<prompt> All of the following are branched chain amino acids EXCEPT:LeucineLysineIsoleucineValine  <response>: There are three branched chain amino acids: Valine, Leucine and Isoleucine. Branching is a difficult thing to be done just an idea to learn. So, all these branched chain amino acids are essential required in diet. Extra Information: Branched Chain Amino Acids All are non-polar Isoleucine is most non-polar Leucine is Ketogenic Valine is Glucogenic Isoleucine- both Ketogenic and Glucogenic Amino acid that can be a fuel for brain is Isoleucine 