G proteins, also known as guanosine nucleotide-binding proteins, are a family of proteins involved in transmitting signals from a variety of different stimuli outside a cell into the inside of the cell. G proteins function as molecular switches. Their activity is regulated by factors that control their ability to bind to and hydrolyze guanosine tr...
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http://en.wikipedia.org/wiki/G_protein
(from the article `Gilman, Alfred G.`) American pharmacologist who shared the 1994 Nobel Prize for Physiology or Medicine with American biochemist Martin Rodbell for their separate ... American biochemist who was awarded the 1994 Nobel Prize for Physiology or Medicine for his discovery in the 1960s of natural signal transducers ... [...
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http://www.britannica.com/eb/a-z/g/1
<cell biology, molecular biology> Intracellular membrane-associated proteins activated by several (e.g., beta adrenergic) receptors. ... They serve as second messengers or transducers of the receptor-initiated response to intracellular elements such as enzymes to initiate an effect. They are also mediators of activated cell-surface receptors ...
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(1) See GTP-binding proteins. (2) The spike glycoprotein of vesicular stomatitis virus. This has been an important protein for investigation of membrane transport in eukaryotic cells.
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Type: Term Synonyms: G proteins
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http://www.medilexicon.com/medicaldictionary.php?t=72980
G protein: These molecules have been described as 'biological traffic lights.' Located inside the cell, G proteins are able respond to signals outside the cell -- light, smell, hormones -- and translate (transduce) these signals into action within the cell. Alfred G. Gilman and Martin Rodbell shared the 1994 Nobel Prize in Physiology or Medicine fo...
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http://www.medterms.com/script/main/art.asp?articlekey=6517
any of a family of similar proteins of the intracellular portion of the plasma membrane that bind activated receptor complexes and cause alterations in the movement of ions across plasma membrane channels, thus coupling cell surface receptors to intracellular responses. Some G proteins are named for their activities; for ...
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See protein kinase studies and second messenger neurotransmission.
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http://www.smithsrisca.demon.co.uk/memory-glossary.html
No exact match found.
