Cellular and microbial membranes and proteins

Cellular and microbial membranes and proteins represent a broad classification of biological structures rather than a single, discrete therapeutic target. This category encompasses the phospholipid bilayers that define cellular boundaries and the vast array of proteins responsible for nearly all biological processes, including transport, signaling, and metabolism (Source: NIH). In pharmacology, this term often refers to the site of action for non-specific agents such as antiseptics and disinfectants, which achieve microbicidal effects by denaturing proteins and dissolving lipid membranes (Source: StatPearls). It also includes the targets of specific membrane-active antibiotics like Polymyxin B and Colistin, which bind to lipopolysaccharides and disrupt the outer membrane of Gram-negative bacteria (Source: PubChem). Other agents, such as the antifungal Amphotericin B, target specific components like ergosterol within microbial membranes to induce leakage (Source: FDA). Because this classification covers almost all biological machinery in both host and pathogen, it is considered too broad for specific drug design and carries significant risks of off-target toxicity if selectivity is not achieved.

Other names

Biological membranesCellular proteinsMicrobial cell wall and membrane componentsPlasma membranes

Drugs targeting these structures typically act through the physical disruption of the lipid bilayer, pore formation, or the non-specific denaturation of functional proteins (Source: StatPearls, PubChem).