- PDB-7lwd: Cryo-EM structure of the wild-type human serotonin transporter co... -
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基本情報
登録情報
データベース: PDB / ID: 7lwd
タイトル
Cryo-EM structure of the wild-type human serotonin transporter complexed with vilazodone, imipramine and 15B8 Fab
要素
Sodium-dependent serotonin transporter
heavy chain antibody fragment
light chain antibody fragment
キーワード
TRANSPORT PROTEIN/Immune System / antidepressant (抗うつ薬) / complex / transporter (運搬体タンパク質) / antibody (抗体) / TRANSPORT PROTEIN (運搬体タンパク質) / TRANSPORT PROTEIN-Immune System complex
機能・相同性
機能・相同性情報
negative regulation of cerebellar granule cell precursor proliferation / regulation of thalamus size / Serotonin clearance from the synaptic cleft / serotonergic synapse / positive regulation of serotonin secretion / cocaine binding / sperm ejaculation / serotonin:sodium:chloride symporter activity / negative regulation of synaptic transmission, dopaminergic / neurotransmitter transmembrane transporter activity ...negative regulation of cerebellar granule cell precursor proliferation / regulation of thalamus size / Serotonin clearance from the synaptic cleft / serotonergic synapse / positive regulation of serotonin secretion / cocaine binding / sperm ejaculation / serotonin:sodium:chloride symporter activity / negative regulation of synaptic transmission, dopaminergic / neurotransmitter transmembrane transporter activity / serotonin uptake / enteric nervous system development / cellular response to cGMP / negative regulation of organ growth / monoamine transmembrane transporter activity / sodium ion binding / monoamine transport / serotonin binding / 血管収縮 / brain morphogenesis / 神経伝達物質輸送体 / antiporter activity / syntaxin-1 binding / nitric-oxide synthase binding / 脱分極 / social behavior / negative regulation of neuron differentiation / sodium ion transmembrane transport / 細胞内膜系 / positive regulation of cell cycle / cellular response to retinoic acid / monoatomic cation channel activity / response to nutrient / response to toxic substance / 記憶 / 血小板 / 概日リズム / actin filament binding / integrin binding / response to estradiol / presynaptic membrane / postsynaptic membrane / response to hypoxia / endosome membrane / neuron projection / response to xenobiotic stimulus / 脂質ラフト / focal adhesion / シナプス / positive regulation of gene expression / identical protein binding / 細胞膜 類似検索 - 分子機能
National Institutes of Health/National Institute of Mental Health (NIH/NIMH)
5R37MH070039
米国
Howard Hughes Medical Institute (HHMI)
米国
Danish Council for Independent Research
7016-00272A
デンマーク
Lundbeckfonden
R344-2020-1020
デンマーク
Novo Nordisk Foundation
NNF19OC0058496
デンマーク
The Carlsberg Foundation
CF19-0527
デンマーク
The Carlsberg Foundation
CF20-0345
デンマーク
引用
ジャーナル: Nat Commun / 年: 2021 タイトル: The antidepressant drug vilazodone is an allosteric inhibitor of the serotonin transporter. 著者: Per Plenge / Dongxue Yang / Kristine Salomon / Louise Laursen / Iris E Kalenderoglou / Amy H Newman / Eric Gouaux / Jonathan A Coleman / Claus J Loland / 要旨: Depression is a common mental disorder. The standard medical treatment is the selective serotonin reuptake inhibitors (SSRIs). All characterized SSRIs are competitive inhibitors of the serotonin ...Depression is a common mental disorder. The standard medical treatment is the selective serotonin reuptake inhibitors (SSRIs). All characterized SSRIs are competitive inhibitors of the serotonin transporter (SERT). A non-competitive inhibitor may produce a more favorable therapeutic profile. Vilazodone is an antidepressant with limited information on its molecular interactions with SERT. Here we use molecular pharmacology and cryo-EM structural elucidation to characterize vilazodone binding to SERT. We find that it exhibits non-competitive inhibition of serotonin uptake and impedes dissociation of [H]imipramine at low nanomolar concentrations. Our SERT structure with bound imipramine and vilazodone reveals a unique binding pocket for vilazodone, expanding the boundaries of the extracellular vestibule. Characterization of the binding site is substantiated with molecular dynamics simulations and systematic mutagenesis of interacting residues resulting in decreased vilazodone binding to the allosteric site. Our findings underline the versatility of SERT allosteric ligands and describe the unique binding characteristics of vilazodone.