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基本情報
登録情報 | データベース: PDB / ID: 9f6o | |||||||||
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タイトル | Human divalent metal transporter 1 (DMT1/SLC11A2) in complex with sybody 1, in an occluded state | |||||||||
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![]() | TRANSPORT PROTEIN / Iron transport / Manganese transport / Transition metal transport / Divalent metal transport / Metal transport / Transporter / Membrane protein / SLC / Iron uptake / Iron homeostasis / LeuT fold / Small membrane protein | |||||||||
機能・相同性 | ![]() vanadium ion transmembrane transporter activity / vanadium ion transport / paraferritin complex / Defective SLC11A2 causes hypochromic microcytic anemia, with iron overload 1 (AHMIO1) / lead ion transmembrane transporter activity / lead ion transport / nickel cation transmembrane transporter activity / transition metal ion transmembrane transporter activity / solute:proton symporter activity / inorganic cation transmembrane transporter activity ...vanadium ion transmembrane transporter activity / vanadium ion transport / paraferritin complex / Defective SLC11A2 causes hypochromic microcytic anemia, with iron overload 1 (AHMIO1) / lead ion transmembrane transporter activity / lead ion transport / nickel cation transmembrane transporter activity / transition metal ion transmembrane transporter activity / solute:proton symporter activity / inorganic cation transmembrane transporter activity / cadmium ion transmembrane transport / Metal ion SLC transporters / manganese ion transport / nickel cation transport / detection of oxygen / cadmium ion transmembrane transporter activity / manganese ion transmembrane transporter activity / iron import into cell / copper ion transmembrane transporter activity / cobalt ion transport / cobalt ion transmembrane transporter activity / retromer complex binding / ferrous iron transmembrane transporter activity / iron ion transmembrane transporter activity / zinc ion transmembrane transporter activity / iron ion transmembrane transport / copper ion transport / basal part of cell / vacuole / response to iron ion / heme biosynthetic process / dendrite morphogenesis / cadmium ion binding / erythrocyte development / trans-Golgi network / Iron uptake and transport / brush border membrane / recycling endosome / multicellular organismal-level iron ion homeostasis / recycling endosome membrane / late endosome membrane / apical part of cell / late endosome / extracellular vesicle / iron ion transport / cellular response to oxidative stress / early endosome membrane / cytoplasmic vesicle / mitochondrial outer membrane / intracellular iron ion homeostasis / learning or memory / early endosome / response to hypoxia / lysosome / endosome membrane / apical plasma membrane / lysosomal membrane / perinuclear region of cytoplasm / cell surface / Golgi apparatus / mitochondrion / nucleus / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | ![]() synthetic construct (人工物) | |||||||||
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: 3.9 Å | |||||||||
![]() | Liziczai, M. / Dutzler, R. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for metal ion transport by the human SLC11 proteins DMT1 and NRAMP1. 著者: Márton Liziczai / Ariane Fuchs / Cristina Manatschal / Raimund Dutzler / ![]() 要旨: Iron and manganese are essential nutrients whose transport across membranes is catalyzed by members of the SLC11 family. In humans, this protein family contains two paralogs, the ubiquitously ...Iron and manganese are essential nutrients whose transport across membranes is catalyzed by members of the SLC11 family. In humans, this protein family contains two paralogs, the ubiquitously expressed DMT1, which is involved in the uptake and distribution of Fe and Mn, and NRAMP1, which participates in the resistance against infections and nutrient recycling. Despite previous studies contributing to our mechanistic understanding of the family, the structures of human SLC11 proteins and their relationship to functional properties have remained elusive. Here we describe the cryo-electron microscopy structures of DMT1 and NRAMP1 and relate them to their functional properties. We show that both proteins catalyze selective metal ion transport coupled to the symport of H, but additionally also mediate uncoupled H flux. Their structures, while sharing general properties with known prokaryotic homologs, display distinct features that lead to stronger transition metal ion selectivity. | |||||||||
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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 | ![]() | 118.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 86.4 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
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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: 71938.180 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#2: 抗体 | 分子量: 16414.086 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() |
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 DMT1 and Sybody 1 / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 値: 80.7 kDa/nm / 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.4 |
試料 | 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: 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-PROPANE / 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: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 130000 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): 1000 nm / C2レンズ絞り径: 50 µm |
試料ホルダ | 凍結剤: NITROGEN |
撮影 | 電子線照射量: 61.76 e/Å2 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 |
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解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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3次元再構成 | 解像度: 3.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 72182 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 最高解像度: 3.9 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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