EPISODE · Dec 13, 2025 · 2 MIN
Catabolism of D/L Amino Acids
from Metabolism Made Easy · host A J Ghalayini, Ph.D.
In nature, amino acids exist as two distinct isomers, designated D and L Isomers. These mirror images of one another are metabolized differently in the cell. Only L isomers are used in cellular protein synthesis. Most catabolic enzymes metabolize L-isomers only while D-isomers are metabolized by D-Amino acid oxidase.
What this episode covers
In nature, amino acids exist as two distinct isomers, designated D and L Isomers. These mirror images of one another are metabolized differently in the cell. Only L isomers are used in cellular protein synthesis. Most catabolic enzymes metabolize L-isomers only while D-isomers are metabolized by D-Amino acid oxidase.
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Catabolism of D/L Amino Acids
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