Proteins are made up of 20 amino acids. Each amino acid has an α-carboxyl group, a
primary α-amino group, and a side chain called the R group (see Image. Amino Acid …

Here, we compared the traditional nutritional definition of the dispensable and
indispensable amino acids for humans with categorizations based on amino acid …

Following its predecessor, the second edition of Amino Acids: Biochemistry and Nutrition
presents exhaustive coverage of amino acids in the nutrition, metabolism and health of …

Proteins are macromolecules found in all biological systems, from lower prokaryotes to
higher eukaryotes. They occupy a prominent position in living cells, both quantitatively and …

Amino acids (AAs) 3 are organic compounds that contain amino and acid groups (1). Based
on the configuration of glyceraldehyde (L-or D-isomers as introduced by Emil Fischer in …

This text is suitable for advanced undergraduate and beginning graduate students in
chemistry and biochemistry studying amino acids and peptides. The authors concentrate on …

The ultimate goal of proteomics is determination of the exact chemical composition of protein
species, including their complete amino acid sequence and the identification of each …

Publisher Summary This chapter discusses naturally occurring peptides, which allows
several generalizations concerning their importance as distinct chemical entities. Certain …

Even though nonproteinogenic amino acids are present in nature, they are usually defined
as unnatural or nonnatural, meaning that they are other than the 22 natural L-α-amino acids …

The discovery of nonproteinogenic amino acids among natural products, either in native
state or as fragments of complex molecules, has increased the level of interest in this family …