peptidoglycan


peptidoglycan
A compound containing amino acid s (or peptides) linked to sugars, with the latter preponderant. Cf.:glycopeptide. SYN: mucopeptide (2).

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pep·ti·do·gly·can .pep-təd-ō-'glī-.kan n a polymer that is composed of polysaccharide and peptide chains and is found esp. in bacterial cell walls called also mucopeptide, murein

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pep·ti·do·gly·can (pep″tĭ-do-gliґkən) a high-molecular-weight polymer that forms the tough, rigid structure of bacterial cell walls. It is made up of three parts: (1) a backbone, composed of alternating N-acetylglucosamine and N-acetylmuramic acid; (2) a set of identical tetrapeptide side-chains attached to N-acetylmuramic acid; and (3) a set of identical peptide cross-bridges. The backbone is the same in all bacterial species; however, the tetrapeptide side-chains and the peptide cross-bridges vary from species to species.

Medical dictionary. 2011.

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  • Peptidoglycan — Peptidoglycan, also known as murein, is a polymer consisting of sugars and amino acids that forms a mesh like layer outside the plasma membrane of bacteria (but not Archaea), forming the cell wall. The sugar component consists of alternating… …   Wikipedia

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  • peptidoglycan — glikopeptidas statusas T sritis chemija apibrėžtis Oligopeptido ir polisacharido junginys. atitikmenys: angl. glycopeptide; peptidoglycan; peptidoglycane rus. гликопептид; пептидогликан ryšiai: sinonimas – peptidoglikanas …   Chemijos terminų aiškinamasis žodynas

  • peptidoglycan — noun Date: 1966 a polymer that is composed of polysaccharide and peptide chains and is found especially in bacterial cell walls called also mucopeptide, murein …   New Collegiate Dictionary

  • peptidoglycan — (pep tī do gli kan) A large polymer composed of long chains of alternating N acetylglucosamine and N acetylmuramic acid residues. The polysaccharide chains are linked to each other through connections between tetrapeptide chains attached to the N …   Dictionary of microbiology

  • peptidoglycan — (= murein) Cross linked polysaccharide peptide complex of indefinite size found in the inner cell wall of all bacteria (50% of the wall in Gram negative, 10% in Gram positive). Consists of chains of approximately 20 residues of b (1 4) linked N… …   Dictionary of molecular biology

  • peptidoglycan — pep·ti·do·gly·can (pĕp tĭ dō glīʹkən, kăn ) n. A polymer found in the cell walls of prokaryotes that consists of polysaccharide and peptide chains in a strong molecular network. Also called mucopeptide, murein.   [peptide + glycan, a… …   Universalium

  • peptidoglycan — noun A polymer of glycan and peptides found in bacterial cell walls Syn: mucopeptide …   Wiktionary

  • peptidoglycan — pep·ti·do·glycan …   English syllables

  • peptidoglycan — ¦pepˌtīdōˌ noun Etymology: peptide + o + glycan : a polymer that is composed of polysaccharide and peptide chains and is found especially in bacterial cell walls called also mucopeptide murein …   Useful english dictionary