Triaglyceride with three F.A.chains of 20 carbon
how to calculate the ATP production
Plz show the steps
thank you
To calculate the ATP production from a triglyceride with three fatty acid chains of 20 carbon, you'll need to follow a few steps. Here's a breakdown of the process:
Step 1: Determine the number of carbon atoms in the triglyceride.
Since each fatty acid chain in the triglyceride has 20 carbon atoms, you need to multiply this by 3 (since there are three fatty acid chains). 20 carbon atoms x 3 = 60 carbon atoms in total.
Step 2: Calculate the number of acetyl-CoA molecules.
During the process of beta-oxidation, each pair of carbon atoms in a fatty acid chain is converted into one molecule of acetyl-CoA. Since there is one acetyl-CoA formed for every two carbon atoms, we divide the total number of carbon atoms (60) by 2. This gives us 30 acetyl-CoA molecules.
Step 3: Determine the ATP yield from acetyl-CoA.
For every acetyl-CoA molecule entering the citric acid cycle (also known as the Krebs cycle or TCA cycle), three molecules of NADH, one molecule of FADH2, and one molecule of GTP (which is later converted to ATP) are produced.
a) NADH: Multiply the number of acetyl-CoA molecules (30) by the three molecules of NADH produced per acetyl-CoA. This gives us a total of 90 NADH molecules.
b) FADH2: Multiply the number of acetyl-CoA molecules (30) by the one molecule of FADH2 produced per acetyl-CoA. This gives us a total of 30 FADH2 molecules.
c) GTP: Multiply the number of acetyl-CoA molecules (30) by the one molecule of GTP produced per acetyl-CoA. This gives us a total of 30 GTP molecules.
Step 4: Convert NADH and FADH2 to ATP.
Both NADH and FADH2 go through the electron transport chain, which produces ATP. In oxidative phosphorylation, each NADH molecule generates approximately 2.5 ATP, while each FADH2 molecule generates approximately 1.5 ATP.
a) NADH: Multiply the number of NADH molecules (90) by 2.5 ATP per NADH. This gives us a total of 225 ATP.
b) FADH2: Multiply the number of FADH2 molecules (30) by 1.5 ATP per FADH2. This gives us a total of 45 ATP.
Step 5: Calculate the total ATP production.
To get the total ATP production, add up the ATP produced from NADH (225 ATP), ATP produced from FADH2 (45 ATP), and ATP produced from GTP (which is equivalent to ATP). The total ATP production from one molecule of the given triglyceride is 225 + 45 + 30 = 300 ATP.
Therefore, the ATP production from the given triglyceride is 300 ATP.