Amino acids are small molecules that are the building blocks of proteins. Proteins serve as structural support inside the cell and they perform many vital chemical reactions. Each protein is a ...

Some evidence has been obtained that, in exponentially growing cells, certain of the nucleotides occur in combination with amino-acids or simple peptides.

The Structural and Functional Diversity of Peptides Studies suggest that peptides may exhibit remarkable diversity in structure and function, which arises from variations in amino acid composition, ...