teichoic acid


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teichoic acid

[tā′kō·ik ′as·əd]
(biochemistry)
A polymer of ribitol or glycerol phosphate with additional compounds such as glucose linked to the backbone of the polymer; found in the cell walls of some bacteria.
References in periodicals archive ?
The bacterial cell wall consists of a thick multilayered sacculus made of peptidoglycan (PG), decorated with teichoic acids (wall teichoic acids (WTA) and/or lipoteichoic acids (LTA)), exopolysaccharides (EPS), proteinaceous filaments called pili, and proteins that are anchored to the cell wall through different mechanisms (Figure 1).
But two molecules successfully blocked the early-stage gene and hindered teichoic acid production.
At neutral pH, most of bacterial cell walls possess an overall negative charge from carboxyl and amino groups as well as from phosphate groups present in teichoic acids [19].
(2009) [41] who demonstrated that cell components such as teichoic acids are the possible binding sites for AFB1.
Teichoic acids also play key role on [AFB.sub.1] binding by bacteria (Hernandez-Mendoza et al., 2009).
It is a partially deacylated polymer of (3-1, 6-N-acetylglucosamine, which, with the other polymers such as teichoic acids and proteins, can form a major part of the extracellular matrix.
Another 29 reviews consider such topics as mechanisms of acid resistance in Escherichia coli, microbial contributions to phosphorus cycling in eutrophic lakes and wastewater, wall teichoic acids of Gram-positive bacteria, biological consequences and advantages of asymmetric bacterial growth, prions and the potential transmissibility of protein misfolding diseases, and the wonderful world of archaeal viruses.
In the Gram-positive bacteria, the cell wall is thick (15-80 nanometers), consisting of several layers of peptidoglycan complexed with molecules called teichoic acids. In the Gram-negative bacteria, the cell wall is relatively thin (10 nanometers) and is composed of a single layer of peptidoglycan surrounded by a membranous structure called the outer membrane [2,6,22,32].