teichoic acids
(ti-ko\'ik)
Polymers of glycerol or ribitol joined by phosphates; they are found in the cell walls of gram-positive bacteria.

Microbiology. . 2009.

Look at other dictionaries:

  • teichoic acids — One of two classes (the other being the muramic acid s or mucopeptides) of polymers constituting the cell walls of Gram positive bacteria, but also found intracellularly; linear polymers of a polyol (ribitol phosphate or glycerol phosphate)… …   Medical dictionary

  • Teichoic acid — s. It is known that teichoic acids in most cases contain d alanine residues (one per phosphodiester), making the molecule zwitterionic. These zwitterionic teichoic acids can activate the immune system, thus acting as antigen. They may also… …   Wikipedia

  • teichoic acid — tei·cho·ic acid tī .kō ik n any of a class of strongly acidic polymers found in the cell walls, capsules, and membranes of all gram positive bacteria and containing residues of the phosphates of glycerol and adonitol * * * tei·cho·ic ac·id (ti… …   Medical dictionary

  • teichoic — adjective Of or pertaining to the teichoic acids or their derivatives …   Wiktionary

  • wall teichoic acid — any of various teichoic acids that are attached to N acetylmuramic acid residues of the peptidoglycan of gram positive bacteria; they may serve as antigenic determinants for certain bacteria. Cf. lipoteichoic acid …   Medical dictionary

  • Gram-positive bacteria — Gram positive bacteria, stained purple, of both the bacillus (“rod shaped”) and coccus (spherical) forms.  A few Gram negative bacteria are also present, stained pink.  Numbered ticks are eleven (11) microns apart. Gram positive… …   Wikipedia

  • bacteria — bacterial, adj. bacterially, adv. /bak tear ee euh/, n.pl., sing. bacterium / tear ee euhm/. ubiquitous one celled organisms, spherical, spiral, or rod shaped and appearing singly or in chains, comprising the Schizomycota, a phylum of the kingdom …   Universalium

  • lipoteichoic acid — lipo·tei·cho·ic ac·id (lip″o ti koґik) any of various teichoic acids (q.v.) that are covalently linked to glycolipids of the plasma membrane of gram positive bacteria. In certain bacteria, they are major antigenic determinants. Cf. wall… …   Medical dictionary

  • Cell wall — A cell wall is a tough, flexible and sometimes fairly rigid layer surrounding a cell, located external to the cell membrane, which provides the cell with structural support, protection, and acts as a filtering mechanism. A major function of the… …   Wikipedia

  • Gram-negative bacteria — Microscopic image of Gram negative Pseudomonas aeruginosa bacteria (pink red rods). Gram negative bacteria are bacteria that do not retain crystal violet dye in the Gram staining protocol.[1] In a Gram …   Wikipedia

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