Multiple cell surface receptors

"Multiple cell surface receptors" is a general term referring to a broad class of transmembrane proteins embedded in the plasma membrane of cells[1][4][7]. These proteins recognize and bind extracellular ligands (such as hormones, neurotransmitters, growth factors, or cytokines) and transmit signals into the cell to regulate a vast array of functions, including cell growth, differentiation, immune response, and cell death[1][4]. Major types include G protein–coupled receptors (GPCRs), ion channel receptors, and enzyme-linked receptors such as receptor tyrosine kinases[4][7][10]. The designation "multiple" indicates this entry is not specific to a particular molecular species and cannot be mapped to a unique canonical form; instead, it encompasses an entire family of structurally diverse but functionally analogous molecules. Drugs and biologics targeting these receptors are central to modern therapeutics, with up to 35% of FDA-approved drugs acting at GPCRs alone[9]. However, individual safety and biomarker profiles depend on the specific target(s) within this broad group. This entry is considered **incorrect** for precise molecular targeting: it lacks the specificity required to refer to a single, actionable therapeutic target and instead is a broad, catch-all category for several molecular entities[1][4][7].

Other names

cell surface receptorsmembrane receptorstransmembrane receptors

Ligand binding triggers intracellular signaling cascades, including second messenger production, phosphorylation, and recruitment of signaling proteins[1][4][10].