Organisms with this property uniquely express a di-glucosamine conjugated to six fatty acids and two phosphate groups, a compound called lipid A. Old phylogenetic trees defined Gracilicutes as organisms with this property and Firmicutes as organisms without it.
Organisms with this property uniquely express a di-glucosamine conjugated to six fatty acids and two phosphate groups, a compound called lipid A. Old phylogenetic trees defined Gracilicutes as organisms with this property and Firmicutes as organisms without it. Safranin is used to colorize organisms with this trait. Organisms with this property express lipopolysaccharide in the outer (*) membrane, which surrounds the periplasm. Aminoglycosides were developed to target these organisms since they are generally unaffected by beta-lactams. This trait corresponds to having a thin layer of peptidoglycan in the cell wall, so they won't retain iodine and crystal violet. For 10 points, name this property possessed by E. coli and other bacteria that don't turn purple after a certain stain.
Organisms with this property uniquely express a di-glucosamine conjugated to six fatty acids and two phosphate groups, a compound called lipid A. Old phylogenetic trees defined Gracilicutes as organisms with this property and Firmicutes as organisms without it.
Gram-negative bacteria [prompt on bacteria or prokaryotes]