Amino Acid Transporter

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** Amino Acid Transporter proteins carry organic compounds containing an amino (-NH2) and a carboxyl (-COOH) group through solubility barriers, such as aqueous body fluids, lipid membranes or across epithelial layers. After binding substrate, transmembrane transporters often undergo an energy-dependent conformational change that moves the substrate across the membrane with (symport) or against (antiport) concentration gradients.

**Synonyms:** - Amino Acid Channel - Amino Acid Transport Protein