questionedithistorytranslationsCurrent version This is the accepted version. added by Ninjai Feb. 2, 2018, 3:59 p.m. Which of the following is not a branched-chain amino acid? leucinevalinecystineisoleucineA branched-chain amino acid (BCAA) is an amino acid having aliphatic side-chains with a branch. Among the proteinogenic amino acids, there are three BCAAs: leucine, isoleucine and valine. They are among the nine essential amino acids for humans, accounting for 35% of the essential amino acids in muscle proteins and 40% of the preformed amino acids required by mammals.NinjaiShare and bring new players to the game!0Very uninterestingToo difficultPoorly writtenIncorrect or questionableCorrect this questionwikipedia → Branched-chain amino acid0Very interesting! wikipedia → Branched-chain amino acidreach: rather globalfoodvitaminsVotes Acceptable Piper Perabo Acceptable Eolia Acceptable th3pizgat0r