Tag: Non standard amino acids

While most proteins are built from a standard set of 20 amino acids, science has identified over 140 non-proteinogenic types. This guide will help you understand the core differences and answer the question: Which of the following amino acids is considered a non-standard amino acid?

While the universal genetic code typically accounts for 20 standard amino acids, some proteins incorporate additional, non-standard variants during or after translation. A prime example of a non standard amino acid that is genetically encoded is selenocysteine, often referred to as the '21st amino acid'.