Amino Acid Catabolism
About the Lecture
The lecture Amino Acid Catabolism by Kevin Ahern, PhD is from the course Amino Acid Metabolism. It contains the following chapters:
- Amino Acid Catabolism
- Amino Acids Modified After Incorporation Into a Protein
Included Quiz Questions
Which of the following is true regarding amino acid catabolism?
- Glucogenic amino acids include those broken down into pyruvate and oxaloacetate.
- Ketogenic amino acids break down to ketone bodies, such as acetone.
- Most amino acids are ketogenic.
- Ketogenic amino acids are broken down into gluconeogenesis intermediates.
- Acetyl-CoA is a common intermediate for glucogenic amino acids.
Which of the following is true regarding post-translational modification of amino acid side chains?
- It involves phosphorylation of serine and threonine.
- It involves carboxylation of arginine.
- It results in glycosylation of proline.
- It results in the decarboxylation of tyrosine.
- It results in phosphorylation of glycine.
Which of the following are ketogenic amino acids?
- Lysine and leucine
- Isoleucine and valine
- Tyrosine and glutamate
- Glycine and asparagine
- Threonine and serine
Which of the following is not correctly associated regarding the defective amino acid catabolism?
- Alcaptonuria — alanine and threonine
- Methylmalonic acidemia — methionine, threonine, isoleucine, and valine
- Homocystinuria — methionine
- Glycine encephalopathy — glycine
- Propionic acidemia — methionine, threonine, isoleucine, and valine
Which of the following statements is NOT true regarding amino acid modifications?
- The disulfide bond formations between the two cysteine residues of a protein molecule give rise to an unstable structure.
- The myristoylation of glycine involves the addition of myristic acid to the glycine.
- Phosphotyrosine plays an important role in the cell signaling process.
- Lysine amino acid commonly undergoes methylation, acetylation, and hydroxylation modification.
- Asparagine may be modified by phosphorylation.
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Author of lecture Amino Acid Catabolism
Kevin Ahern, PhD
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Explains everything extremely clearly and made all of the processes easy to understand. This was a great lecture series!
