Archaeal cell membrane

The archaeal cell membrane is a distinct biological boundary that separates the interior of archaeal cells from their environment, playing a crucial role in maintaining cellular integrity and energy transduction. It is chemically unique, utilizing ether-linked isoprenoid lipids instead of the ester-linked fatty acids found in Bacteria and Eukarya (Koga & Morii, 2007). These lipids often form highly stable monolayers or bilayers that allow Archaea to survive in extreme environments, such as high temperatures and acidic conditions (Valentine, 2007). Although Archaea are not known to be primary human pathogens, they are prevalent in the human gut and oral cavity, where they may contribute to conditions like periodontitis and metabolic imbalances (Dridi et al., 2011). Because of its unique chemical structure, the membrane is not affected by many conventional antibiotics that target bacterial cell walls or membranes. However, it can be disrupted by certain ionophores like monensin, which dissipate the electrochemical gradients necessary for ATP synthesis (Oger & Cario, 2013). Research into targeting these membranes is primarily focused on modulating the human microbiome rather than treating acute infections.

Other names

Archaeal plasma membraneArchaeal cytoplasmic membraneIsoprenoid lipid membrane

Ionophore-mediated disruption of chemiosmotic gradients across the lipid membrane.