Question about the synthesis of fatty acids

In summary, fatty acids are essential for the body as they make up the cell membrane, provide energy storage, and regulate cellular processes. They are synthesized through a process involving enzymes and can be disrupted by various factors, potentially causing health issues. The key enzymes involved in fatty acid synthesis are acetyl-CoA carboxylase, fatty acid synthase, and acyl carrier protein, and the process is regulated by hormonal signals, nutrient availability, and cellular energy levels.
  • #1
samy4408
62
9
Hello , in the course of fatty acids synthesis the professor said that after the repetition of the cycle 7 times we end up with a 16 carbon chain
and he added that all the carbons came from acetyl-COA except for one .
i didn't understand the last one , what is the carbon that don't come from acetyl-COA ?
 
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  • #2
In even-chained fatty acids, this also is from AcCoA.
In odd-chained (e.g. C15 or C17), however, the initial element is Propionyl-CoA.

HTH
 
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Likes jim mcnamara and samy4408
  • #3
thanks a lot !
 

FAQ: Question about the synthesis of fatty acids

1. What is the process of synthesizing fatty acids?

The process of synthesizing fatty acids is known as fatty acid synthesis or lipogenesis. It involves the conversion of carbohydrates and proteins into fatty acids, which are then used to create triglycerides and other lipid molecules.

2. What is the role of enzymes in fatty acid synthesis?

Enzymes play a crucial role in fatty acid synthesis by catalyzing the various steps of the process. Some of the key enzymes involved are acetyl-CoA carboxylase, fatty acid synthase, and malonyl-CoA decarboxylase.

3. What are the sources of fatty acids for synthesis?

The primary sources of fatty acids for synthesis are carbohydrates and proteins. Carbohydrates are broken down into glucose, which is then converted into acetyl-CoA, the building block for fatty acids. Proteins can also be converted into acetyl-CoA through the process of gluconeogenesis.

4. What are the end products of fatty acid synthesis?

The end products of fatty acid synthesis are triglycerides and other lipid molecules. These molecules are essential for energy storage, cell membrane structure, and hormone production.

5. What are the key factors that regulate fatty acid synthesis?

Fatty acid synthesis is regulated by a variety of factors, including hormonal signals, nutrient availability, and the activity of key enzymes. Insulin, for example, stimulates fatty acid synthesis, while glucagon and epinephrine inhibit it. Additionally, the levels of key substrates and cofactors, such as acetyl-CoA, ATP, and NADPH, can also influence the rate of fatty acid synthesis.

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