When broken down into skatole and indole, it is the main cause of the foul stench of feces.  In 1988, the production of this 
When broken down into skatole and indole, it is the main cause of the foul stench of feces.  In 1988, the production of this molecule by Showa Denko K.K. using genetically engineered bacteria resulted in the death of thirty-seven people from eosinophilia myalgia syndrome.  First isolated from casein, it works with lysine to reduce cholesterol levels and can form niacin when low in the body, thus a lack of it causes pellagra.   FTP, name this largest essential amino acid with a cyclic side chain, a metabolic precursor to serotonin.
When broken down into skatole and indole, it is the main cause of the foul stench of feces.  
tryptophan