Podcast
Questions and Answers
Which amino acid is synthesized in the human body from arginine?
Which amino acid is synthesized in the human body from arginine?
- Nitric oxide (correct)
- Serotonin
- Porphyrin
- Glutamine
What is the precursor for serotonin?
What is the precursor for serotonin?
- Tryptophan (correct)
- Tyrosine
- Asparagine
- Arginine
Which of the following amino acids is considered optically inactive?
Which of the following amino acids is considered optically inactive?
- Glycine (correct)
- Serine
- Threonine
- Valine
Which amino acid has two asymmetric carbon atoms?
Which amino acid has two asymmetric carbon atoms?
Which amino acid is not used in protein synthesis?
Which amino acid is not used in protein synthesis?
Flashcards
Amino acid precursor for nitric oxide
Amino acid precursor for nitric oxide
Arginine is the precursor for nitric oxide synthesis in the human body.
Amino acid precursor for serotonin
Amino acid precursor for serotonin
Tryptophan is the amino acid precursor for serotonin production.
Non-standard amino acid example
Non-standard amino acid example
γ-amino butyric acid (GABA), β-alanine, and 1-ornithine are examples of non-standard amino acids.
Optically inactive amino acid
Optically inactive amino acid
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Amino acid with an achiral carbon atom
Amino acid with an achiral carbon atom
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Study Notes
Amino Acid Synthesis and Properties
- Nitric oxide is synthesized from arginine
- Tryptophan is a precursor to serotonin
- γ-aminobutyric acid, β-alanine, and ornithine are non-standard amino acids
- β-alanine is not found in proteins
- Glycine is an optically inactive amino acid
- Glycine has an achiral carbon atom
- Aspartate, glycine, and glutamine are required for purine nucleotide synthesis (asparagine is not)
- Arginine has three asymmetric carbon atoms
- Leucine and threonine can contain two asymmetric carbon atoms
- Alanine, leucine, and valine are nonpolar amino acids
- Glycine is required for porphyrin synthesis
- Histidine is a neurotransmitter
Additional Information
- Serine, glycine, and asparagine are amino acids.
- Glutamate is an amino acid.
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