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Proteus is a genus of Gram-negative bacteria. It is a rod shaped, aerobic and motile bacteria, which is able to migrate across surfaces due its “swarming” characteristic in temperatures between 20 and 37 °C. [1] Their size generally ranges from 0.4 to 0.8 μm in diameter and 1.0–3.0 μm in length. They tend to have an ammonia smell. [2]
Enterobacterales (of which Proteus is a member) and Pseudomonas species are the micro-organisms most commonly responsible for Gram-negative bacteremia and sepsis. The presence of the sepsis syndrome associated with a urinary tract infection (UTI) should raise the possibility of urinary tract obstruction. This is especially true of patients who ...
This article lists the orders of the Bacteria.The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [1] and National Center for Biotechnology Information (NCBI) [2] and the phylogeny is based on 16S rRNA-based LTP release 132 by The All-Species Living Tree Project.
Proteus mirabilis appears as Gram-negative rods after Gram staining under bright-field microscopy with 1000 times magnification. Proteus mirabilis is a Gram-negative, facultatively anaerobic, rod-shaped bacterium. It shows swarming motility and urease activity. P. mirabilis causes 90% of all Proteus infections in humans.
Similar to other members of the Enterobacterales order, Proteus hauseri is oxidase negative, catalase positive, glucose fermenting, and nitrate reducing. [1] P. hauseri is ONPG negative and PDA positive [citation needed].
Bacterial taxonomy is subfield of taxonomy devoted to the classification of bacteria specimens into taxonomic ranks. Archaeal taxonomy are governed by the same rules. In the scientific classification established by Carl Linnaeus , [ 1 ] each species is assigned to a genus resulting in a two-part name.
American microbiologist Carl Woese established this grouping in 1987, calling it informally the "purple bacteria and their relatives". [12] The group was later formally named the 'Proteobacteria' after the Greek god Proteus, who was known to assume many forms. [13]
Proteus vulgaris is commonly found in the intestine in various animals, and is shed into manure and soil. About 10–15% of kidney stones are struvite stones, caused by alkalinization of the urine by the action of the urease enzyme of Proteus (and other) bacterial species. [3]