[(1,2,5,6-tetrahydropyridine-4-yl)methylphosphinic acid]
C6H12NO2P.0.4H2O(168.35)。
GABAC受容体の選択的競合的阻害剤(Murata,1996)。
【特徴】
◆GABAC受容体の阻害剤(Murata,1996)
解離定数Kb 2.1uM(Ragozzino,1996)
高濃度GABAでは阻害できない(Short-Term Depression at the Reciprocal Synapses between a Retinal Bipolar Cell Terminal and Amacrine Cells)
(Ragozzino,1996)
ρ1よりρ2に効く傾向(Pan,Qian,2005)
ヒトρ1受容体ではρ2受容体の8倍の感度(Chebib,1998)
ρ1,2問わずA-よりB-typeへの効果弱い(Pan,Qian,2005)
・GABAA受容体の阻害剤(Kb 320uM)
τoffは0.46ms(Microscopic kinetics and energetics distinguish GABAA receptor agonists from antagonists)
・GABAB受容体の作動剤(EC50 500uM)
◆水溶性<100mM
◆非特異的効果(GABA responses of rod bipolar cells in rabbit retinal slices; GABAA and GABAC receptors in adult porcine cones: evidence from a photoreceptor-glia co-culture model)
【濃度】
50uM(Switching between transient and sustained signaling at the rod bipolar-AII amacrine cell synapse of the mouse retina; Fast neurotransmitter release triggered by Ca2+ influx through AMPA-type glutamate receptors)
150uM(Activation of the Tonic GABAC Receptor Current in Retinal Bipolar Cell Terminals by Non-Vesicular GABA Release)
2011/06/02 masashi tanaka