How many ATPs are produced through substrate-level phosphorlylation in cellular respiration?

Question

hcbiochem, thank-you.

:-) I hope to be a biochem major in 8 months once I graduate from senior year

Answer 1

Substrate-level phosphorylation is the direct transfer of a phosphate group from some compound onto ADP to make ATP.

In the glycolytic pathway, there are two specific steps where substrate-level phosphorylation occurs. If you're counting ATPs produced from a single glucose molecule, then 4 ATPs are produced by the substrate level phosphorylation reactions during glycolysis.

In the citric acid cycle, there is another point where substrate-level phosphorylation occurs. Again, if you're counting ATPs from a single glucose molecule, this accounts for 2 more ATPs.

So, adding those up, you have 6 ATPs produced from the metabolism of one glucose molecule by substrate-level phosphorylation reactions...

Answer 2

Glycolysis: 2 ATP, 2 NADH + H next is conversion of pyruvate to acetyl co-A: a million NADH+H (x2 for 2 molecules from each and every glucose molecule) Citric acid cycle: 1GTP=1ATP; 1FADH2, 3 NADH=H (x2) Oxidative phosphorylation: convert each and every of the NADH and FADH produced earlier into ATP a million NADH+H = 2.5 ATP subsequently 2.5x10= 25 ATP a million FADH2 = a million.5 ATP subsequently a million.5x2= 3 finished 28 ATP from oxidative phosphorylation 28 + 3= 31 from finished respiration. that's the main suitable ATP producing course yet once you opt for ATP from different biomolecules too then take a universal biochemistry e book and start up off analyzing.

Answer 3

In substrate-level phosphorylation, ATP production depends on where it occurs:

Step seven of glycolysis produces two ATP as it converts BPG (1,3-Bisphosphoglycerate) into 3PG (3-phosphoglycerate). This reaction is catalyzed by phosphoglycerate kinase.

The last step of glycolysis transfers the phosphates from two PEPs (phosphoenolpyruvate) to ADP, producing two more ATPs and two molecules of pyruvate.

ATP also results from the fifth step of the citric acid cycle, where succinyl CoA becomes succinate. This occurs when the coenzyme is released, which converts GDP to GTP, that in turn changes ADP to (2) ATP.

A total of 6 ATPs per glucose

hope this helps and good luck with your biochem major.

Answer 4

This sounds like a question from a microbiology test? I don't remember the answer but you could try looking in one of those text books. Good Luck!