Receptor co-complex

Receptor co-complexes represent the physical and chemical assembly of a receptor protein bound to one or more partner molecules, such as endogenous ligands, ions, or pharmacological agents (Nature Education, 2014). These assemblies are the functional units of cellular communication, where the binding event typically initiates or inhibits a biological signal through conformational changes (PubMed, PMID: 28253446). In the field of drug discovery, the term is frequently used to describe high-resolution structures obtained through X-ray crystallography or cryo-electron microscopy that visualize a drug molecule nested within its target's binding site (Protein Data Bank, 2023). These structural insights are indispensable for structure-based drug design (SBDD), allowing researchers to optimize molecular fit, affinity, and selectivity for a wide range of therapeutic targets (NIH, 2021). However, "Receptor co-complexes" is a broad structural classification rather than a specific, individual therapeutic target like a particular enzyme or ion channel. Because it refers to a general state of molecular association, it does not have a unique genetic sequence or a specific role in a single disease pathway. Instead, it serves as a conceptual framework for understanding the biophysical interactions that underlie all receptor-based therapeutics.

Other names

Receptor-ligand complexProtein-ligand complexCo-crystal structureHolo-receptorMultimeric receptor complex

Not applicable as this refers to a structural state rather than a specific therapeutic target.