Multiple membrane-embedded proteins

The entry "Multiple membrane-embedded proteins" is not a specific molecule or receptor, but rather a generic grouping referring to the large and highly diverse class of proteins embedded in biological membranes, including but not limited to ion channels, G protein-coupled receptors (GPCRs), transport proteins, and various types of enzymes and receptors[1][3][5][4]. These proteins play essential biological roles—such as mediating signal transduction, transporting molecules across membranes, catalyzing enzymatic reactions at the cell surface, enabling cell-cell recognition, and anchoring the cytoskeleton[5][6]. Integral membrane proteins specifically refer to proteins permanently anchored in the lipid bilayer, and include both single-pass and multipass (polytopic) proteins[4]. This class is a major focus in drug discovery, as approximately half of all therapeutic drugs target membrane proteins; however, the term "Multiple membrane-embedded proteins" is not sufficiently precise for use as a canonical target name in pharmacology or biomedical research[5].