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Fatty Acid Oxidation Title slide - fatty acid oxidation, beta oxidation.

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Presentation on theme: "Fatty Acid Oxidation Title slide - fatty acid oxidation, beta oxidation."— Presentation transcript:

1 Fatty Acid Oxidation Title slide - fatty acid oxidation, beta oxidation

2 The Knoop experiment that proved beta oxidation

3 Fatty acid must be activated in an ATP-dependent reaction
Fatty acid must be activated in an ATP-dependent reaction. An acyladenylate is formed as an intermediate - anhydride between the fatty acid and AMP. This is a two step reaction; the activated acyl group from the acyl adenylate is transferred to CoA.

4 Carnithine is required for the transport of the acyl group into the mitochondria where beta oxidation occurs.

5 The carrier is located in the membrane and vectorially transports the acyl group.

6 The reaction sequence in fatty acid oxidation - one cycle; this is repeated and two carbons are removed at a time.

7 The first reaction is catalyzed by acyl~CoA dehydrogenase, a flavin-depedent enzyme.

8 Further steps

9 In the second reaction the dienoylCoA is reduced using NADPH.

10 Thiolase transfers to a C-two unit to CoA

11 Ketone body - acetoacetate is reduced to beta-hydroxdybutyrate.

12 Hypoglcin inhibits the acyl~CoA dehydrogenase that ties up the FAD.

13 Reaction mechanism

14 How to handle complications

15


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