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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: 9bux | ||||||
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タイトル | Structure of GGCX-BGP-menaquinone-4 epoxide complex | ||||||
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![]() | MEMBRANE PROTEIN / LYASE/SUBSTRATE / vitamin K cycle / LYASE-SUBSTRATE complex | ||||||
機能・相同性 | ![]() structural constituent of bone / hydroxyapatite binding / peptidyl-glutamate 4-carboxylase / gamma-glutamyl carboxylase activity / negative regulation of bone development / response to macrophage colony-stimulating factor / Defective gamma-carboxylation of F9 / vitamin binding / vitamin K metabolic process / regulation of testosterone biosynthetic process ...structural constituent of bone / hydroxyapatite binding / peptidyl-glutamate 4-carboxylase / gamma-glutamyl carboxylase activity / negative regulation of bone development / response to macrophage colony-stimulating factor / Defective gamma-carboxylation of F9 / vitamin binding / vitamin K metabolic process / regulation of testosterone biosynthetic process / response to gravity / response to vitamin K / regulation of osteoclast differentiation / cellular response to zinc ion starvation / type B pancreatic cell proliferation / cellular response to vitamin D / regulation of bone mineralization / response to vitamin D / regulation of bone resorption / osteoblast development / response to hydroxyisoflavone / positive regulation of neurotransmitter secretion / response to zinc ion / bone mineralization / RUNX2 regulates osteoblast differentiation / response to testosterone / Transport of gamma-carboxylated protein precursors from the endoplasmic reticulum to the Golgi apparatus / Gamma-carboxylation of protein precursors / Removal of aminoterminal propeptides from gamma-carboxylated proteins / response to glucocorticoid / response to mechanical stimulus / regulation of cellular response to insulin stimulus / protein maturation / response to activity / skeletal system development / stem cell differentiation / brain development / cellular response to growth factor stimulus / protein modification process / hormone activity / bone development / Golgi lumen / cognition / cellular response to insulin stimulus / response to estrogen / osteoblast differentiation / blood coagulation / glucose homeostasis / vesicle / perikaryon / response to ethanol / learning or memory / cell adhesion / endoplasmic reticulum lumen / response to xenobiotic stimulus / dendrite / calcium ion binding / endoplasmic reticulum membrane / structural molecule activity / extracellular space / extracellular region / membrane / cytoplasm 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: 3.06 Å | ||||||
![]() | Wang, R. / Qi, X. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure and mechanism of vitamin-K-dependent γ-glutamyl carboxylase. 著者: Rong Wang / Baozhi Chen / Nadia Elghobashi-Meinhardt / Jian-Ke Tie / Alyssa Ayala / Ning Zhou / Xiaofeng Qi / ![]() ![]() 要旨: γ-Glutamyl carboxylase (GGCX) is the sole identified enzyme that uses vitamin K (VK) as a cofactor in humans. This protein catalyses the oxidation of VK hydroquinone to convert specific glutamate ...γ-Glutamyl carboxylase (GGCX) is the sole identified enzyme that uses vitamin K (VK) as a cofactor in humans. This protein catalyses the oxidation of VK hydroquinone to convert specific glutamate residues to γ-carboxyglutamate residues in VK-dependent proteins (VDPs), which are involved in various essential biological processes and diseases. However, the working mechanism of GGCX remains unclear. Here we report three cryogenic electron microscopy structures of human GGCX: in the apo state, bound to osteocalcin (a VDP) and bound to VK. The propeptide of the VDP binds to the lumenal domain of GGCX, which stabilizes transmembrane helices 6 and 7 of GGCX to create the VK-binding pocket. After binding of VK, residue Lys218 in GGCX mediates the oxidation of VK hydroxyquinone, which leads to the deprotonation of glutamate residues and the construction of γ-carboxyglutamate residues. Our structural observations and results from binding and cell biological assays and molecular dynamics simulations show that a cholesterol molecule interacts with the transmembrane helices of GGCX to regulate its protein levels in cells. Together, these results establish a link between cholesterol metabolism and VK-dependent pathways. | ||||||
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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ダウンロード
PDBx/mmCIF形式 | ![]() | 147.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 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
関連構造データ | ![]() 44924MC ![]() 9bumC ![]() 9burC ![]() 44923 C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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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
-タンパク質 , 2種, 2分子 AB
#1: タンパク質 | 分子量: 88652.609 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: タンパク質 | 分子量: 11804.439 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
-糖 , 2種, 3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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#4: 糖 |
-非ポリマー , 3種, 3分子 


#5: 化合物 | ChemComp-CLR / |
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#6: 化合物 | ChemComp-POV / ( |
#7: 化合物 | ChemComp-A1AT1 / ( 分子量: 460.648 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C31H40O3 |
-詳細
研究の焦点であるリガンドがあるか | N |
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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: GGCX-BGP-menaquinone-4 epoxide complex / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7.5 |
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 |
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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 / 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 |
撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
CTF補正 | タイプ: NONE |
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3次元再構成 | 解像度: 3.06 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 195408 / 対称性のタイプ: POINT |