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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: 9cax | ||||||||||||||||||||||||||||||
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タイトル | Structure of human SLC2A9 transporter | ||||||||||||||||||||||||||||||
![]() | Soluble cytochrome b562,Solute carrier family 2, facilitated glucose transporter member 9 | ||||||||||||||||||||||||||||||
![]() | MEMBRANE PROTEIN / Transporter | ||||||||||||||||||||||||||||||
機能・相同性 | ![]() Defective SLC2A9 causes hypouricemia renal 2 (RHUC2) / fructose transmembrane transporter activity / fructose transmembrane transport / dehydroascorbic acid transport / hexose transmembrane transport / carbohydrate:proton symporter activity / Cellular hexose transport / D-glucose transmembrane transporter activity / D-glucose transmembrane transport / urate transport ...Defective SLC2A9 causes hypouricemia renal 2 (RHUC2) / fructose transmembrane transporter activity / fructose transmembrane transport / dehydroascorbic acid transport / hexose transmembrane transport / carbohydrate:proton symporter activity / Cellular hexose transport / D-glucose transmembrane transporter activity / D-glucose transmembrane transport / urate transport / urate metabolic process / urate transmembrane transporter activity / D-glucose import / transmembrane transporter activity / electron transport chain / basolateral plasma membrane / periplasmic space / electron transfer activity / apical plasma membrane / iron ion binding / heme 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: 3.37 Å | ||||||||||||||||||||||||||||||
![]() | Khandelwal, N.K. / Gupta, M. / Stroud, R.M. | ||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of disease mutation and substrate recognition by the human SLC2A9 transporter. 著者: Nitesh Kumar Khandelwal / Meghna Gupta / Paras Kumar / Sree Ganesh Balasubramani / Ignacia Echeverria / Robert M Stroud / ![]() 要旨: Urate provides ~50% of the reducing potential in human and primate plasma which is key to detoxifying reactive oxygen by-products of cellular metabolism. Urate is the endpoint of purine metabolism in ...Urate provides ~50% of the reducing potential in human and primate plasma which is key to detoxifying reactive oxygen by-products of cellular metabolism. Urate is the endpoint of purine metabolism in primates, and its concentration in plasma is a balance between excretion from kidney and intestine, and subsequent reabsorption in and through cells of kidney proximal tubules to maintain a regulated concentration in plasma. SLC2A9 is the primary transporter that returns urate from the basolateral side of kidney tubule cells back to plasma. A shorter splice variant of SLC2A9 is directed to the apical surface where several transporters recapture urate from the tubule back into cells. Too high a concentration in plasma causes hyperuricemia, is linked to gout, and favors kidney stone formation. To understand the molecular basis of uric acid transport and the role of disease-causing mutations in SLC2A9, we determined structures of human SLC2A9 in its apo form, and its urate-bound form by cryo-EM, at resolution of 3.3 Å and 4.1 Å respectively. Both structures are captured in an inward open conformation. Using the inward-facing structure as a template we modeled the outward-facing conformation to understand the alternating access mechanism. Alternative salt bridge pairs on the cytoplasmic side suggest a mechanism that can balance the energetics of the inward open and outward open states. The location of disease-causing mutants suggests their role in impacting function. Our structures elucidate the molecular basis for urate selectivity and transport and provide a platform for future structure-based drug discovery aimed at reducing plasma urate levels in diseases of hyperuricemia and gout. | ||||||||||||||||||||||||||||||
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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 | ![]() | 105.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 76.5 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 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 33.4 KB | 表示 | |
CIF形式データ | ![]() | 47.2 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 | ![]() 45406MC ![]() 9cbbC 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: 69859.695 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag,N-terminal Flag ...詳細: N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag,N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag,N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag,N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag,N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag,N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag,N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag,N-terminal Flag tag, HRV3C site followed by BRIL tag N-terminal truncated SlC2A9 isoform 1 (residue 52-540 as per uniprot). C terminal thrombin site followed by 10X his tag 由来: (組換発現) ![]() ![]() ![]() |
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Has protein modification | N |
-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: Codon optimize SLC2A9 gene was synthesize and cloned in 83 nu yeast expressing vector from GenScript. Protein expressed in yeast cells and purified using Ni-affinity followed by Sizing. タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | |||||||||||||||
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分子量 | 値: 0.06978906 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 詳細: 4 degree cold buffer pH7.5 (300mM NaCl, 50mM Tris and 0.02% GDN) | |||||||||||||||
緩衝液成分 |
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試料 | 濃度: 7 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||
試料支持 | 詳細: 30 second glow 30 sec hold / 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 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: OTHER / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm |
試料ホルダ | 凍結剤: NITROGEN |
撮影 | 平均露光時間: 2 sec. / 電子線照射量: 47.7 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 1 / 実像数: 10503 |
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解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 9590974 | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.37 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 154457 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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