Cell membrane and protein hydration shell

The cell membrane and protein hydration shell represent the fundamental biophysical environment surrounding biological macromolecules and defining cellular boundaries. The hydration shell consists of a structured layer of water molecules hydrogen-bonded to the surface of proteins, which is essential for maintaining their three-dimensional structure and facilitating the dynamics required for enzymatic activity and molecular recognition (Ball, 2017; Pal & Zewail, 2004). The cell membrane is a semi-permeable lipid bilayer that organizes cellular components and provides a matrix for membrane-bound proteins (Alberts et al., 2002). While these structures are critical for life, they are generally not considered specific therapeutic targets in modern pharmacology. Instead, they serve as the medium through which drugs must pass or the environment that influences the binding of drugs to specific receptors or enzymes. Historically, theories of general anesthesia suggested that drugs might act by perturbing these environments, though contemporary research focuses on specific protein-ligand interactions (Franks, 2008).

Other names

Biological waterHydration layerSolvation shellPlasma membrane environmentCellular hydration environment

Modulation of the biophysical properties of the solvent environment or lipid bilayer to influence protein conformation, stability, and function.