Understanding Amino Acids

Amino acids are small molecules that serve as the building blocks of peptides and proteins. There are twenty standard amino acids commonly found in biological systems, each with distinct chemical properties.

When amino acids link together through peptide bonds, they form chains. The specific amino acids used, and the order in which they appear, define the resulting peptide.

Some amino acids are attracted to water; others repel it. Some carry a charge; others are neutral. These properties influence how a chain folds and how it interacts with its environment.

This is why sequence is so consequential. Two peptides made from the same amino acids in a different order can behave very differently.