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Klebsiella aerogenes, [2] previously known as Enterobacter aerogenes, is a Gram-negative, oxidase-negative, catalase-positive, citrate-positive, indole-negative, rod-shaped bacterium. [3] Capable of motility via peritrichous flagella, [ 4 ] it is approximately one to three microns in length.
Enterobacteriaceae is a large family of Gram-negative bacteria. It includes over 30 genera and more than 100 species. It includes over 30 genera and more than 100 species. Its classification above the level of family is still a subject of debate, but one classification places it in the order Enterobacterales of the class Gammaproteobacteria in ...
Cronobacter is a genus of Gram-negative, facultatively anaerobic, oxidase-negative, catalase-positive, rod-shaped bacteria of the family Enterobacteriaceae.Several Cronobacter species are desiccation resistant and persistent in dry products such as powdered infant formula. [3]
Klebsiella bacteria tend to be rounder and thicker than other members of the family Enterobacteriaceae. They typically occur as straight rods with rounded or slightly pointed ends. They can be found singly, in pairs, or in short chains. Diplobacillary forms are commonly found in vivo. [6]
Antibiotic resistance has become widespread in bacterial pathogens, and in Gram-negative bacteria such as the Enterobacteriaceae, much of this comes from acquired genes. The resistance genes encode proteins that export or inactivate β-lactam antibiotics , aminoglycosides , tetracycline , chloramphenicol , fosfomycin , etc. Plasmids carrying ...
The genus Hafnia is one of more than 40 genera that currently comprise the order Enterobacterales.. Although Møller originally described this genus in 1954, the legitimacy of this group was constantly challenged over the next two decades, often being referred to by synonyms such as "Enterobacter alvei", "Enterobacter aerogenes subsp. hafniae" and "Enterobacter hafniae" but it is mostly ...
The final synthesis step, polymerization, occurs on the periplasmic side of the inner membrane. Step 10: WzxE, a flippase, flips Lipid III from the cytoplasmic side of the inner membrane to the periplasmic side of the inner membrane. Step 11: WzyE polymerizes the ECA trisaccharides by taking the ECA unit from the lipid carrier and WzxE.
Carbapenem-resistant Enterobacteriaceae (CRE) or carbapenemase-producing Enterobacteriaceae (CPE) are gram-negative bacteria that are resistant to the carbapenem class of antibiotics, considered the drugs of last resort for such infections.