It is the largest protein in our body essential for the functioning of the heart and other muscles to which it gives elasticity and is made up of more than half a million atoms. The full name given to it by IUPAC, International Union of Pure and Applied Chemistry, has 189. 819 characters and would take longer to read than the New Testament. That's why scientists abbreviate it with its methionyl- start and its end-isoleucine.
