+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7dsq | ||||||||||||
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タイトル | Overall structure of the LAT1-4F2hc bound with 3,5-diiodo-L-tyrosine | ||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / LAT1-4F2hc | ||||||||||||
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 / Basigin interactions / antiporter activity / 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 | 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: 3.4 Å | ||||||||||||
データ登録者 | Yan, R.H. / Li, Y.N. / Zhang, Y.Y. / Zhong, X.Y. / 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 | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7dsq.cif.gz | 180.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7dsq.ent.gz | 141.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7dsq.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7dsq_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7dsq_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 7dsq_validation.xml.gz | 34 KB | 表示 | |
CIF形式データ | 7dsq_validation.cif.gz | 49.8 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ds/7dsq ftp://data.pdbj.org/pub/pdb/validation_reports/ds/7dsq | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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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: 70160.828 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: SLC3A2, hCG_2016598 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: J3KPF3 |
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#2: タンパク質 | 分子量: 57186.895 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: SLC7A5, CD98LC, LAT1, MPE16 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q01650 |
-糖 , 1種, 4分子
#3: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
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-非ポリマー , 4種, 19分子
#4: 化合物 | ChemComp-TYI / | ||||
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#5: 化合物 | #6: 化合物 | ChemComp-3PH / | #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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-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 |
-試料調製
構成要素 | 名称: LAT1-4F2hc bound with 3,5-diiodo-L-tyrosine / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 8 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 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 | 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) |
-解析
EMソフトウェア | 名称: RELION / バージョン: 3.0.6 / カテゴリ: 3次元再構成 |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 93151 / 対称性のタイプ: POINT |