Transaminase is an enzyme that performs the transfer of an amino group from one molecule to another. Synonyms for this term include aminotransferase and transamidase. These enzymes play a critical role in various metabolic processes and are vital for the proper functioning of the body's immune system. Additionally, elevated levels of transaminases in the blood are used as indicators of liver damage, certain heart conditions, and other diseases. Other common types of transaminases include alanine aminotransferase (ALT) and aspartate aminotransferase (AST). These enzymes are typically measured through medical tests, which can help doctors diagnose and treat a wide range of health conditions.