Reference : Structure des parois de Bacillus megaterium KM II. étude des complexes mucopeptidique...
Scientific journals : Article
Life sciences : Biochemistry, biophysics & molecular biology
Structure des parois de Bacillus megaterium KM II. étude des complexes mucopeptidique et phosphomucopolysaccharidique
[en] Structure of the walls of Bacillus megaterium KM. II Study of the mucopeptide and phosphomuco-polysaccharide complexes
Ghuysen, Jean-Marie [Université de Liège - ULiège > > Service de Bactériologie > > >]
Leyh-Bouille, Mélina [Université de Liège - ULiège > > Service de bactériologie > >]
Dierickx, L. [Université de Liège - ULiège > > Centre National de Production et d'Etude des Substances d'origine microbienne > > >]
Biochimica et Biophysica Acta
Yes (verified by ORBi)
[en] bacillus megaterium ; glycosaminoglycans ; mucoproteins
[en] Bacillus megaterium KM cell walls are composed of two distinct heteropolymers. The first, referred as to X-teichoic acid, presents a molecular weight of about 11000. It consists of about 10 subunits containing P, glucose and GlcNHAc in the molar ratio 1/2/1.3 as well as a polyol compound. It does not play any role in maintaining the rigidity of the wall. The second can be visualized as a three-dimensional network of structural subunits consisting of four mucopeptide residues with an average composition GlcNHAc1- (N-acetylmuramic acid)1-Ala2.20-Glu1- ([alpha],[epsilon]-diaminopimelic acid)1. They also contain glucose. This mucopeptide is the basal structure of the wall. The two heteropolymers are present in equimolar proportions. They are covalently bound through glucosido-muraminyl bridges branched on some of the alanine residues of the basal mucopeptide thanks to amidic linkages.
Researchers ; Professionals

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