Let's start with the basics. Amino acids, the Lego bricks of proteins, are joined together through a remarkable bond known as the peptide bond.Let's start with the basics. Amino acids, the Lego bricks of proteins, are joined together through a remarkable bond known as the peptide bond.At the heart of this bond lies a partnership between the amino group of one amino acid and the carboxyl group of another.When these two groups come together, a process called dehydration synthesis occurs. Think of it as a molecular handshake where water molecules are bid farewell, allowing the amino acids to link up, forming a peptide chain.