National Institutes of Health/National Institute of Mental Health (NIH/NIMH)
MH121453
米国
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)
MH106912
米国
Lundbeckfonden
R368-2021-522
デンマーク
Novo Nordisk Foundation
NNF18OC0032608
デンマーク
Aarhus University Research Foundation
AUFF-E-2022-9-24
デンマーク
National Institutes of Health/National Library of Medicine (NIH/NLM)
R01 DA051205-03
米国
National Institutes of Health/National Library of Medicine (NIH/NLM)
S10OD030245-01
米国
National Institutes of Health/National Library of Medicine (NIH/NLM)
P30 CA010815-53
米国
引用
ジャーナル: J Neurochem / 年: 2024 タイトル: Cryo-EM structure of the dopamine transporter with a novel atypical non-competitive inhibitor bound to the orthosteric site. 著者: Clara Nautrup Pedersen / Fuyu Yang / Samantha Ita / Yibin Xu / Ravikumar Akunuri / Sofia Trampari / Caroline Marie Teresa Neumann / Lasse Messell Desdorf / Birgit Schiøtt / Joseph M Salvino ...著者: Clara Nautrup Pedersen / Fuyu Yang / Samantha Ita / Yibin Xu / Ravikumar Akunuri / Sofia Trampari / Caroline Marie Teresa Neumann / Lasse Messell Desdorf / Birgit Schiøtt / Joseph M Salvino / Ole Valente Mortensen / Poul Nissen / Azadeh Shahsavar / 要旨: The regulation of dopamine (DA) removal from the synaptic cleft is a crucial process in neurotransmission and is facilitated by the sodium- and chloride-coupled dopamine transporter DAT. ...The regulation of dopamine (DA) removal from the synaptic cleft is a crucial process in neurotransmission and is facilitated by the sodium- and chloride-coupled dopamine transporter DAT. Psychostimulant drugs, cocaine, and amphetamine, both block the uptake of DA, while amphetamine also triggers the release of DA. As a result, they prolong or even amplify neurotransmitter signaling. Atypical inhibitors of DAT lack cocaine-like rewarding effects and offer a promising strategy for the treatment of drug use disorders. Here, we present the 3.2 Å resolution cryo-electron microscopy structure of the Drosophila melanogaster dopamine transporter (dDAT) in complex with the atypical non-competitive inhibitor AC-4-248. The inhibitor partially binds at the central binding site, extending into the extracellular vestibule, and locks the transporter in an outward open conformation. Our findings propose mechanisms for the non-competitive inhibition of DAT and attenuation of cocaine potency by AC-4-248 and provide a basis for the rational design of more efficacious atypical inhibitors.