Na+ and pH dependence of proline and beta-alanine absorption in rat small intestine.

AIMS Early characterization of intestinal absorption of imino acids in mammals has demonstrated the existence of a Na+-dependent, Cl- -independent transport system in rat small intestine, which is the only carrier for beta-alanine. Based on the substrate selectivity, it was proposed that the Proton Amino Acid Transporter 1 (PAT1) could be the same as this… CONTINUE READING