carrier protein article 30 metabolism 28 genetics 22 nonhuman 20 Membrane Transport Proteins 16 controlled study 16 drug effect 16 priority journal 16 gene expression regulation 14 Animals 12 Carrier Proteins 12 Plants, Genetically Modified 10 transgenic plant 10 transport at the cellular level 10 4 aminobutyric acid 8 Aminolevulinic Acid 8 Biological Transport 8 Gene Expression Regulation, Plant 8 Humans 8 Plant Proteins 8 aminolevulinic acid 8 gamma-Aminobutyric Acid 8 growth, development and aging 8 human 8 pathogenicity 8 phenotype 8 promoter region 8 unclassified drug 8 4 aminobutyric acid carrier 6