: a cellular entity (as a beta-receptor or alpha-receptor) that is a postulated intermediary between a chemical agent (as a neurohormone) acting on nervous tissue and the physiological or pharmacological response

2018年2月27日 · A receptor is a protein which binds to a specific molecule. The molecule it binds is known as the ligand. A ligand may be any molecule, from inorganic minerals to organism-created proteins, hormones, and neurotransmitters. The ligand binds to the ligand-binding site on the receptor protein.

In biochemistry and pharmacology, receptors are chemical structures, composed of protein, that receive and transduce signals that may be integrated into biological systems. [1] These signals are typically chemical messengers [nb 1] which bind to a receptor and produce physiological responses such as change in the electrical activity of a cell.

2024年4月1日 · Definition of Receptor. A receptor is a specialized protein molecule that selectively recognizes and binds to specific ligands, leading to cellular responses or signal transduction within the cell. Types of Receptors. Receptors are specialized protein structures integral to cellular communication and response mechanisms.

A receptor, for example the eye, receives and transforms stimuli into sensory nerve impulses. Receptors vary in complexity from the end of a sensory neurone to a sense cell and complex organs such as the eye. They may occur externally (EXTEROCEPTOR) or internally (ENTEROCEPTOR) or be positioned to receive body movement (PROPRIOCEPTOR).

RECEPTOR definition: 1. a nerve ending that reacts to a change, such as heat or cold, in the body by sending a message…. Learn more.

2022年7月24日 · A molecular structure within a cell or on the surface characterised by selective binding of a specific substance and a specific physiologic effect that accompanies the binding, for example, cell surface receptors for peptide hormones, neurotransmitters, antigens, complement fragments and immunoglobulins and cytoplasmic receptors for steroid ...

RECEPTOR meaning: 1. a nerve ending that reacts to a change, such as heat or cold, in the body by sending a message…. Learn more.

Definition. Receptors are specialized protein molecules located on the surfaces of cells that bind to specific signaling molecules, such as hormones or neurotransmitters, triggering a cellular response.

Receptors are proteins on the surface of cells that are specifically designed to detect and respond to signals from outside the cell. They act as 'gatekeepers,' allowing certain molecules or messages to enter the cell while blocking others.