Some of these ORFs encode gene products with known biological features, such as the regulation of RNA synthesis, the transport of ribose and ribitol, and the essential components of nucleic acid and cell wall teichoic acid biosynthesis.
12.
Assignment of a strain to the genus " Staphylococcus " requires it to be a Gram-positive coccus that forms clusters, produces catalase, has an appropriate cell wall structure ( including peptidoglycan type and teichoic acid presence ) and G + C content of DNA in a range of 30 40 mol %.
13.
In bacterial efflux systems, certain substances that need to be extruded from the cell include surface components of the bacterial cell ( e . g . capsular polysaccharides, lipopolysaccharides, and teichoic acid ), proteins involved in bacterial pathogenesis ( e . g . hemolysis, heme-binding protein, and alkaline protease ), heme, hydrolytic enzymes, S-layer proteins, competence factors, toxins, antibiotics, bacteriocins, peptide antibiotics, drugs and siderophores.
