The Structure of the Tessera; the Unit Structure of Murein Wall
To enclose the surface area of a bacterium, a very large number of the penta-muropeptides have to be covalently linked together. This fabric can either be considered to be a network or as a porous material containing a large number of pores. The smallest functional unit of surface around a pore, delimited by a ring of covalently linked atoms, is called a tessera. The covalent structure of the tessera has a rigid, strong structure resulting from its formation from ten disaccharide penta-muropeptides. There are two muropeptide pairs linked to each other to form two nona-muropeptides, two muropeptides point above the surface plane, two of them point below, and two point outward within the plane and are part of other tesserae.
KeywordsBrain Heart Infusion Turgor Pressure Glycan Chain Diaminopimelic Acid Muramic Acid
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