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基本情報
登録情報 | データベース: PDB / ID: 9csd | |||||||||||||||||||||||||||||||||||||||||||||
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タイトル | The Ectodomains of SPRING and S1P with the inhibitor PF-429242 | |||||||||||||||||||||||||||||||||||||||||||||
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![]() | MEMBRANE PROTEIN/INHIBITOR / protease / complex / inhibitor / MEMBRANE PROTEIN / MEMBRANE PROTEIN-INHIBITOR complex | |||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() site-1 protease / CREB3 factors activate genes / positive regulation of SREBP signaling pathway / ATF6-mediated unfolded protein response / ATF6 (ATF6-alpha) activates chaperones / ATF6B (ATF6-beta) activates chaperones / regulation of cholesterol biosynthetic process / Assembly of active LPL and LIPC lipase complexes / membrane protein intracellular domain proteolysis / regulation of vesicle-mediated transport ...site-1 protease / CREB3 factors activate genes / positive regulation of SREBP signaling pathway / ATF6-mediated unfolded protein response / ATF6 (ATF6-alpha) activates chaperones / ATF6B (ATF6-beta) activates chaperones / regulation of cholesterol biosynthetic process / Assembly of active LPL and LIPC lipase complexes / membrane protein intracellular domain proteolysis / regulation of vesicle-mediated transport / Regulation of cholesterol biosynthesis by SREBP (SREBF) / Golgi stack / lysosome organization / mitotic G2 DNA damage checkpoint signaling / endoplasmic reticulum unfolded protein response / cholesterol metabolic process / protein maturation / response to endoplasmic reticulum stress / Post-translational protein phosphorylation / protein processing / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / protein import into nucleus / endoplasmic reticulum lumen / Golgi membrane / serine-type endopeptidase activity / endoplasmic reticulum membrane / Golgi apparatus / proteolysis 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: 2.4 Å | |||||||||||||||||||||||||||||||||||||||||||||
![]() | Kober, D.L. | |||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for substrate selectivity by site-one protease revealed by studies with a small-molecule inhibitor. 著者: Ashley V Bullington / Ilaria Micallo / Bilkish Bajaj / Pankaj Kumar / Netanya Schlamowitz / Aurora Silva / Sebastian Hendrix / Noam Zelcer / Daniel L Kober / ![]() ![]() 要旨: Site-one protease (S1P) carries out the first proteolytic step to activate membrane-bound effector proteins in the Golgi. S1P matures through an autocatalytic process that begins in the endoplasmic ...Site-one protease (S1P) carries out the first proteolytic step to activate membrane-bound effector proteins in the Golgi. S1P matures through an autocatalytic process that begins in the endoplasmic reticulum (ER) and culminates with the displacement of its inhibitory pro-domain by its cofactor, sterol regulatory element binding protein-regulating gene (SPRING). Spatial control of S1P activity and substrate localization underpins signaling pathways governing, among others, lipogenesis, ER stress, and lysosome biogenesis. The factors governing these pathways are activated by S1P-mediated proteolysis upon their regulated transport from the ER to the Golgi. S1P cleaves substrates with the recognition sequence RX(L/I/V)Z, where X is any residue other than Cys or Pro and Z is preferably Leu or Lys. However, the structural basis for substrate recognition by S1P has remained unknown. Here, we used the small molecule PF-429242, a competitive inhibitor of S1P, to investigate substrate recognition by the S1P/SPRING complex. We determined the structure of S1P/SPRING bound to PF-429242 and found that PF-429242 binds S1P in the same pocket that recognizes the substrate's conserved P Arg. Further structural analysis suggests that S1P requires a conformation change to accommodate the substrate's P (L/I/V) residue. We designed an S1P mutation (I308A) to reduce the steric clash at the P position and generated an S1P that was resistant to PF-429242 in biochemical and cell culture assays. Our findings reveal selectivity in the recognition of substrates by S1P and provide a roadmap for the rational design of improved S1P inhibitors. | |||||||||||||||||||||||||||||||||||||||||||||
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 | ![]() | 337.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 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 | ![]() 45892MC 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
-タンパク質 , 2種, 2分子 AB
#1: タンパク質 | 分子量: 115048.203 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Construct contains 1-998 of human site one protease followed by a 3xFLAG affinity tag 由来: (組換発現) ![]() ![]() |
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#2: タンパク質 | 分子量: 23200.291 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Construct contains an IgK leader peptide followed by human SPRING residues 35-205 followed by a 10-His tag 由来: (組換発現) ![]() ![]() |
-糖 , 2種, 2分子 
#3: 多糖 | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
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#4: 糖 | ChemComp-NAG / |
-非ポリマー , 3種, 44分子 


#5: 化合物 | ChemComp-A1AZU / 分子量: 409.564 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C25H35N3O2 / タイプ: SUBJECT OF INVESTIGATION |
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#6: 化合物 | ChemComp-CA / |
#7: 水 | ChemComp-HOH / |
-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: Complex of the ectodomains of S1P and SPRING in the presence of the small molecule PF-429242 タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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分子量 | 値: 0.12 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: 7.5 |
試料 | 濃度: 0.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 400 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
急速凍結 | 凍結剤: ETHANE |
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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: TFS 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): 2000 nm / 最小 デフォーカス(公称値): 1800 nm |
撮影 | 電子線照射量: 64 e/Å2 フィルム・検出器のモデル: FEI FALCON III (4k x 4k) |
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解析
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: 2.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 122723 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 最高解像度: 2.4 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
拘束条件 |
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