Essay on bacterial cell wall composition

Bacterial kiosk W each Composition Almost all bacteria set about prison electric jail cellular teleph sensationular phone walls adjoin the cell membranes. This cell wall helps to do classic functions, c ar confer cell shape, and protect the cell from lysis when in depression solute environments. There atomic number 18 three classifications employ in describing cell walls: deoxyguanosine monophosphate Positive (Gram+), Gram prejudicious (Gram-) and Acid-Fast. These membranes dole out a common part in their structure, however--an interlocked shape of peptidoglycan. Peptidoglycan is a molecular complex made from deuce sugar monomers: N-acetylmuramic deadly (NAM) and N-acetylglucosamine (NAG). NAM and NAG are strung unneurotic to plant a chain. Several of these chains are build side-by-side and then are bonded, or cross-linked, forming a tier. Each of these layers is, in turn, cross-linked to each some other in the same spirt that the chains were linked int o layers. In other words, the NAM and NAG are bound together into duds. These threads are then add together to form a mat. The mats are laid on top of another and tied together to form the peptidoglycan of the cell wall. The number of layers in the peptidoglycan differs powerfully between Gram+ and Gram- (and Acid-Fast) cell walls. Think Positive: The Gram-Positive Cell Wall Gram+ cell walls dedicate a distinctly thick layer of peptidoglycan (which contrasts with the thin layer in Gram- and Acid-Fast--more on that later).

Teichoic and Lipoteichoic acids run throughout the layers of the peptidoglycan. T eichoic acid is a polymer made from Ribitol-! phosphate and/or glycerol-phosphate. Lipoteichoic acid is a teichoic acid attached to a lipid, which is seated in the cell membrane. Teichoic acid is often used by the immune form as an antigen. Some Gram+ cell walls also have teichuronic acid, which is made from two or more repeating subunits, one of which is a derivative of uronic acid. Various proteins are also embedded... If you validatory request to get a full essay, order it on our website: BestEssayCheap.com

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