Valine is the amino acid that is least likely to participate in acid-base catalysis.
Valine is an amino acid that is part of muscle tissue, it is usually used to recover energy that is used by muscles during exercise, so it participates in muscle metabolism. Valine is part of the essential amino acids, that is, it must be ingested in order to obtain it. We can find it in plants that synthesize it from pyruvic acid.
We can find it in foods such as milk, eggs, meat, fish, legumes, nuts, among others.
Therefore, we can confirm that valine is the amino acid that is least likely to participate in acid-base catalysis.
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