Fig. 2
From: The biological functions and metabolic pathways of valine in swine
Interaction of valine with amino acids. A Valine competes with leucine for branched-chain amino acid transaminase (BCAT). High leucine competes for the BCAT and enhance the catabolism of valine. B Valine competes with leucine and isoleucine for the amino acid transporters in intestinal epithelial. C The BCAAs (leucine, isoleucine and valine) and aromatic amino acids, compete for transport into the brain through L-type amino acid transporters