Titin is often considered the longest word in the English language. As it's the largest known protein, it has the longest chemical name. This is the chemical name.
Titin is the largest known protein, consisting of 26,926
amino acids. The
molecular weight of the mature protein is approximately 2,993,442.763
u[2], and it has a theoretical
pI of 6.01
[3] The protein's empirical
chemical formula is C132983H211861N36149O40883S693. It has a theoretical
instability index (II) of 39.69, indicating that it would be stable in a
test tube. The protein's
in vivo half-life, the time it takes for half of the amount of protein in a cell to disappear after its synthesis in the cell, is predicted to be approximately 30 hours (in
mammalian reticulocytes).
[4]