Structure of a Gram-Negative Cell Wall

Gram-negative bacteria stain pink with the gram stain procedure. The Gram-negative cell wall is composed of a thin, inner layer of peptidoglycan and an outer membrane consisting of molecules of phospholipids, lipopolysaccharides (LPS), lipoproteins and sutface proteins. The lipopolysaccharide consists of lipid A and O polysaccharide.

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Updated: January 27, 2001
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