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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 8fe1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Alpha1/BetaB Heteromeric Glycine Receptor in 1 mM Glycine 20 uM Ivermectin State | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | (Glycine receptor ...) x 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | MEMBRANE PROTEIN / Glycine / Channel / Ivermectin / Pentameric | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() Neurotransmitter receptors and postsynaptic signal transmission / extracellularly glycine-gated ion channel activity / extracellularly glycine-gated chloride channel activity / transmitter-gated monoatomic ion channel activity / cellular response to ethanol / cellular response to zinc ion / regulation of neuron differentiation / ligand-gated monoatomic ion channel activity / glycine binding / response to amino acid ...Neurotransmitter receptors and postsynaptic signal transmission / extracellularly glycine-gated ion channel activity / extracellularly glycine-gated chloride channel activity / transmitter-gated monoatomic ion channel activity / cellular response to ethanol / cellular response to zinc ion / regulation of neuron differentiation / ligand-gated monoatomic ion channel activity / glycine binding / response to amino acid / chloride channel complex / monoatomic ion transport / chloride transmembrane transport / central nervous system development / cellular response to amino acid stimulus / transmembrane signaling receptor activity / intracellular protein localization / perikaryon / postsynaptic membrane / dendrite / zinc ion binding / membrane / plasma membrane 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 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Gibbs, E. / Chakrapani, S. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Conformational transitions and allosteric modulation in a heteromeric glycine receptor. 著者: Eric Gibbs / Emily Klemm / David Seiferth / Arvind Kumar / Serban L Ilca / Philip C Biggin / Sudha Chakrapani / ![]() ![]() 要旨: Glycine Receptors (GlyRs) provide inhibitory neuronal input in the spinal cord and brainstem, which is critical for muscle coordination and sensory perception. Synaptic GlyRs are a heteromeric ...Glycine Receptors (GlyRs) provide inhibitory neuronal input in the spinal cord and brainstem, which is critical for muscle coordination and sensory perception. Synaptic GlyRs are a heteromeric assembly of α and β subunits. Here we present cryo-EM structures of full-length zebrafish α1βGlyR in the presence of an antagonist (strychnine), agonist (glycine), or agonist with a positive allosteric modulator (glycine/ivermectin). Each structure shows a distinct pore conformation with varying degrees of asymmetry. Molecular dynamic simulations found the structures were in a closed (strychnine) and desensitized states (glycine and glycine/ivermectin). Ivermectin binds at all five interfaces, but in a distinct binding pose at the β-α interface. Subunit-specific features were sufficient to solve structures without a fiduciary marker and to confirm the 4α:1β stoichiometry recently observed. We also report features of the extracellular and intracellular domains. Together, our results show distinct compositional and conformational properties of αβGlyR and provide a framework for further study of this physiologically important channel. #1: ![]() タイトル: High-throughput reprogramming of an NRPS condensation domain. 著者: Ines B Folger / Natália F Frota / Angelos Pistofidis / David L Niquille / Douglas A Hansen / T Martin Schmeing / Donald Hilvert / ![]() ![]() 要旨: Engineered biosynthetic assembly lines could revolutionize the sustainable production of bioactive natural product analogs. Although yeast display is a proven, powerful tool for altering the ...Engineered biosynthetic assembly lines could revolutionize the sustainable production of bioactive natural product analogs. Although yeast display is a proven, powerful tool for altering the substrate specificity of gatekeeper adenylation domains in nonribosomal peptide synthetases (NRPSs), comparable strategies for other components of these megaenzymes have not been described. Here we report a high-throughput approach for engineering condensation (C) domains responsible for peptide elongation. We show that a 120-kDa NRPS module, displayed in functional form on yeast, can productively interact with an upstream module, provided in solution, to produce amide products tethered to the yeast surface. Using this system to screen a large C-domain library, we reprogrammed a surfactin synthetase module to accept a fatty acid donor, increasing catalytic efficiency for this noncanonical substrate >40-fold. Because C domains can function as selectivity filters in NRPSs, this methodology should facilitate the precision engineering of these molecular assembly lines. #2: ![]() タイトル: Conformational transitions and allosteric modulation in a heteromeric glycine receptor 著者: Gibbs, E. / Klemm, E. / Seiferth, D. / Kumar, A. / Ilca, S.L. / Biggin, P.C. / Chakrapani, S. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 358.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 288.3 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 29019MC 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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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
-Glycine receptor ... , 2種, 5分子 ADCBE
#1: タンパク質 | 分子量: 52537.598 Da / 分子数: 4 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: glra1 発現宿主: ![]() 参照: UniProt: O93430 #2: タンパク質 | | 分子量: 65820.281 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: glrb2, zgc:101041, glrbb, SO:0001217 発現宿主: ![]() 参照: UniProt: Q6DC22 |
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-糖 , 1種, 6分子 
#4: 糖 | ChemComp-NAG / |
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-非ポリマー , 5種, 47分子 








#3: 化合物 | ChemComp-GLY / #5: 化合物 | ChemComp-IVM / ( #6: 化合物 | ChemComp-PX4 / #7: 化合物 | ChemComp-PLM / #8: 化合物 | ChemComp-D10 / | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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Has protein modification | Y |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Zebrafish Alpha1 BetaB Heteromeric Glycine Receptor / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT | |||||||||||||||||||||||||||||||||||
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分子量 | 値: .25 MDa / 実験値: NO | |||||||||||||||||||||||||||||||||||
由来(天然) | 生物種: ![]() ![]() | |||||||||||||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() | |||||||||||||||||||||||||||||||||||
緩衝液 | pH: 8 | |||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: Single Particles | |||||||||||||||||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | |||||||||||||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 800 nm |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 精密化 | |||||||||||||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 204512 / アルゴリズム: BACK PROJECTION / クラス平均像の数: 1 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||
拘束条件 |
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