What are Some Examples of Non-Standard Amino Acids Used in Catalysis?
Examples of non-standard amino acids used in catalysis include selenocysteine and pyrrolysine. Selenocysteine is known as the 21st amino acid and is used in enzymes that catalyze redox reactions due to its unique redox properties. Pyrrolysine, the 22nd amino acid, is found in certain methanogenic archaea and is involved in methane production.