List of Essential and Non-essential Amino acids

List of Essential and Non-essential Amino acids

Amino acids are divided into two types.

Essential Amino acids :

Essential amino acids are 9 in number and they are not synthesized in our body, they are obtained through diet, hence they are called as essential amino acids.

1. Isoleucine
2. Leucine
3. Lysine
4. Methionine
5. Phenylalanine
6. Threonine
7. Tryptophan
8. Valine
9. Histidine

Non-Essential Amino acids :

Non-essential amino acids are 12 in number and they are synthesized in our body, hence called as non essential amino acids.

1. Alanine
2. Arginine
3. Aspartic acid
4. Citrulline
5. Cystine
6. Glutamic acid
7. Glutamine
8. Glycine
9. Hydroxyproline
10. Proline
11. Serine
12. Tyrosine

Histidine is an essential amino acid for only infants, it is a non essential amino acid for adults.

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