Co-operativity in sodium-independent taurine binding to brain membranes in the mouse.

Sodium-independent taurine binding to mouse brain membranes treated twice with Triton X-100 exhibited properties of positive co-operativity, suggesting that two or more taurine molecules interact at the binding site. The proposed taurine antagonist 6-aminomethyl-3-methyl-4H-1,2,4-benzothiadiazine-1,1-dioxide and the new anticonvulsant taurine derivative taltrimide as well as glycine and GABA with their antagonists displaced taurine binding, strychnine being the most effective.