2022年9月13日 · A receptor is a protein molecule in a cell or on the surface of a cell to which a substance can bind, causing a change in the activity of that particular cell. This article explains how cell receptors work, their role in the human body, and their significance.

2024年9月19日 · When a water-soluble ligand binds to a cell-surface receptor, it activates the receptor, initiating a signal transduction pathway that alters cellular function. The 3 types of cell-surface receptors include G protein–coupled receptors (GPCRs), ion channel receptors, and enzyme-linked receptors.

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.

As discussed in Chapter 12, some neurotransmitter receptors are ligand-gated ion channels that directly control ion flux across the plasma membrane. Other cell surface receptors, including the receptors for peptide hormones and growth factors, act instead by regulating the activity of intracellular proteins.

Subsequent to binding of ligand, the receptor serves a transducing function, and signals to intracellular portions of itself, or other associated proteins, that ligand has been bound. This, in turn, activates specific effector pathways resulting in metabolic and structural changes in the cell that constitute the signature effect of the agonist (1).

2024年4月1日 · Receptors are specialized protein structures that play a pivotal role in cellular signal transduction. These proteins are designed to specifically bind to certain molecules, termed ligands. Ligands encompass a broad range of molecules, from simple inorganic entities to complex proteins, hormones, and neurotransmitters produced by organisms.

2025年4月4日 · Receptor proteins are a special class of proteins that are embedded in the phospholipid bilayer of the plasma membrane. They play a crucial role in cellular communication by receiving chemical signals from the environment and transmitting them into the cell, thus allowing cells to respond to their surroundings.

Receptors are defined as specialized structures found in the cell membrane. They are mainly composed of proteins, which bind to ligands and cause responses to the immune system. These receptors are found in various immune cells, including …

2008年7月1日 · Receptors are proteins situated in the cell membrane or at an intracellular site that specifically recognize and bind molecules known as ‘ligands’. 1, 2 A ligand is so-called because it ligates itself to the receptor protein. The ligand may be a neurotransmitter, a hormone, a drug or a growth factor.

2001年11月29日 · Thus the studies within range from G protein-coupled surface receptors, to the delivery of antisense DNA inside living cell systems. A distinguished team of contributors cover these diverse areas, identifying any difficulties likely to be encountered and appropriate steps to overcome them.