News tagged with cell surface

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

Molecular structure reveals how HIV infects cells

In a long-awaited finding, a team of Chinese and US scientists has determined the high-resolution atomic structure of a cell-surface receptor that most strains of HIV use to get into human immune cells. The researchers also ...

Sep 12, 2013
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Deciphering the enemy's ID

Immunologists at LMU have come up with a new technique that can be used both to fight tumors and to treat autoimmune diseases. A new grant from the Federal Ministry for Education and Research will enable the method to be ...

Aug 13, 2013
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Could turning on a gene prevent diabetes?

Type 2 diabetes accounts for 90 % of cases of diabetes around the world, afflicting 2.5 million Canadians and costing over 15 billion dollars a year in Canada. It is a severe health condition which makes body cells incapable ...

Jul 22, 2013
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New marker substance for cancer cells

Scientists from ETH Zurich have developed a new substance that enables certain tumour types to be rendered visible in high resolution using positron emission tomography. The so-called tracer has successfully been tested in ...

Jul 04, 2013
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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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