Dictionary » A » ATP

ATP

Definition

noun

(biochemistry)

(1) Abbreviation for adenosine triphosphate, empirical formula: C10H16N5O13P3

(2) An organic compound composed of adenosine (an adenine ring and a ribose sugar) and three phosphate groups, hence, the name.


Supplement

ATP is a nucleotide that contains a large amount of chemical energy stored in its high-energy phosphate bonds. It releases energy when it is broken down (hydrolyzed) into ADP (or Adenosine Diphosphate). The energy is used for many metabolic processes. Hence, ATP is considered as the universal energy currency for metabolism.

ATP is produced via cellular respiration in the mitochondria and photosynthesis in chloroplasts.

Its functions are for intracellular energy transport for various metabolic processes including biosynthetic reactions, motility, and cell division. It is also used as a substrate by kinases that phosphorylate proteins and lipids, and by adenylate cyclase to produce cyclic AMP.


Word origin: from abbreviation of adenosine triphosphate.

Compare: AMP, ADP.
See also: cellular respiration.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re: Food to ATP energy?

... recommended daily intake is more than 2000 kilo calories! http://en.wikipedia.org/wiki/Food_energy#Recommended_daily_intake The daily turnover of ATP is equivalent of about 1000 kcal.

See entire post
by JackBean
Sat Jun 28, 2014 12:50 pm
 
Forum: Cell Biology
Topic: Food to ATP energy?
Replies: 1
Views: 436

Food to ATP energy?

... I also suppose some of the energy is lost during the oxidation of those nutritients as well. The rest of the energy is used to convert ATD to ATP. Now, in one of my mothers older medical books, and many links on the internet afterwards (such as this one http://www.healthvalue.net/mitochondrial_energy.html), ...

See entire post
by Viktor
Fri Jun 27, 2014 10:50 pm
 
Forum: Cell Biology
Topic: Food to ATP energy?
Replies: 1
Views: 436

Re: Increase in free energy in glycolysis

... negative (i.e. the the magnitude of the free energy is becoming greater). Thus as the chaos increases the free energy continues to increase. The ATP usage in the two steps: hexokinase making glucose-6-phosphate and PFK1 making Fructose-1,6-Bisphosphate is made to overcome the activation energy ...

See entire post
by daniel.kurz
Wed Feb 05, 2014 3:03 am
 
Forum: Molecular Biology
Topic: Increase in free energy in glycolysis
Replies: 3
Views: 1817

Re:

... question,so they probably want to know, whether you know that TCA runs aerobically only, althoughit doesn't require oxygen per se. Thus it's 200 ATPs from glycolysis (2 per 1 Glc) and could be additional 200 from TCA (1 per 1 acetyl-CoA). The TCA or Krebs cycle only occurs if the ETC(electron ...

See entire post
by caters
Mon Feb 03, 2014 4:37 am
 
Forum: Cell Biology
Topic: ATP produced by human cells in an anaerobic chamber. LOST!
Replies: 2
Views: 3383

Increase in free energy in glycolysis

... in a general biology textbook. It says that in the first 5 steps the free energy increases with each step. Two of those steps are powered by ATP, but the rest are not. In those other steps, how does the free energy increase? What powers it? Thanks.

See entire post
by cadamcross
Sat Feb 01, 2014 2:25 am
 
Forum: Molecular Biology
Topic: Increase in free energy in glycolysis
Replies: 3
Views: 1817
View all matching forum results

This page was last modified 01:26, 12 September 2010. This page has been accessed 670,255 times. 
What links here | Related changes | Permanent link