Caffeine: Difference between revisions

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New page: ==Caffeine == <StructureSection load='1stp' size='340' side='right' caption='Caption for this structure' scene=''> This is a default text for your page '''Caffeine'''. Click above on '''ed...
 
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You may include any references to papers as in: the use of JSmol in Proteopedia <ref>DOI 10.1002/ijch.201300024</ref> or to the article describing Jmol <ref>PMID:21638687</ref> to the rescue.
You may include any references to papers as in: the use of JSmol in Proteopedia <ref>DOI 10.1002/ijch.201300024</ref> or to the article describing Jmol <ref>PMID:21638687</ref> to the rescue.


== Adenosine is an inhibitory neurotransmitter, which promotes sleep and inhibits arousal. It has two components; an adenine nucleotide and a ribose sugar. Adenosine is a polar molecule and is water soluble. Within the brain, concentration of this neuromodulator increases every hour. Adenosine binds extracellularly to G-protein and induces multiple effects. The G-protein is composed of 7 alpha helices, which provide its secondary structure, and is a transmembrane protein. As adenosine receptors bind G-protein, neural activity begins to decrease and the person feels fatigued and sleepy. A2A receptor is one of many adenosine G protein-coupled receptors. ==
== Adenosine ==


== Caffeine is a derivative of adenosine and is also called Trimethylxanthine. It is composed of purines; structurally it is polar, and water soluble. They antagonize or inhibit many of the adenosine receptors, like the A1 receptor mentioned above. Caffeine affects neurons and glial cells in the brain by binding to the same location that adenosine would bind and then induce a cascade of enzymatic downstream effects. ==
Adenosine is an inhibitory neurotransmitter, which promotes sleep and inhibits arousal. It has two components; an adenine nucleotide and a ribose sugar. Adenosine is a polar molecule and is water soluble. Within the brain, concentration of this neuromodulator increases every hour. Adenosine binds extracellularly to G-protein and induces multiple effects. The G-protein is composed of 7 alpha helices, which provide its secondary structure, and is a transmembrane protein. As adenosine receptors bind G-protein, neural activity begins to decrease and the person feels fatigued and sleepy. A2A receptor is one of many adenosine G protein-coupled receptors.
 
== Caffeine ==
 
Caffeine is a derivative of adenosine and is also called Trimethylxanthine. It is composed of purines; structurally it is polar, and water soluble. They antagonize or inhibit many of the adenosine receptors, like the A1 receptor mentioned above. Caffeine affects neurons and glial cells in the brain by binding to the same location that adenosine would bind and then induce a cascade of enzymatic downstream effects.


== Relevance ==
== Relevance ==