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基本情報
登録情報 | データベース: PDB / ID: 8bhk | ||||||
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タイトル | GABA-A receptor a5 homomer - a5V3 - Diazepam | ||||||
![]() | Gamma-aminobutyric acid receptor subunit alpha-5 | ||||||
![]() | MEMBRANE PROTEIN / pLGIC GABA Neurotransmission | ||||||
機能・相同性 | ![]() GABA receptor binding / GABA receptor activation / inner ear receptor cell development / inhibitory synapse assembly / GABA-A receptor activity / GABA-gated chloride ion channel activity / GABA-A receptor complex / innervation / postsynaptic specialization membrane / neuronal cell body membrane ...GABA receptor binding / GABA receptor activation / inner ear receptor cell development / inhibitory synapse assembly / GABA-A receptor activity / GABA-gated chloride ion channel activity / GABA-A receptor complex / innervation / postsynaptic specialization membrane / neuronal cell body membrane / gamma-aminobutyric acid signaling pathway / synaptic transmission, GABAergic / associative learning / cochlea development / behavioral fear response / chloride channel complex / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / chloride transmembrane transport / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / GABA-ergic synapse / signaling receptor activity / presynaptic membrane / postsynapse / signal transduction / nucleoplasm / plasma membrane / cytosol 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.3 Å | ||||||
![]() | Miller, P.S. / Malinauskas, T.M. / Kasaragod, V.B. / Chirgadze, D.Y. | ||||||
資金援助 | 1件
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![]() | ![]() タイトル: The molecular basis of drug selectivity for α5 subunit-containing GABA receptors. 著者: Vikram Babu Kasaragod / Tomas Malinauskas / Ayla A Wahid / Judith Lengyel / Frederic Knoflach / Steven W Hardwick / Charlotte F Jones / Wan-Na Chen / Xavier Lucas / Kamel El Omari / Dimitri Y ...著者: Vikram Babu Kasaragod / Tomas Malinauskas / Ayla A Wahid / Judith Lengyel / Frederic Knoflach / Steven W Hardwick / Charlotte F Jones / Wan-Na Chen / Xavier Lucas / Kamel El Omari / Dimitri Y Chirgadze / A Radu Aricescu / Giuseppe Cecere / Maria-Clemencia Hernandez / Paul S Miller / ![]() ![]() 要旨: α5 subunit-containing γ-aminobutyric acid type A (GABA) receptors represent a promising drug target for neurological and neuropsychiatric disorders. Altered expression and function contributes to ...α5 subunit-containing γ-aminobutyric acid type A (GABA) receptors represent a promising drug target for neurological and neuropsychiatric disorders. Altered expression and function contributes to neurodevelopmental disorders such as Dup15q and Angelman syndromes, developmental epilepsy and autism. Effective drug action without side effects is dependent on both α5-subtype selectivity and the strength of the positive or negative allosteric modulation (PAM or NAM). Here we solve structures of drugs bound to the α5 subunit. These define the molecular basis of binding and α5 selectivity of the β-carboline, methyl 6,7-dimethoxy-4-ethyl-β-carboline-3-carboxylate (DMCM), type II benzodiazepine NAMs, and a series of isoxazole NAMs and PAMs. For the isoxazole series, each molecule appears as an 'upper' and 'lower' moiety in the pocket. Structural data and radioligand binding data reveal a positional displacement of the upper moiety containing the isoxazole between the NAMs and PAMs. Using a hybrid molecule we directly measure the functional contribution of the upper moiety to NAM versus PAM activity. Overall, these structures provide a framework by which to understand distinct modulator binding modes and their basis of α5-subtype selectivity, appreciate structure-activity relationships, and empower future structure-based drug design campaigns. | ||||||
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-関連構造データ
関連構造データ | ![]() 16058MC ![]() 8bejC ![]() 8bgiC ![]() 8bhaC ![]() 8bhbC ![]() 8bhgC ![]() 8bhiC ![]() 8bhmC ![]() 8bhoC ![]() 8bhqC ![]() 8bhrC ![]() 8bhsC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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