTEM of humans and animals. |
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Gammaproteobacteria - A group of the proteobacteria comprised of facultatively anaerobic and fermentative gram-negative bacteria. |
Proteobacteria Medical Definitions and Terms
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