What is the equation for oxidative phosphorylation?
What is the equation for oxidative phosphorylation?
How Free-Energy Currency Works
| phosphorylation | ADP3- + HPO42- + H+ –> ATP4- + H2O | DGo= +30.5 kJ (nonspontaneous) |
|---|---|---|
| oxidation | NADH –> NAD+ + H+ + 2e- | DGo= -158.2 kJ (spontaneous) |
| reduction | 1/2 O2 + 2H+ + 2e- –> H2O | DGo= -61.9 kJ (spontaneous) |
What are the net products of oxidative phosphorylation?
Two net ATP are made in glycolysis, and another two ATP (or energetically equivalent GTP) are made in the citric acid cycle….ATP yield.
| Stage | Direct products (net) | Ultimate ATP yield (net) |
|---|---|---|
| Citric acid cycle | 2 ATP/GTP | 2 ATP |
| 6 NADH | 15 ATP | |
| 2 FADH 2 | 3 ATP | |
| Total | 30-32 ATP |
How many net ATP are made in oxidative phosphorylation?
Oxidative phosphorylation produces 24–28 ATP molecules from the Kreb’s cycle from one molecule of glucose converted into pyruvate. Two theoretical approaches applied to the oxidative phosphorylation are metabolic control analysis and nonequilibrium thermodynamics.
What is the end product of oxidative phosphorylation?
ATP+
-The transfer of an electron to molecular oxygen combines with H+ to form water is marked as an end product in the oxidative phosphorylation pathway. So, the correct answer is, ‘ATP+H2O.
Which stage is oxidative phosphorylation occur?
Oxidative phosphorylation, the process where electron transport from the energy precursors from the citric acid cycle (step 3) leads to the phosphorylation of ADP, producing ATP. This also occurs in the mitochondria.
What is the final electron acceptor during oxidative phosphorylation?
oxygen
Given its greater availability in the atmosphere, elemental oxygen is used as the final electron acceptor in oxidative phosphorylation.
What are the reactants and products of the oxidative phosphorylation?
Overall, the process produces the 2 pyruvate plus 2 molecules of water, 2 ATP, 2 molecules of NADH, and 2 hydrogen ions (H+). The NADH carries electrons to the oxidative phosphorylation step of cellular respiration, which occurs inside of the mitochondrion.
How much water is produced in oxidative phosphorylation?
Two molecules
Two molecules of water are produced as O2 is reduced in the electron transport chain and accepts hydrogen ions.
How is ATP made in oxidative phosphorylation?
Hydrogen ions in the matrix space can only pass through the inner mitochondrial membrane through a membrane protein called ATP synthase. As protons move through ATP synthase, ADP is turned into ATP. The production of ATP using the process of chemiosmosis in mitochondria is called oxidative phosphorylation.
How do you calculate net ATP yield?
To obtain the energy yield it is necessary to calculate that net ATP yield which is given by the difference between the total ATP produced and the ATP consumed: 1 FADH2 produces 2 ATP and 1 NADH produces 3 ATP in the election transport chain.
What is the final electron acceptor in oxidative phosphorylation?
What are the final products of the electron transport chain and oxidative phosphorylation?
The end products of the electron transport chain are water and ATP. A number of intermediate compounds of the citric acid cycle can be diverted into the anabolism of other biochemical molecules, such as nonessential amino acids, sugars, and lipids.
What is oxidative phosphorylation and how does it work?
Oxidative phosphorylation starts with the arrival of 3 NADH and 1 FADH from the citric acid cycle, which shuttle high energy molecules to the electron transport chain. NADH transfers its high energy molecules to protein complex 1, while FADH transfers its high energy molecules to protein complex 2.
How do uncouplers inhibit oxidative phosphorylation?
Uncouplers inhibit oxidative phosphorylation. They ‘uncouple’ the ETC from oxidative phosphorylation. The ETC remains intact and electrons are transferred to Oto 2
How is the oxidation of glycerol 3-phosphate back to DHAP catalyzed?
The oxidation of glycerol 3-phosphate back to DHAP is catalyzed by a mitochondrial membrane bound isoenzyme of glycerol-3-phosphate dehydrogenase. The oxidation is coupled to reduction of a FAD prosthetic group of the mitochondrial enzyme to FADH2. Reduced FADH2transfers it electrons to CoQ via the ETC.
What is the process of NADH oxidation?
The process of NADH oxidation leads to the pumping of protons (single positively-charged hydrogen atoms denoted as H) through protein complex 1 from the matrix to the intermembrane space. The electrons that were received by protein complex 1 are given to another membrane-bound electron carrier called ubiquinone or Q.
