utake of [ 3h ] gaba ( 0.5 microm ) was inhibited by beta-guanidinopropionic acid ( apparent ki , 28 microm ) , beta-alanine ( ki , 55 microm ) , gamma-amino-beta-hydroxybutyric acid ( ki , 220 microm ) , beta-amino-n-butyric acid ( ki , 708 microm ) , 3-aminopropanesulphonic acid ( ki , 832 microm ) and taurine ( ki greater than 1 mm ) .
C0000392
beta-alanine
C0002520
amino