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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: 8p2z | ||||||
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タイトル | Structure of human SIT1 bound to L-pipecolate (focussed map / refinement) | ||||||
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![]() | MEMBRANE PROTEIN / amino acid transporter / proline / SLC6A20 / ACE2 | ||||||
機能・相同性 | ![]() proline:sodium symporter activity / L-isoleucine transmembrane transporter activity / solute:sodium symporter activity / L-isoleucine import across plasma membrane / L-proline import across plasma membrane / Variant SLC6A20 contributes towards hyperglycinuria (HG) and iminoglycinuria (IG) / Variant SLC6A20 contributes towards hyperglycinuria (HG) and iminoglycinuria (IG) / amino-acid betaine transport / proline import across plasma membrane / L-proline transmembrane transporter activity ...proline:sodium symporter activity / L-isoleucine transmembrane transporter activity / solute:sodium symporter activity / L-isoleucine import across plasma membrane / L-proline import across plasma membrane / Variant SLC6A20 contributes towards hyperglycinuria (HG) and iminoglycinuria (IG) / Variant SLC6A20 contributes towards hyperglycinuria (HG) and iminoglycinuria (IG) / amino-acid betaine transport / proline import across plasma membrane / L-proline transmembrane transporter activity / amino-acid betaine transmembrane transporter activity / glycine import across plasma membrane / glycine transport / proline transport / amino acid import across plasma membrane / neutral L-amino acid transmembrane transporter activity / amino acid transmembrane transporter activity / Amino acid transport across the plasma membrane / Na+/Cl- dependent neurotransmitter transporters / amino acid transport / positive regulation of amino acid transport / angiotensin-converting enzyme 2 / positive regulation of L-proline import across plasma membrane / angiotensin-mediated drinking behavior / 加水分解酵素; プロテアーゼ; ペプチド結合加水分解酵素; 金属プロテアーゼ / regulation of systemic arterial blood pressure by renin-angiotensin / positive regulation of gap junction assembly / tryptophan transport / regulation of cardiac conduction / regulation of vasoconstriction / peptidyl-dipeptidase activity / maternal process involved in female pregnancy / transporter activator activity / transport across blood-brain barrier / Metabolism of Angiotensinogen to Angiotensins / carboxypeptidase activity / angiotensin maturation / Attachment and Entry / receptor-mediated endocytosis of virus by host cell / metallocarboxypeptidase activity / viral life cycle / positive regulation of cardiac muscle contraction / sodium ion transmembrane transport / regulation of cytokine production / blood vessel diameter maintenance / negative regulation of smooth muscle cell proliferation / brush border membrane / negative regulation of ERK1 and ERK2 cascade / positive regulation of reactive oxygen species metabolic process / metallopeptidase activity / endocytic vesicle membrane / regulation of cell population proliferation / virus receptor activity / regulation of inflammatory response / endopeptidase activity / viral translation / Potential therapeutics for SARS / Induction of Cell-Cell Fusion / membrane fusion / entry receptor-mediated virion attachment to host cell / Attachment and Entry / receptor-mediated virion attachment to host cell / cilium / apical plasma membrane / membrane raft / endoplasmic reticulum lumen / symbiont entry into host cell / cell surface / negative regulation of transcription by RNA polymerase II / extracellular space / extracellular exosome / extracellular region / zinc ion binding / identical protein 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: 3.5 Å | ||||||
![]() | Li, H.Z. / Pike, A.C.W. / Chi, G. / Hansen, J.S. / Lee, S.G. / Rodstrom, K.E.J. / Bushell, S.R. / Speedman, D. / Evans, A. / Wang, D. ...Li, H.Z. / Pike, A.C.W. / Chi, G. / Hansen, J.S. / Lee, S.G. / Rodstrom, K.E.J. / Bushell, S.R. / Speedman, D. / Evans, A. / Wang, D. / He, D. / Shrestha, L. / Nasrallah, C. / Chalk, R. / Moreira, T. / MacLean, E.M. / Marsden, B. / Bountra, C. / Burgess-Brown, N.A. / Dafforn, T.R. / Carpenter, E.P. / Sauer, D.B. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure and function of the SIT1 proline transporter in complex with the COVID-19 receptor ACE2. 著者: Huanyu Z Li / Ashley C W Pike / Irina Lotsaris / Gamma Chi / Jesper S Hansen / Sarah C Lee / Karin E J Rödström / Simon R Bushell / David Speedman / Adam Evans / Dong Wang / Didi He / Leela ...著者: Huanyu Z Li / Ashley C W Pike / Irina Lotsaris / Gamma Chi / Jesper S Hansen / Sarah C Lee / Karin E J Rödström / Simon R Bushell / David Speedman / Adam Evans / Dong Wang / Didi He / Leela Shrestha / Chady Nasrallah / Nicola A Burgess-Brown / Robert J Vandenberg / Timothy R Dafforn / Elisabeth P Carpenter / David B Sauer / ![]() ![]() 要旨: Proline is widely known as the only proteogenic amino acid with a secondary amine. In addition to its crucial role in protein structure, the secondary amino acid modulates neurotransmission and ...Proline is widely known as the only proteogenic amino acid with a secondary amine. In addition to its crucial role in protein structure, the secondary amino acid modulates neurotransmission and regulates the kinetics of signaling proteins. To understand the structural basis of proline import, we solved the structure of the proline transporter SIT1 in complex with the COVID-19 viral receptor ACE2 by cryo-electron microscopy. The structure of pipecolate-bound SIT1 reveals the specific sequence requirements for proline transport in the SLC6 family and how this protein excludes amino acids with extended side chains. By comparing apo and substrate-bound SIT1 states, we also identify the structural changes that link substrate release and opening of the cytoplasmic gate and provide an explanation for how a missense mutation in the transporter causes iminoglycinuria. | ||||||
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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PDBx/mmCIF形式 | ![]() | 137.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 93.2 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 32.5 KB | 表示 | |
CIF形式データ | ![]() | 47 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 17380MC ![]() 8p2wC ![]() 8p2xC ![]() 8p2yC ![]() 8p30C ![]() 8p31C 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
#1: タンパク質 | 分子量: 93425.570 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: ACE2 TMD / 由来: (組換発現) ![]() ![]() | ||||||||
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#2: タンパク質 | 分子量: 71376.258 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() | ||||||||
#3: 糖 | #4: 化合物 | ChemComp-YCP / ( | #5: 化合物 | ChemComp-CL / | 研究の焦点であるリガンドがあるか | Y | 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: SIT1:ACE2 complex / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 値: 0.34 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 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 4 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: 200 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 / 詳細: grid blotted for 4sec after a 20sec wait time |
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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 / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 1200 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 1.77 sec. / 電子線照射量: 50 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 13194 詳細: Images were collected in super-resolution mode EPU bin2 |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 動画フレーム数/画像: 50 / 利用したフレーム数/画像: 1-50 |
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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 | ||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 808912 詳細: particles from template and TOPAZ trained picking after initial 2D classification to remove junk | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 344606 / アルゴリズム: FOURIER SPACE 詳細: cryoSPARC masked local refinement focussed on SIT1 with symmetry expanded particles after 3D classification in RELION クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 112 / プロトコル: OTHER / 空間: REAL 詳細: Initial model fitting was peformed in Chimera and model building in COOT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | PDB-ID: 6M18 PDB chain-ID: C / Accession code: 6M18 / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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