News tagged with receptors

Related topics: cells · protein · brain · molecules · nerve cells

Why do we fall asleep when bored?

Humans often defy sleepiness and stay awake when attention is necessary,yet experience an inescapable desire to sleep in boring situations. The brain mechanisms governing the regulation of sleep by cognitive and emotional ...

Sep 29, 2017
popularity71 comments 0

Uncovering why psoriasis recurs

New research by investigators at Brigham and Women's Hospital and Rockefeller University helps address a longstanding question about the inflammatory skin condition psoriasis: Why do skin lesions that have resolved with therapy ...

Sep 28, 2017
popularity12 comments 0

Receptor (biochemistry)

In biochemistry, a receptor is a protein molecule, embedded in either the plasma membrane or cytoplasm of a cell, to which a mobile signaling (or "signal") molecule may attach. A molecule which binds to a receptor is called a "ligand," and may be a peptide (such as a neurotransmitter), a hormone, a pharmaceutical drug, or a toxin, and when such binding occurs, the receptor undergoes a conformational change which ordinarily initiates a cellular response. However, some ligands merely block receptors without inducing any response (e.g. antagonists). Ligand-induced changes in receptors result in physiological changes which constitute the biological activity of the ligands.

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