Related topics: cells · immune response · cancer cells · protein

Monotremes use a unique sex gene unlike those in other mammals

Researchers from the University of Adelaide, in collaboration with the University of Melbourne, University of Queensland and Monash University, have discovered that the genetic mechanism that determines sex in monotremes ...

Zika virus uses cells' 'self-care' system to turn against host

A new study reveals the biological secret to the Zika virus's infectious success: Zika uses host cells' own "self-care" system of clearing away useless molecules to suppress the host proteins that the virus has employed to ...

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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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