+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-30840 | ||||||||||||
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タイトル | cryo EM map of the LAT1-4F2hc bound with JX-119, focused refined on transmembrane region | ||||||||||||
マップデータ | cryo EM map of the LAT1-4F2hc bound with JX-119, focused refined on transmembrane region | ||||||||||||
試料 |
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機能・相同性 | 機能・相同性情報 L-tryptophan transmembrane transporter activity / alanine transport / L-tryptophan transmembrane transport / positive regulation of L-leucine import across plasma membrane / cellular response to L-arginine / thyroid hormone transmembrane transporter activity / Defective SLC7A7 causes lysinuric protein intolerance (LPI) / neutral L-amino acid secondary active transmembrane transporter activity / apical pole of neuron / amino acid import across plasma membrane ...L-tryptophan transmembrane transporter activity / alanine transport / L-tryptophan transmembrane transport / positive regulation of L-leucine import across plasma membrane / cellular response to L-arginine / thyroid hormone transmembrane transporter activity / Defective SLC7A7 causes lysinuric protein intolerance (LPI) / neutral L-amino acid secondary active transmembrane transporter activity / apical pole of neuron / amino acid import across plasma membrane / aromatic amino acid transmembrane transporter activity / tyrosine transport / L-histidine transport / amino acid transport complex / L-leucine import across plasma membrane / L-alanine transmembrane transporter activity / L-alanine import across plasma membrane / isoleucine transport / phenylalanine transport / methionine transport / L-amino acid transmembrane transporter activity / valine transport / L-leucine transmembrane transporter activity / calcium:sodium antiporter activity / L-leucine transport / thyroid hormone transport / proline transport / positive regulation of cytokine production involved in immune response / amino acid transmembrane transport / negative regulation of vascular associated smooth muscle cell apoptotic process / neutral amino acid transport / amino acid transmembrane transporter activity / external side of apical plasma membrane / Amino acid transport across the plasma membrane / neutral L-amino acid transmembrane transporter activity / Tryptophan catabolism / exogenous protein binding / anchoring junction / response to muscle activity / antiporter activity / Basigin interactions / xenobiotic transport / microvillus membrane / amino acid transport / positive regulation of interleukin-4 production / response to exogenous dsRNA / positive regulation of interleukin-17 production / tryptophan transport / transport across blood-brain barrier / response to hyperoxia / cellular response to glucose starvation / positive regulation of glial cell proliferation / negative regulation of autophagy / basal plasma membrane / liver regeneration / positive regulation of type II interferon production / peptide antigen binding / calcium ion transport / double-stranded RNA binding / melanosome / virus receptor activity / cellular response to lipopolysaccharide / basolateral plasma membrane / carbohydrate metabolic process / cadherin binding / symbiont entry into host cell / protein heterodimerization activity / apical plasma membrane / lysosomal membrane / negative regulation of gene expression / intracellular membrane-bounded organelle / synapse / cell surface / protein homodimerization activity / RNA binding / extracellular exosome / nucleoplasm / membrane / plasma membrane / cytosol 類似検索 - 分子機能 | ||||||||||||
生物種 | Homo sapiens (ヒト) | ||||||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.8 Å | ||||||||||||
データ登録者 | Yan RH / Li YN / Zhang YY / Zhong XY / Zhou Q | ||||||||||||
資金援助 | 中国, 3件
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引用 | ジャーナル: Cell Discov / 年: 2021 タイトル: Mechanism of substrate transport and inhibition of the human LAT1-4F2hc amino acid transporter. 著者: Renhong Yan / Yaning Li / Jennifer Müller / Yuanyuan Zhang / Simon Singer / Lu Xia / Xinyue Zhong / Jürg Gertsch / Karl-Heinz Altmann / Qiang Zhou / 要旨: LAT1 (SLC7A5) is one of the representative light chain proteins of heteromeric amino acid transporters, forming a heterodimer with its heavy chain partner 4F2hc (SLC3A2). LAT1 is overexpressed in ...LAT1 (SLC7A5) is one of the representative light chain proteins of heteromeric amino acid transporters, forming a heterodimer with its heavy chain partner 4F2hc (SLC3A2). LAT1 is overexpressed in many types of tumors and mediates the transfer of drugs and hormones across the blood-brain barrier. Thus, LAT1 is considered as a drug target for cancer treatment and may be exploited for drug delivery into the brain. Here, we synthesized three potent inhibitors of human LAT1, which inhibit transport of leucine with IC values between 100 and 250 nM, and solved the cryo-EM structures of the corresponding LAT1-4F2hc complexes with these inhibitors bound at resolution of up to 2.7 or 2.8 Å. The protein assumes an outward-facing occluded conformation, with the inhibitors bound in the classical substrate binding pocket, but with their tails wedged between the substrate binding site and TM10 of LAT1. We also solved the complex structure of LAT1-4F2hc with 3,5-diiodo-L-tyrosine (Diiodo-Tyr) at 3.4 Å overall resolution, which revealed a different inhibition mechanism and might represent an intermediate conformation between the outward-facing occluded state mentioned above and the outward-open state. To our knowledge, this is the first time that the outward-facing conformation is revealed for the HAT family. Our results unveil more important insights into the working mechanisms of HATs and provide a structural basis for future drug design. | ||||||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_30840.map.gz | 59.8 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-30840-v30.xml emd-30840.xml | 9.3 KB 9.3 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_30840.png | 28.3 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-30840 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30840 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_30840_validation.pdf.gz | 485.2 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_30840_full_validation.pdf.gz | 484.8 KB | 表示 | |
XML形式データ | emd_30840_validation.xml.gz | 6 KB | 表示 | |
CIF形式データ | emd_30840_validation.cif.gz | 6.8 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30840 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30840 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_30840.map.gz / 形式: CCP4 / 大きさ: 64 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | cryo EM map of the LAT1-4F2hc bound with JX-119, focused refined on transmembrane region | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.087 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
-全体 : cryo EM map of the LAT1-4F2hc bound with JX-119, focused refined ...
全体 | 名称: cryo EM map of the LAT1-4F2hc bound with JX-119, focused refined on transmembrane region |
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要素 |
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-超分子 #1: cryo EM map of the LAT1-4F2hc bound with JX-119, focused refined ...
超分子 | 名称: cryo EM map of the LAT1-4F2hc bound with JX-119, focused refined on transmembrane region タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
組換発現 | 生物種: Homo sapiens (ヒト) |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 8 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 2.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 3.0.6) / 使用した粒子像数: 314179 |
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初期 角度割当 | タイプ: ANGULAR RECONSTITUTION |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |