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According to some definitions, the term is used to describe Gram-negative bacteria. [3] [4] According to other definitions, the term also encompasses yeasts. [5] [6] The name spheroplast stems from the fact that after the microbe's cell wall is digested, membrane tension causes the cell to acquire a characteristic spherical shape. [4]
Streptococcus is a genus of gram-positive or spherical bacteria that belongs to the family Streptococcaceae, within the order Lactobacillales (lactic acid bacteria), in the phylum Bacillota. [2] Cell division in streptococci occurs along a single axis, thus when growing they tend to form pairs or chains, which may appear bent or twisted.
Streptococcus pneumoniae, or pneumococcus, is a Gram-positive, spherical bacteria, alpha-hemolytic member of the genus Streptococcus. [1] S. pneumoniae cells are usually found in pairs and do not form spores and are non motile. [2]
The non-pathogenicity of S. carnosus is supported by the low number of mobile elements in its genome as well as a lack of toxins and superantigens found in pathogenic species like S. aureus and S. epidermidis. [3] [14] Although S. carnosus is avirulent, its genome encodes for several homologs of virulence factors found in other staphylococci. [15]
Staphylococcus is a genus of Gram-positive bacteria in the family Staphylococcaceae from the order Bacillales. Under the microscope, they appear spherical , and form in grape-like clusters. Staphylococcus species are facultative anaerobic organisms (capable of growth both aerobically and anaerobically).
Reproduction of T. namibiensis occurs on a single plane; the cocci (a spherical bacterial cell) divide into a diplococcus or streptococcus arrangement. [ 13 ] [ 42 ] A diplococcus is a pair of cocci cells that can form chains, and streptococcus is a grape-like cluster of cells. [ 43 ]
Like all other organisms, bacteria contain ribosomes for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and archaea. [ 69 ] Some bacteria produce intracellular nutrient storage granules, such as glycogen , [ 70 ] polyphosphate , [ 71 ] sulfur [ 72 ] or polyhydroxyalkanoates . [ 73 ]
It is part of the normal human microbiota, typically the skin microbiota, and less commonly the mucosal microbiota and also found in marine sponges. [2] [3] It is a facultative anaerobic bacteria. Although S. epidermidis is not usually pathogenic, patients with compromised immune systems are at risk of developing infection.