Lipid bilayer phase

Lipid/membrane phases refer to the physical states that lipid molecules adopt within biological membranes, such as the lipid bilayer. The most well-studied phases are the gel (solid-ordered) phase, liquid-disordered phase, and liquid-ordered phase (associated with "lipid rafts"), as well as non-lamellar phases like the hexagonal (HII) phase. At physiological temperatures, membranes generally exhibit a fluid (liquid-disordered) phase, allowing for lateral mobility of lipids and membrane proteins, essential for biological processes such as signaling, trafficking, and fusion[1][3][5][7]. The specific phase behavior of a membrane depends on lipid composition (acyl chain length, degree of saturation, presence of cholesterol), temperature, pH, and other factors, affecting membrane properties like fluidity, permeability, protein clustering, and the potential for phase separation into distinct domains[1][3][5][6][7]. These phase properties are critical for proper membrane function but are not discrete molecular targets like enzymes, receptors, or transporters; rather, they are emergent properties of lipid mixtures forming a membrane[3][5][6]. Therefore, "lipid/membrane phases" is not a valid therapeutic target, but understanding membrane phase behavior is crucial for drug development, as some drugs alter or depend on phase properties for their effects or delivery[3][5][6]. Note: This entry is flagged as "is_incorrect: true" because "lipid/membrane phases" is not a distinct molecule, protein, or gene target, but a physical property of lipid assemblies, and thus does not fit standard criteria for druggable or disease-linked molecular targets.

Other names

Lipid phaseMembrane phaseLipid bilayer phasesMembrane lipid phaseLiquid-ordered phaseLiquid-disordered phaseGel phaseLamellar phaseHexagonal phase