Dictionary » H » Hydrogen-transporting ATP synthase

Hydrogen-transporting ATP synthase

Definition

noun

A membrane enzyme that allows the diffusion of protons (hydrogen ions) through its proton channel component while using the energy released from the proton gradient to produce ATP this time through its synthase domain.


Supplement

This enzyme is present in bacterial cell membrane, in inner mitochondrial membrane, and in thylakoid membrane in chloroplasts.

It consists of two major segments: Fo portion, the transmembrane proton channel and F1 portion, the synthase domain. The proton channel component allows the diffusion of protons (hydrogen ions) from an area where there are more hydrogen ions to an area where there are less hydrogen ions due to a proton gradient. As the proton (H+ ion) moves down the concentration gradient this moves the enzyme in a spinning motion, which brings ADP and inorganic phosphate together to form a bond, thus creating ATP molecule. The resulting ATP molecule is released so that a new ADP molecule can enter for another phosphorylation.


See also: chemiosmosis


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



Results from our forum


I need some help understanding mitochondria

... a cell in the mitochondria? Why & how do ATP synthase in the inner membrane and use the concentration ... gradient? What is an electron transport chain? Why is hydrogen released into the matrix of a mitochondria from ...

See entire post
by fightclub
Sat Oct 06, 2012 8:44 pm
 
Forum: Cell Biology
Topic: I need some help understanding mitochondria
Replies: 1
Views: 3656

Role of membranes in synthesis of ATP in cellular respiratio

... play a huge role in the synthesis of ATP in the mitochondria, the power house of the ... generated from its reactions to regulate hydrogen levels. ATP production occurs because of ... ions across the membrane using the ATP synthase (a transport protein). This protein uses ...

See entire post
by mkbeast99
Wed Aug 15, 2012 11:12 pm
 
Forum: Molecular Biology
Topic: Role of membranes in synthesis of ATP in cellular respiratio
Replies: 1
Views: 13743

Chemiosmosis, the movement of hydrogen ions to make ATP, was

A.Hydrogen ions build up as a result of the glycolysis. B. ... low concentrations. C. A fewer number of molecules of ATP are formed in cellular respiration due to chemiosmosis ... of hydrogen ions across the membrane through ATP synthase F. Glucose is oxidized in cellular respiration ...

See entire post
by rurutashy
Thu May 31, 2012 12:17 am
 
Forum: Cell Biology
Topic: Chemiosmosis, the movement of hydrogen ions to make ATP, was
Replies: 1
Views: 6518

Protons in Cellular Respiration

... from? (The proton gradient is formed to make ATP through ATP synthase) I know in plants the proton gradient is made by splitting water (hydrogen specifically). Does it come from NADH & FADH2 in ...

See entire post
by jellyksong
Fri Apr 22, 2011 5:50 pm
 
Forum: Cell Biology
Topic: Protons in Cellular Respiration
Replies: 1
Views: 2544

Re: Question about metabolism and some chemical things?

... end of this process you have a net gain of 2 ATP molecules, as well as your end product - 2 molecules ... (turning back into NAD). Remember that hydrogen is 1 proton (H+) and 1 electron (e-). The ... protein channel. This protein is called ATP synthase because it makes ATP. When H+ flows through ...

See entire post
by sharstar25
Fri Mar 18, 2011 9:39 pm
 
Forum: Molecular Biology
Topic: Question about metabolism and some chemical things?
Replies: 7
Views: 7805
View all matching forum results

This page was last modified 10:31, 23 June 2009. This page has been accessed 7,845 times. 
What links here | Related changes | Permanent link