ADENOSINE TRIPHOSPHATE

(ATP)ədĕnˈəsēn trīˌfŏsˈfāt, organic compound composed of adenine, the sugar ribose, and three phosphate groups. ATP serves as the major energy source within the cell to drive a number of biological processes such as photosynthesis, muscle contraction, and the synthesis of proteins. It is broken down by hydrolysis to yield adenosine diphosphate (ADP), inorganic phosphorus, and energy. ADP can be further broken down to yield adenosine monophosphate (AMP), additional phosphorus, and more energy. When the phosphorus and energy are immediately used to drive other reactions, such as the synthesis of uridine diphosphate (UDP), an RNA precursor, from uridine monophosphate (UMP), the pair of reactions are said to be coupled. New ATP is produced from AMP using the energy released from the breakdown of fuel molecules, such as fats and sugars.

Extracellularly, ATP has been found to act as a neurotransmitter. ATP receptors are widespread through the body. On its own it is known to have effects in the arteries, intestines, lungs, and bladder. It is also often released in tandem with other neurotransmitters, perhaps to add chemical stability. See phosphorylation.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Adenosine Triphosphate
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books on: Adenosine Triphosphate  - 221 results

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...fatigue and, 455 -456 Hydrolysis, acetylcholinesterase and, 235 -236 adenosine triphosphate and, 115 heat, adenosine triphosphate and, 62 mechanism, adenosine triphosphate and, 12 -15 rate, adenosine triphosphate and, 87 5-Hydroxytryptamine...
...of an organism that makes it better suited to its environment. Adenosine diphosphate (ADP) See adenosine triphosphate. Adenosine triphosphate (ATP) A nucleotide that is of fundamental importance as a carrier of energy in all organisms...
...5-phosphorimidazolide (5-ImpA), 261 Adenosine triphosphate, 224, 254 in glycolytic pathway, 194 pathways...from fatty acid oxidation, 333, 335 -336 Adenosine triphosphate-adenosine diphosphate system, 115-116, 434f ATP...
...Fredholm et al., 1999). Adenosine is produced by all tissues as a function of the breakdown of adenosine triphosphate during cellular metabolism and...all cells have receptors for adenosine. The widespread effects of adenosine...
...of phos phocreatine and adenosine triphosphate in resting muscle during...increase in the radioactive adenosine triphosphate and a decrease in the residual...degree of increase in liver adenosine triphosphate which follows the injection...
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journal articles on: Adenosine Triphosphate  - 89 results

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...The estimation of the bacterial numbers with the adenosine triphosphate (ATP) bioluminescence method is known to be...as sensitive as the immunomagnetic separation/adenosine triphosphate (IMS-ArP) method. b. they are not as accurate...
...was to determine if a rapid adenosine triphosphate (ATP) bioluminescence method...analysis would be desirable. The adenosine triphospate (ATP) bioluminescence...assay is the quantification of adenosine triphosphate, which is an energy-rich...
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magazine articles on: Adenosine Triphosphate  - 49 results

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...by the cells universal energy currency, ATP (adenosine triphosphate), into linear movement along the cells microtubule...ATP but rather with its cousin, GTP (guanosine triphosphate). As with the energy released during the ATP...
...through the curves and narrows of the bodys circulatory system. As they flex, the cells release small amounts of adenosine triphosphate (ATP), an energy-storing molecule, into the bloodstream. Earlier research had established that ATP can...
...generate energy from reactions involving adenosine triphosphate (AIP), phosphocreatine (PCr), adenosine diphosphate (ADP), and creatine...produced through a reaction with adenosine triphosphate. SAMe is not an herb but is commercially...
...transport chain (ETC), is the bodys primary means of adenosine triphosphate (ATP) generation. ATP is the principal molecule...reactions that are ultimately responsible for converting adenosine diphosphate (ADP) into ATP at the expense of 0...
...calcium, prostaglandin antagonism, and adenosine receptor antagonism. In vitro, it has...enzyme that catalyzes the conversion of adenosine triphosphate ATP to cyclic-3-5-adenosine monophosphate (cyclic AMP). Increased...
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newspaper articles on: Adenosine Triphosphate  - 18 results

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...organelles called mitochondria, structures within eukaryotic cells that convert chemical energy from food into adenosine triphosphate (ATP), used as the cells source of chemical energy. In contrast to nuclear DNA -- the double-helix...
...Together, we are investigating which members of the purine family of receptors, which bind a chemical called adenosine triphosphate (ATP), are involved in the secretion of digestive enzymes by the pancreas and how these receptors change in...
...producesnaturally in the liver and is used to turn the glucose from the food we eatinto an energy-rich compound called Adenosine Triphosphate. This is essential for fuelling the bodys vital processes, such as breathing,muscle contraction and digestion...
...the animal is killed, the muscle tries to maintain normal activity. To do so, it needs energy in the form of adenosine triphosphate, which it obtains through the breakdown of glycogen through post-mortem glycolysis. A by-product of this...
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encyclopedia articles on: Adenosine Triphosphate  - 30 results

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ADENOSINE TRIPHOSPHATE (ATP) den sen tri fos fat, organic...broken down by hydrolysis to yield adenosine diphosphate (ADP), inorganic phosphorus...can be further broken down to yield adenosine monophosphate (AMP), additional...
ADENOSINE DIPHOSPHATE see adenine ; adenosine triphosphate . ____________________ Copyright 2009 Columbia University Press. Used with the permission of Columbia University Press. All rights reserved.
ADENOSINE MONOPHOSPHATE (AMP) den sen mon fos fat, organic compound composed...phosphate unit. AMP is one of the possible products of the hydrolysis of adenosine triphosphate (ATP) and is therefore important in the transfer of chemical energy...
...bonded with from one to three phosphoric acid units, yielding the three nucleotides adenosine monophosphate , adenosine diphosphate, and adenosine triphosphate . These adenine derivatives perform important functions in cellular metabolism. Adenine...
...cytidine diphosphate), and CTP (cytidine triphosphate). Analogous nucleosides and nucleotides...donate one of its phosphate groups to adenosine diphosphate (ADP) to form adenosine triphosphate (ATP), an extremely important intermediate...
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