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How many ATP would be produced from the oxidation of a 15 carbon monounsaturated fatty acid?...

How many ATP would be produced from the oxidation of a 15 carbon monounsaturated fatty acid?
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Answer #1

A 15 carbon monounsaturated fatty acid produces 90.5 molecules of ATP. 15 carbon monounsaturated fatty acid is same way with 14 carbon monounsaturated fatty acid until three carbon propionyl CoA is produced which is ultimately converted into succinyl-CoA which enters into krebs cycle. Due to presence of one unsaturated beta carbon, one step is skipped. No FADH2 is produced on that step. So, One less FADH2 is produced in monounsaturated fatty acid.

Reaction

ATP yield

ATP consumed

Activation of fatty acid to fatty acyl CoA

TCA cycle

Oxidation of 6 acetyl CoA + 1 Succinyl COA

7 GTP= 7

6 FADH2 = 1.5×6 = 9

21 NADH2 = 2.5×21 = 52.5

-2

6 round of β-Oxidation cycle

Oxidation of 6 FADH2

1.5×6 = 9

Oxidation of 6 NADH

2.5×6 = 15

Total ATP produced

92.5-2 = 90.5

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