4 aminobutyric acid 4 Amino Acid Transport Systems Aminolevulinic Acid 4 GABA Plasma Membrane Transport Proteins 4 Organic Anion Transporters 4 Saccharomyces cerevisiae 4 Saccharomyces cerevisiae Proteins 4 amino acid 4 aminolevulinic acid 4 article 4 gamma-Aminobutyric Acid 4 4 aminobutyric acid carrier 2 Amino Acid Transport Systems, Neutral 2 Amino Acids 2 Biological Transport 2 Carrier Proteins 2 GABA permease 2 Gene Expression Regulation, Fungal 2 Gene expression 2 Kinetics 2 Membrane Proteins 2 Membrane Transport Proteins 2 Saccharomyces cerevisiae protein 2 Sensor systems 2 Species Specificity 2 UGA4 gene 2 UGA4 protein, S cerevisiae 2 amino acid transporter 2 carrier protein 2 comparative study 2