Protein and Lipid Catabolism

Question 1

What is the Protein Catabolism, and what is it used for?

Answer 1

• Proteins from diet are broken down into aa.
• Used for protein synthesis.
• Extra aa can be used for energy

Question 2

What does the 1st step of Deamination do?

Answer 2

• Removal of amino group.
• Results in ammonia - basic pH (alkaline).
• Toxic in bloodstream, can cause alkaloise.
• Discharged in urine as urea.

Question 3

What does the 2nd step: product of deamination proceeds through the respiration pathway do?

Answer 3

• Entry point depends on the aa.
• Energy yield is dependent on the entry point.
• Entry points are all later than glucose thus the ATP yield will always be less.

Question 4

What does the Lipid Catabolism break down into?

Answer 4

It breaks down into glycerol and fatty acids.

Question 5

What are the different Pathways?

Answer 5

It can split to two pathways Glycerol and Fatty Acids:
- Glycerol gets passed through to Glycolysis.
- Fatty Acids would get passed through to Kreb Cycle.

Question 6

What is the ATP Calculation Formula?

Answer 6

NADH = # clevage chain x 2.5
FADH2 = # clevage chain x 1.5
(NADH + FADH2) -3

Question 7

What is the Fatty Acids Process?

Answer 7

• The catabolism begins in the mito matrix.
• Process: Beta - oxidation.
• Sequential removal of acetyl groups (2C).
• Number of carbons determines E yield.